长沙理工大学学报：自然科学版
長沙理工大學學報：自然科學版
장사리공대학학보：자연과학판
Journal of Changsha University of Science and Technology:Natural Science
2011年
4期
42-48
,共7页
多跨矮塔斜拉桥%合拢工艺%受力状态%位移
多跨矮塔斜拉橋%閤攏工藝%受力狀態%位移
다과왜탑사랍교%합롱공예%수력상태%위이
cable-stayed bridge with multi-span and low towers%closure construction%stress state%displacement
以广东省江肇高速公路西江特大桥（五跨矮塔斜拉桥）为背景,采用BDCMS有限元软件建立平面梁单元模型;以塔顶偏位及墩顶应力为控制目标,确定了次中跨、中跨的合拢顶推力;又以合拢口两端挠度为控制目标,推导了不平衡配重;进而分析比较不同顶推力作用下成桥后结构受力状态和位移,由此获得最优的合拢方案.
以廣東省江肇高速公路西江特大橋（五跨矮塔斜拉橋）為揹景,採用BDCMS有限元軟件建立平麵樑單元模型;以塔頂偏位及墩頂應力為控製目標,確定瞭次中跨、中跨的閤攏頂推力;又以閤攏口兩耑撓度為控製目標,推導瞭不平衡配重;進而分析比較不同頂推力作用下成橋後結構受力狀態和位移,由此穫得最優的閤攏方案.
이광동성강조고속공로서강특대교（오과왜탑사랍교）위배경,채용BDCMS유한원연건건립평면량단원모형;이탑정편위급돈정응력위공제목표,학정료차중과、중과적합롱정추력;우이합롱구량단뇨도위공제목표,추도료불평형배중;진이분석비교불동정추력작용하성교후결구수력상태화위이,유차획득최우적합롱방안.
Xijiang Large Bridge on the highway of Jiangmen to Zhaoqing in Guangdong province is taken as an example,and the analytical model with plane beam elements is established by using the FEM software BDCMS.By taking the tower top displacement and tower bottom stress as the controlling aim,the optimized closure jacking forces on the side-middle and middle spans are determined.Meanwhile,the unbalanced weight is derived according to the vertical displacements at two closure ends.Finally,the stress and displacement states of the bridge under the different jacking forces are discussed and compared,in which the optimized closure construction plan is obtained.
