Abstract：According to the simple beam theory, there is a remarkable error in the positive stress calculation of the beam with width-span ratio greater than 0.5 or depth-span ratio higher than 0.2. Thus, for the behavior analysis of short cantilever beam under loads, the transverse bending effect should be taken into account. In order to analyze the influence of the lateral bending deformation of main beam on the positive stress of the short cantilever cable-stayed bridge, the non-uniform coefficient of positive stress is defined. And then a loading test with varying lateral loading locations was carried out on a segment model of organic glass with 1∶1 wide-span-ratio. The cable force and strain increment were collected. By comparing the test results and the finite element analysis results, a conclusion is drawn that the influence transverse load position on cable force and shear lag is very small. While, the lateral bending deformation will change the size and distribution of positive stress in the vicinity of loading cross section. The influence of the transverse bending effect on the positive stress gradually reduces to the free end. The development trend change from decrease to increase towards the fixed end. The size and irregularity degree of the main beam stress near the tower are different from that without bending effect.
卫军 黄敦文 晏辉煌 徐港 朱玉. 短悬臂斜拉桥主梁正应力分布试验研究[J]. 土木工程学报, 2017, 50(1): 70-74.
Wei Jun Huang Dunwen Yan Huihuang Xu Gang Zhu Yu. Experimental study on normal stress distribution of main girder in short cantilever cable-stayed bridge. 土木工程学报, 2017, 50(1): 70-74.
