Study on the Influence of Temperature Rise on the Stress Change of Prefabricated Cantilever Composite Subgrade (PCCS)

In this paper, a new type of precast cantilever composite foundation structure for mountainous highway is studied, and the influence of temperature rise on the stress of the structure is analyzed. Under the load of temperature rise, the stress state of the PCCS structure is significantly improved, and its value is greater than the stress of the structure under static load. The temperature load mainly has great influence on the stress state of the connecting steel bar and bolt, but has little influence on the concrete members. The stress state of the connected steel bar and bolt under the global temperature rising case has little difference with that under the local temperature rising case, while the stress state of the concrete members under the global temperature rising case is greater than that under the local temperature rising case.