Firstly, analyze the main girder stress in different stage in the paper.
首先，本文分析了桥梁成桥阶段应力。
The results show that the crane is unnecessary to replace for its low total stress level and large strength margin of the main girder (main stressed part).
计算结果指出：门机结构总体应力水平较低，其严重受力件主梁具有较大的强度富裕度，不必更换。
Analysis of deflection of main girder of crane is made according to the result of residual stress test.
根据残余应力测试的结果，对起重机主梁的下挠变形进行了分析。
The stress and deformation of the concrete box girder under the temperature load is one of the main factors affecting engineered quality.
温度荷载作用下的混凝土箱梁的应力和变形，是影响工程质量的主要因素之一。
The stress level and distribution of the main girder during construction and service stage at 1/30 model are studied.
借助1∶30的整体模型，研究了施工阶段、成桥阶段全桥主梁的应力水平及分布状况。
The three dimensional finite element stress analyses of main girder with twin-box cross section used commonly in cable-stayed bridge have been carried out.
本文对斜拉桥双箱单室箱形主梁进行了空间有限元应力分析。
The result shows that to tension the main cable can obviously improve the stress of the main girder of the reverse suspension bridge.
结果表明，张拉主缆索可以显著地改善反吊桥主梁的应力。
The result shows that to tension the main cable can obviously improve the stress of the main girder of the reverse suspension bridge.
结果表明，张拉主缆索可以显著地改善反吊桥主梁的应力。
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