三峡永久船闸衬砌墙分水平缝对结构及结构锚杆受力影响研究

STUDY ON THE EFFECT OF HORIZONTAL JOINTS OF PERMANENT SHIP LOCK LINED WALL ON FORCING OF STRUCTURE AND ANCHORED BARS AT THE THREE GORGES PROJECT

采用考虑三维接触非线性的结构温度徐变仿真计算方法 ,针对三峡永久船闸 (全衬式和混合式 )闸室墙整体和分缝两种结构形式进行了计算分析 ,研究表明 :闸室墙分水平缝可以有效地降低全衬式和混合式结构混凝土铅直向拉应力 ,但使最大锚杆拉应力值和平均锚杆拉应力值增加 ,分布的离散性增大 ,在横缝和纵缝交点附近出现锚杆拉应力集中现象。

The jointed and whole structure types of lock bay wall for the permanent ship lock of Three-Gorges project are computed and analyzed by using a method for simulation and computation of 3-D contact nonlinear structure temperature creep in the paper. The study shows that the vertical tensile stress value of strcture concrete can efficiently reduced by horizontal joints of lock bay wall, the maximum tensile stress value of anchored bars and average tensile stress value of anchored bars are increased, the stress distribution of anchored bars is more discrete, and tension stress concentration of anchored bars appears on the conjunction of horizontal and vertical joints.