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葛洲坝水利枢纽二号船闸位于三江右岸,左侧接非溢流坝和冲砂闸,右侧为黄草坝非溢流坝。闸室有效尺寸为长280米×宽34米×5米(槛上水深),上、下游最大水头差27米,为一单级船闸,是目前国内最大的船闸。船闸下闸首紧接闸室末端,其上布置有人字工作闸门、泄水检修闸门、工作门防撞装置、人字门启闭机以及下游浮式检修门等设施。下闸首结构型式曾研究过分离式与整体式两种方案。由于结构受力大,基岩条件差,人字门允许变形量小,经比较确定选用整体式结构,这是长江葛洲坝船闸唯一采用整体式结构的部位。本文就整体式结构设计作一简要介绍。
Gezhouba Project No. 2 ship lock is located on the right bank of Sanjiang, the left to non-overflow dam and red sand gate, the right side of the non-overflow Dam Huangcao dam. The effective size of the lock chamber is 280 meters long x 34 meters wide and 5 meters wide (water depth on the threshold), and the maximum head difference between the upper and lower reaches is 27 meters. It is a single-stage ship lock and is the largest lock in the country. The gate of the ship lock is directly connected to the end of the lock chamber, on which are arranged the working gate of the human character, the flood relief gate, the work gate anti-collision device, the gantry gate hoist and the floating floating access door and other facilities. Under the gate structure type has studied two separate and integrated programs. Due to the structure of the force, poor bedrock conditions, Mito door allows deformation is small, compared to determine the use of integral structure, which is the only use of the Yangtze River Gezhouba Ship Lock monolithic structure of the site. This article on the overall structural design for a brief introduction.