Cause analysis of concrete cracking of Xizhimen old bridge in Beijing

1, design and construction problems, the bridge was built in the 1970s, the design and construction technology may be different from today's standards, and it is also restricted by materials and processing, so it is difficult to ensure the strength and stability of the bridge.

2. Natural environment and climatic conditions: Beijing is located in the north, with low temperature in winter and high temperature in summer, accompanied by natural disasters such as rain and snow, which may have an impact on the bridge structure.

3, daily use and maintenance problems. Long-term traffic and heavy vehicles will bring great load to the bridge. If the bridge maintenance is not timely or improper, the structural problems will be further aggravated.