Construction investigation report

In daily life and work, reports are used more and more, and reports are written afterwards. How should we write the report? The following is the construction survey report I collected, which is for reference only. I hope it will help you.

Construction Survey Report 1 1. General situation of the project:

This project is the 3# high-rise of Hanyuan Road Residential Quarter of West Railway, which is located in the courtyard of the material supply section of Hanyuan Road West Railway in Xi City. The construction area of this project is 4 1141.47m2, with 34 floors above ground and1floor underground, and the building height is 99.1m. The main structure is shear wall structure and the foundation is raft foundation. The construction period is 20xx August 1 to 20xx September 20th, and the construction period is 750 days.

Second, the construction survey:

1, site and environment

The north of the project site is close to Hanyuan Road, with convenient transportation but strict traffic control. The main materials can only enter the site at night, and the concrete truck can enter the site at any time except from 5 pm to 8 pm. There are villages, markets and railway workers' buildings around the construction site, and personnel activities are complex, which brings certain difficulties to site management. Measures should be taken to strengthen site management to prevent disturbing people. The construction site is relatively narrow. The building is 8- 18 meters away from the south wall of the site, 5 meters away from the north wall and 45 meters away from the existing fence on the east side, which can basically meet the needs of production and life.

2. Geological and hydrological conditions

The terrain of the site is slightly undulating, the original ground elevation is between 0.2m and 0.6m, and the site belongs to slightly collapsible loess. The annual groundwater level is between -9.2 and -9.9 meters. The construction site is located in the courtyard of the west railway material supply section, and there are several drainage wells in the courtyard to facilitate drainage.

3. Meteorology

The rainy season in this area is August, September and 65438+1October every year.

Step 4 transport

It is adjacent to Hanyuan Road in the north, with convenient transportation and direct access to the construction site.

5. Water and electricity

There is a domestic water supply pipeline on the north side of the project site, which is very convenient for construction. There is a power distribution room in the northwest corner of the site, which provides 630kva capacity, which can meet the needs of production and life and is more convenient to use electricity.

Step 6 communicate

Construction management personnel are equipped with mobile phones, and the office is equipped with a landline.

7. Material supply

This project is close to Daming Palace building materials market and North Third Ring Road building materials market, and the material procurement is relatively convenient. Commercial concrete for concrete. The commercial concrete station is about 10 km away from the construction site, and the supply of commercial concrete is sufficient.

8, temporary works

Temporary housing can be built on the east side of the site, and there is an open space of about 35 -40 meters on the east side of the site, which fully meets the needs of life.

9. Environment and health

Because this project is located in a residential area, it requires high environmental protection, and the construction site should be fenced to reduce noise, especially during the college entrance examination in July. Construction at night is prohibited. No construction waste shall be left after the construction. Vehicles entering and leaving the site must be washed before they can get on the road, so washing equipment must be set at the entrance of the site.

Third, the construction organization opinion:

1, construction site layout

The whole site is enclosed by colored steel, with a height of1.8m. The south side of the site is a production area, and the main layout is steel processing shed, raw material stacking area and finished product stacking area. The woodworking site is arranged next to the reinforcement area, and the turnover material stacking area is arranged next to the woodworking area. The east-west construction main road is located on the south side of the site, and the hydropower material warehouse and processing area are located at the west end of the construction main road. The main power distribution room of the site is located in the northeast corner of the site.

Step 2 precipitate

Due to the low local groundwater level, which is 9.2 ~ 9.9 meters below the ground on average, the elevation of the basement of this project is 6.7 meters below the ground, regardless of foundation pit precipitation.

3. Slope protection

The foundation pit wall has been supported by shotcrete and anchor, but there are still some foundation pits that are not excavated in place, so it is necessary to excavate the foundation pit with inadequate size, and the exposed soil after excavation should be covered with plastic sheets to prevent rain erosion.

4. Labor force

The labor force chooses Henan Anyang Labor Service Company.

According to the actual construction situation, it can be divided into the following teams: carpentry, reinforcement, concrete, scaffolder and plumber.

Construction Survey Report 2 After the establishment of the project management department of China Railway Second Bureau Electric Company, our unit quickly organized personnel to enter the site, completed the construction of the project site with the fastest speed, organized the blue prints.the design, and organized project technicians to carry out detailed construction survey on the construction site, and formed the following report:

I. Overview of the Project

1, engineering overview

Daxing-Sinan Expressway is an important part of Hangrui Expressway in Guizhou Province (M56 12 Line). The total length of Hangrui Expressway in Guizhou Province is about 6 15km. This project starts from Fenghuang to Daxing section of Hangrui Expressway, passes through East Sichuan, Tongren, Ba Huang and Jiangkou, and ends in Fanjing, with a mileage of K0+000 ~ K84+600. This bid section is responsible for the system establishment, equipment installation and debugging of road monitoring system, communication system and toll collection system. This bid section includes six interchanges, six toll stations, two service areas, two parking areas, a monitoring sub-center, a communication sub-center and a charging sub-center. The contract duration of this tender is 15 1 day, the planned commencement date is 16 September 20xx, and the completion date is 15 February 20xx.

2. System composition and engineering quantity statistics

Our company undertakes the road communication system, monitoring system and charging system of this contract section. The monitoring system consists of Guizhou Monitoring Center-Tongren Monitoring Sub-center-monitoring field equipment (Guizhou Monitoring Center is not included in the design scope). The field equipment mainly includes 6 sets of microwave vehicle detectors, 1 1 set of field cameras, 13 sets of cantilever variable information signs, 3 sets of portal variable information signs, 1 set of meteorological detectors and LED electronics. The communication system consists of Guizhou Toll Center-Tongren Toll Sub-center-unmanned toll station and other equipment (Guizhou Monitoring Center is not included in this design). Communication stations include Tongren East Communication Station, Provincial Unmanned Communication Station, Daxing Unmanned Communication Station, Dababan Unmanned Communication Station, Jiangkou Unmanned Communication Station and Fanjingshan Unmanned Communication Station. The whole line is equipped with program-controlled switches, differential multiplexers (ADM) and optical line terminals (OLT). The charging management system of the charging system adopts three levels of management: provincial charging center (not included in this design scope), charging sub-center and toll station. There are 6 toll stations in this contract section, including provincial boundary toll station, Daxing toll station, Tongren East toll station, Dababan toll station, Jiangkou toll station and Fanjingshan toll station. There are 45 mechanical and electrical equipment lanes and 46 civil construction lanes. The toll collection system is mainly composed of toll collection computer system, closed-circuit television monitoring system, intercom system, emergency alarm system and toll collection system by weight.

Second, topography and hydrometeorology.

1, landform

This project is located in the slope zone from Yunnan-Guizhou Plateau to Xiangxi Mountain, with high terrain in the northwest and low terrain in the southeast, with an average elevation of 500- 1000 meters. The whole territory is dominated by mountains, accounting for 67.8% of the total area, followed by hills, accounting for 28.3%, and bazi and other landforms only account for 3.9%. The old road (provincial highway 305) in this area passes through mountainous and hilly areas, and the road topography fluctuates greatly. The route is basically located halfway up the mountain, and the road conditions of construction units such as civil works and tunnels in the early stage are poor.

2.[ Meteorology] [Hydrology] Hydrometeorology

This project is located in tongren city. Tongren city belongs to the subtropical humid climate zone, and its climate is obviously influenced by monsoon. Its basic climatic characteristics are as follows: the temperature is changeable and there is more rain in spring; Summer is hot and sunny; Autumn temperature drops rapidly, cloudy and rainy; Less cold in winter and long frost-free period; The annual average temperature is about 18℃, the highest in Leng Yue is 1 month, the average temperature is 2 ~ 6℃, and the hottest month is July, the average temperature is 24 ~ 28℃. Under the same height contrast, the temperature in the west is higher than that in the east; China has abundant rainfall, with an average annual rainfall of11400 mm, which is concentrated from April to August, accounting for 60% ~ 65% of the annual rainfall, and the annual sunshine hours 1250 hours.

Three. Building and living conditions

1. The bid section of our unit is mainly located in the mountainous area, with few access roads. Provincial Highway 305 is mainly used during the construction period. The highway crosses the mountainous area and is built along the foot of the mountain. The route is basically the same as that of the fourth expressway under construction.

2. There is a river on the mountain of the construction site, so it is convenient to take water. Construction personnel should enhance environmental awareness to prevent environmental pollution. Some civil engineering, housing construction and tunnel units have not been evacuated, so it is convenient to get electricity. In addition, in order to facilitate the construction and emergency needs, our unit will also be equipped with 2 ~ 3 generators.

3. The project is located in the mountainous area of northeast Guizhou, where the economy is relatively backward, the price is relatively cheap, and it is easier to hire labor. Towns along the project are evenly distributed, making it easier to purchase and transport self-purchased materials.

4. Living conditions: Combined with the actual distribution of the project, in order to ensure the convenience of coordination, command and construction, the project management department is located in Shenjia Village, Xieqiao Town, tongren city suburb. The construction site is about 2 kilometers away from the urban center, which is very convenient for daily life and office procurement. There are Tongren City Hospital, tongren city Second People's Hospital, tongren city Hospital of Traditional Chinese Medicine and other large hospitals with advanced medical equipment and complete facilities. Tap water is used in the station and electricity is used by residents. The load can meet the office needs of the project department.

Tongren is a multi-ethnic community, inhabited by Tujia, Miao, Dong, Gelao, Manchu and other ethnic minorities. Tujia Spring Festival, lanterns, tea lanterns, dragon lanterns, playing with money poles, walking on stilts and other folk dance performances are colorful. In Tongren area, there are no lights, no knives, no splashing water and no loud noises during the New Year, and the whole family get together to eat fresh vegetables and overnight meals. However, the Miao people have the custom of going up the mountain to get rid of fire. In the construction process and daily life, fully respecting the customs and habits of ethnic minorities, such as clothing, diet, marriage, etiquette, funeral, etc., is the key to harmonious coexistence with local residents and ethnic minorities.

Four, engineering interface (civil engineering, housing construction)

The pavement of Daxing Interchange, Jiangkou Interchange and Fanjingshan Phase I has just been formed, and the silicon core pipe is embedded, and the steel pipe is embedded, and the hand well has not started; The second layer of cement pavement is being laid at the dam-slab interchange, the guardrail steel bars are being bound on the upper deck of the interchange, the silicon core pipes and steel pipes are embedded, and the hand well has not started; The pavement of Tongren West Interchange has been initially formed, but the embedding of silicon core pipe, steel pipe and manhole has not started, and the subgrade of Tongren East Interchange is still soil pavement. Pavement filling is under way in Xiangyang service area, Tongren service area, Ba Huang parking area and Miaokuang parking area, with silicon core pipes embedded and steel pipes embedded, instead of manhole; The foundation pavement of the provincial toll station has been formed and is being used as the foundation of the toll station building. The steel-plastic composite pressure pipe crossing the road here has been embedded, and the silicon core pipe and steel pipe are not embedded, so the hand well is under construction. Related interfaces such as Fanjingshan Toll Station, Jiangkou Toll Station, Bapan Toll Station, Tongren East Toll Station, Daxing Toll Station, and housing construction have not yet been formed, and supporting facilities such as hand wells and embedded pipelines have not yet been presented.

Five, key and difficult project construction suggestions

All projects undertaken by the project management department will be organized in an orderly manner as planned, and all construction links in the project will be effectively controlled to fully ensure the smooth completion of quality objectives and progress indicators.

1, key points of optical cable installation project

A, first prepare the laying plan, list the optical cables, and prepare the necessary machines and materials, such as suspension, crane, marking, etc. When laying cables on vertical bridge, scaffolding should be set up and communication tools should be equipped.

B, according to the cable weight, length, direction to determine the construction personnel and machines, unified command when laying, to ensure construction safety. When laying optical cables in the same bridge, it will follow the order of lower layer first, upper layer first, inner layer first and outer layer first, and proceed in an orderly manner to avoid cable winding and wrong holes.

C, when laying optical cable, prepare and hang the label card in time. The arrangement of optical cables should be horizontal, flat and vertical, with the same outgoing direction and allowance and the same spacing, so that the optical cables can be arranged neatly and beautifully and easily maintained.

D, when laying optical cable, there will be a certain margin, and the length of the margin will be specified in the specification, and the wire will be marked.

The minimum bending radius of optical cable conforms to the specification, and intermediate joints should be avoided as far as possible in optical cable control.

2. Key points of communication power supply system construction

The construction contents and sequence are as follows:

A. Before installation, the incoming goods shall be inspected and accepted. The packaging shall be complete, the appearance shall be undamaged, the paint surface shall be undamaged, and the equipment frame and panel shall be free from deformation and bruise.

B, the battery voltage should be around 12.3V, and the deviation between each cell should be within 0.5V.

C, before installation, the equipment should be cleaned. The distance from the wall should not be less than 20 cm, otherwise the maintenance will not be affected. The equipment shall have sufficient operating space for maintenance and operation, and the equipment door shall be completely opened and closed.

D. Anti-static measures should be taken for the computer room without anti-static facilities to ensure safe grounding. And dig cable trench or cable trough on the ground.

E, rows of equipment installation should ensure that the panel in a line. Ensure that the deepest equipment has enough operating space. F, the battery should be installed in a well-ventilated special battery cabinet or battery rack, and ensure the stability of the battery pack, single equipment and group equipment should ensure good grounding.

3, variable information sign installation project construction essentials

A, understand the road and traffic conditions, determine the specific construction scheme (cargo transportation routes, construction schedule, etc. )

B. Check that external conditions such as power supply, communication and infrastructure are in place.

C, gantry and variable information sign column and plate hoisting should be well prepared in advance, including electro-oxygen welding equipment, various fasteners installation size tolerance matching detection, etc. To ensure a successful promotion.

D, variable information board hoisting usually needs to occupy two lanes, and the road surface will be fully sealed or semi-sealed according to the specific situation. If necessary, it is also implemented at night.

E, electrical debugging, including internal electrical wiring of variable information signs, wiring and wiring of power lines and communication lines, until the self-inspection shows success.

F, system alignment. First of all, joint debugging is carried out on the spot through the notebook computer. On this basis, the computer-controlled joint debugging of the remote monitoring center is carried out.

4, monitoring equipment foundation construction essentials

A, discuss the size, fixing method and technical requirements of foundation flange in detail, make detailed foundation construction drawing and report it to the supervision engineer for approval. B, along the road foundation installation position.

6 international inspection, and verify the possible problems in construction and whether they can meet the design requirements. Consult with the supervision engineer and system engineer in time when encountering problems, and then decide the solution. C. Make a camera foundation first, and then check it by quality engineer and supervision engineer, with emphasis on installation size and external wind resistance. After inspection, the following foundation construction can be carried out. D, the construction should be carried out in strict accordance with the national concrete construction standards and acceptance specifications, with emphasis on reinforcement embedding and concrete pouring methods.

5. Coordination between toll plaza equipment and civil engineering

In the cooperation between the equipment in the toll plaza and the civil engineering, we try our best to obtain the detailed information of the equipment foundation and flange before the equipment purchase, so as to ensure the smooth installation of the equipment after it enters the site. For the relatively lagging civil interface, our equipment was ordered before the civil construction, and our on-site project manager will strengthen the coordination with the civil construction party to ensure the smooth installation of the equipment after it enters the site. Before the equipment installation, our company will send the on-site project manager to coordinate with the owner and relevant construction units to ensure the correct connection with other engineering interfaces.

6, charging system equipment debugging

For some projects, due to the tight construction period, we can't debug all the equipment in the company one by one and adjust the system together, so there will be some problems when installing some equipment. In order to solve this problem, we first take measures at the source and choose equipment suppliers with mature technology and strong technical support ability. In addition, the installation engineers we sent to the site are very familiar with the equipment they are responsible for and have excellent skills to ensure the smooth installation of the equipment.

7, charging system software debugging

The software part of expressway is a complex system, involving multiple peripheral devices. In most cases, it is also charged together with other road sections and even the whole province. All these increase the difficulty of software testing. First, we tested the simulation environment in the company and found most problems. Thirdly, before opening to traffic, arrange time for system debugging as much as possible to minimize possible problems after opening to traffic. In short, we will take various measures to ensure the realization of software functions.

8. Distribution of optical cables

The accuracy of optical cable distribution will directly affect the smooth progress of construction and construction cost. Therefore, improving the accuracy of optical cable distribution will speed up the construction progress and reduce the construction cost. In order to correctly distribute optical fibers, the corresponding solutions are as follows:

A, carefully check the accuracy of communication pipeline project completion data; B, communication pipeline engineering data have problems need field investigation;

7c。 Reasonable errors should be considered and appropriate disc length should be reserved for disc matching.

9. Connection quality of backbone optical cable

The connection quality of optical cable directly affects the signal transmission quality, and brings a series of problems such as error code and clock accuracy to SDH equipment. Therefore, the connection quality of the main optical cable must be guaranteed, and the corresponding solutions are as follows:

A, the test before the optical cable comes into play;

B, when welding, control the maximum loss of melting point, if it exceeds the standard value, rework and re-weld; C, fiber cores in the optical cable connector box are arranged neatly, fixed reliably, and the bending radius conforms to the standard value; D, after the completion of cable welding, use OTDR for testing, and rework as soon as possible if there is any welding quality problem.

Technical aspects and drawing problems of intransitive verbs

1. The number of video distributors in chapter 900- 1 of the monitoring system drawing (S7-2-2) and the list is 1 (1 in 3 out). Since there are 1 1 omnidirectional cameras on the road, do you want to increase the number of corresponding video distributors according to the system requirements?

2. There are 1 sets of server operating system software in the bill of quantities, and 3 sets in chapter 900th-1(S7-2-6) of the monitoring system drawing.

3. There are 7 sets of client operating system software in the bill of quantities, and 9 sets in chapter 900- 1 of the monitoring system drawing (S7-2- 10). Do you want to add the bill of quantities?

4. The number of fire alarm workstations in the bill of quantities is 0, and the number of monitoring system drawings in Chapter 900- 1 (S7-2-6, S7-2- 17) is 1. Is the project added to the bill of quantities?

5. The number of emergency telephone broadcasting workstation in the bill of quantities is 0, and the number of monitoring system drawing in chapter 900- 1 (S7-2-2) is 1. Is the project added to the bill of quantities?

6. The number of video transmission management servers in the bill of quantities is 0, and the number of monitoring system drawings in Chapter 900- 1 (S7-2-2) is 1. Is the project added to the bill of quantities?

7. The number of video storage servers IP-SAN in the bill of quantities is 0, and the number of monitoring system drawings in Chapter 900- 1 (S7-2-2) is 1. Is the project added to the bill of quantities?

8. Chapter 900-3 (page 5 of S7-4-4) of the toll collection system drawing shows that there are 40 groups of lighting lamps (40W energy-saving lamps) in the booth, which are not listed. Do you want to add this item to the bill of quantities?

9. Chapter 900-3 of the toll system diagram (S7-4-4, 1 page) shows that there should be 40 sets of toll lane database software, which is not in the list. Do you want to add this item to the bill of quantities?

VII. Existing Problems and Solutions

1, this bid section crosses mountainous and hilly areas, with complex terrain and more rain. Some ramps are located halfway up the mountain, and the construction units such as civil works and tunnels are all carried by heavy vehicles in the early stage, so the road surface conditions are poor. This makes the actual construction more difficult, especially the transportation of large equipment and the manufacture of equipment foundation. During the construction, we should plan the transportation and installation of equipment in advance, choose the appropriate weather, and reduce the difficulties brought by unfavorable terrain to the actual construction.

2. The communication system, monitoring system and charging system built by our company are distributed in the whole line of this bid section, with a long front and rugged construction road, which is not conducive to the mobilization of construction personnel and construction equipment. It is suggested that two or three construction teams should be selected according to local conditions and comprehensive consideration to improve construction efficiency.

3. The system interface built by our company has not been formed, and the construction conditions are not yet available. In the later construction process, actively communicate with the owner's supervisor, pay close attention to the construction progress and dynamics of the civil construction unit, and ensure the correct formation of the construction interface of our unit.

4. Donglaopo Tunnel (left tunnel L= 18 13m right tunnel L= 1836m), Baiyanpo Tunnel (left tunnel L= 1305m right tunnel L= 1230m) and Aimen 'ao Tunnel. It is suggested to add a set of high-definition cameras at each bridge head to strengthen the monitoring of vehicles on the bridge.

5. Chapter 900- 1 of the Bill of Quantities and Monitoring System Drawings: When the power supply cable of the field equipment passes through the bridge and culvert, φ 50 galvanized steel pipe is designed for protection. As the design line diameter of the field monitoring cable of the whole line includes VV22-4*35 (variable information sign at the entrance of Tongren West Interchange 1700 m) and VV22-4*25 (variable information sign at the entrance of Tongren West Interchange 1 100m), the diameter of φ 50 galvanized steel pipe is too small to meet the needs of cable threading, so it is recommended to adopt it.

6. It is understood that the silicon core pipe of the road central isolation belt is professionally constructed by the pavement (subgrade), and the construction mileage pile number of our bid section is K0+000 ~ K84+600 (Daxing main line to Fanjingshan toll station), which involves the laying of silicon core pipes in several bid sections. Can you provide the embedded schedule of silicon core pipe and steel-plastic composite pressure pipe?

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