力学在三峡船闸人字门背拉杆调试中的应用  

MECHANICAL ANALYSIS ON ADJUSTMENT OF PRESTRESS IN BACK TIE RODS OF MITRE GATE IN THREE GORGES PROJECT

作　　者：刘利珍[1] 张宏志[1] 何正勇[1] 

机构地区：[1]武汉大学土木建筑工程学院,武汉430072

出　　处：《力学与实践》2005年第5期43-45,49,共4页Mechanics in Engineering

摘　　要：船闸人字闸门在水压力、自重等荷载作用下,易于发牛扭曲变形,在人字闸门背后设置背拉杆是增加闸门抗扭措施之一.基于三峡船闸人字闸门背拉杆预应力施工工艺试验,通过建立预应力优化模型求得各组背拉杆的预应力施加控制条件,并通过预应力施加过程分析总结了传统的扭矩法施工工艺失败的原因,在分析闸门受力与变形规律的基础上提出了无扭矩的施加预应力以及只张拉主背拉杆等系列预应力优化施工工艺. 这些新工艺提高了三峡船闸闸门施工质量和测控精度.The gates of ship lock undergo considerable torsional deformation while carrying the loads of water pressure, deadweight etc. To fix tied-rods on the back of the gates is one of the measures to resist the deformation.In this paper, based on the experiments to prestress the tied-rods on the gates of the ship lock in the Three Gorges project, the conditions how to control prestress are obtained by means of an optimized model of prestress. The failure of the traditional twisting-moment-method is analyzed. Thus, a technological procedure to prestress the tied-rods on the back of the gates without twisting-moment is proposed, together with a series of new technologies, such as to make main tied-rods in tension only. These new technologies improve the construction quantity, the accuracy of installing the gates of ship lock in the Three Gorges project.

关 键 词：三峡船闸 人字门 背拉杆 预应力 调试 

分 类 号：TU757[建筑科学—建筑技术科学] U641.331[交通运输工程—船舶及航道工程]