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| 变截面连续箱梁活荷载内力增大系数计算 | |
| 引用本文： | 王赞芝,辛立凤,吴辉琴,王家全,李卫,高大峰.变截面连续箱梁活荷载内力增大系数计算[J].广西大学学报(自然科学版),2011,36(1):113-120. |
| 作者姓名： | 王赞芝 辛立凤 吴辉琴 王家全 李卫 高大峰 |
| 作者单位： | 1. 广西工学院,土木建筑工程系,广西,柳州,545006 2. 陕西省文化遗产保护规划设计研究院,陕西,西安,710075 3. 西安建筑科技大学,土木工程学院,陕西,西安,710055 |
| 基金项目： | 国家自然科学基金资助项目(51009030); 广西教育厅科研资助项目(201012MS122); 广西工学院博士基金科研项目(院科博0901); 广西工学院大学生科研立项重点项目(2010052,2010053) |
| 摘 要： | 为研究变截面连续箱梁在非对称荷载作用下的受力特性,将连续梁的各支座当作铰支,采用差分方法计算变截面连续梁各跨的抗弯惯矩修正系数;将连续梁的每跨两端当成固定端,计算变截面连续箱梁桥的抗扭惯矩修正系数;沿梁宽将桥分为8等分,画出9个梁位的影响线,按照可能布置的车道数分别布载,最终计算出各车道数对应的内力增大系数,并考虑按现... |
| 关 键 词： | 内力增大系数 变截面梁 连续箱梁桥 有限差分法 抗弯惯矩修正系数 抗扭惯矩修正系数 等代简支梁法 Guyon-Massonnet法 |
The internal force increment coefficient of the continuous box girder of variable cross-sections subjected to live load |
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| WANG Zan-zhi,XIN Li-feng,WU Hui-qin,WANG Jia-quan,LI Wei,GAO Da-feng.The internal force increment coefficient of the continuous box girder of variable cross-sections subjected to live load[J].Journal of Guangxi University(Natural Science Edition),2011,36(1):113-120. | |
| Authors: | WANG Zan-zhi XIN Li-feng WU Hui-qin WANG Jia-quan LI Wei GAO Da-feng |
| Institution: | WANG Zan-zhi1,XIN Li-feng1,WU Hui-qin1,WANG Jia-quan1,LI Wei2,GAO Da-feng3(1.Civil and Architectural Engineering Department,Guangxi University of Technology,Liuzhou 545006,China,2.Shanxi Cultural Heritage Protection Research Institute,Xi'an 710075,3.School of Civil Engineering,Xi'an University of Architecture and Technology,Xi'an 710055,China) |
| Abstract: | In order to study the properties of the continuous box girder of variable cross-section subjected to unsymmetrical loads,all supports of the continuous bridge are regarded as pins,and the finite difference method was used to calculate the correction factors of flexural stiffness for every span of the continuous bridge.Then,regarding the two ends of every span of the bridge as clamped,the correction factors of torsional stiffness were calculated.After that,the bridge was divided into eight equal parts along ... |
| Keywords: | internal force increment coefficient beam with variable cross-section continuous box girder bridges finite difference method correction factors of flexural stiffness correction factors of torsional stiffness equivalent simple-beam method Guyon-Massonnet method |
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