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在非刚性地基上拱桥震害主要由两方面的原因造成:一是岸坡滑移;二是地基沉降。这里所指地基沉降除了由于液化引起承载能力下降而产生的沉降外,还包括其他原因产生的沉降,例如基础的承载能力不足等原因。兹分述如下第一节单孔拱桥一、岸坡滑移引起的震害岸坡滑移会使桥台产生大幅度的倾斜和向河心的位移,使拱产生严重震害。 (一) 冶里红旗桥,烈度9度,为37米双曲拱桥,两台为石砌U形桥台,扩大基
The damage of arch bridge on non-rigid foundation is mainly caused by two reasons: one is the bank slip; the other is the foundation settlement. Here refers to the foundation settlement not only due to liquefaction caused by the decline in bearing capacity settlement, but also includes other causes of settlement, such as the basic bearing capacity is not enough reasons. Here are the first section of a single-hole arch bridge First, the shore slip caused by landslides caused by slippery slope abutment will have a significant tilt and displacement to the river center, so that the Arch have a serious earthquake damage. (A) Yeli Hongqi Bridge, intensity of 9 degrees, 37 meters double curved arch bridge, two for the U-shaped stone bridge abutment to expand base