【摘要】 大跨度连续刚构部分预应力混凝土桥因其主跨墩身与梁体结合部位处的构造及受力情况复杂,该处往往凭经验设计,配置较多的钢筋。为了给虎跳门大跨度连续刚构桥的方案设计提供合理的布筋依据,对其主跨墩梁结合部进行了理论计算分析和1∶10的缩尺模型试验研究,结果显示:模型试验是相当必要的,所选定的模型能较真确地模拟实桥的受力情况,模型试验实测值与理论计算值总体符合良好。更多还原

【Abstract】 Because the structural construction and stress conditions at the joint parts between the piers and girder of the main span of the longspan partially prestressed concrete continuous rigidframe bridge are rather complicated, the design of such parts of the bridge has often been based on the designers’ experiences and normally, considerable amount of reinforcement will be furnished. In order to provide the design of the longspan Hutiaomen Continuous RigidFrame Bridge with the basis of rational amount of reinforcement arrangement, the joint parts between the piers and girder of the main span of the Bridge were theoretically calculated and analyzed, and tests for the joint parts were made with a scaledown model of 1:10. The results reveal that the model tests are quite necessary, the selected model can truly simulate the stress conditions of the Bridge, and the measured values from the model tests are pretty close to the theoretic values on the whole.更多还原