人民长江2025，Vol.56Issue(4)：156-161,6.DOI:10.16232/j.cnki.1001-4179.2025.04.021
预应力闸墩与锚块底面连接方式对闸墩的影响分析
Influences of different linking models between anchor-block bottom and pre-stressed sluice pier on pier structure
摘要
Abstract
As the interface between pre-stressed sluice pier and anchor-block bottom are usually separated by an elastic cushion layer in practical design,the three-dimensional finite element method was used to compare the displacement,stress dis-tribution,and contact state of the sluice pier neck under different combinations of working conditions by two simulation methods:overall model and contact model.The results showed that the two simulation methods did not change the overall deformation and stress of the pier significantly.The contact model can better describe the nonlinear interface characteristics between the anchor block bottom and sluice pier.The separation design can improve the compressive stress level in the central region of the sluice pier neck,but can improve little at marginal part of the pier neck,when the bottom interface is separated as the pier and anchor-block are subjected to force.When the bottom interface is separated,for the unilateral water discharge condition,due to the spillway pier is in an unfavorable eccentric tension status,the contact model will increase the tensile stresses at the edge of the sluice pier neck,however in bilateral water discharge condition,the tensile stresses at the edge of the pier neck can be reduced.When simu-lating the connection between anchor-block and pre-stressed sluice pier numerically,it is suggested to consider the stress level of the sluice pier under the unilateral water discharge condition,and attention should be paid to the concrete anti-cracking at the neck edge of the gate pier.关键词
预应力闸墩/锚块/有限元方法/接触模型/泄水建筑物Key words
pre-stressed sluice pier/anchor-block/finite element analysis/contact model/spillway structure分类
建筑与水利引用本文复制引用
龚亚琦,李志,倪磊,黄永春,周世华..预应力闸墩与锚块底面连接方式对闸墩的影响分析[J].人民长江,2025,56(4):156-161,6.基金项目
国家自然科学基金重点项目(52239009) （52239009）
华能集团科技项目"HNKJ22-H87 TB水电站施工图阶段第一批重大科研项目" （）
