NUMERICAL SIMULATION ON OPEN DEFORMATION OF JOINTS IN MIDDLE ISOLATED PIER OF THE THREE GORGES PERMANENT SHIPLOCKS
Sheng Qian1，2， Huang Zhengjia2， Ding Xiuli1，2， Zheng Hong1， Ge Xiurun2， Lee C F 3
(1Key Laboratory of Rock and Soil Mechanics，Institute of Rock and Soil Mechanics， The Chinese Academy of Sciences， Wuhan 430071 China) (2Yangtze River Scientific Research Institute， Wuhan 430019 China) (3Deparment of Civil Engineering，University of Hong Kong， Hong Kong， China)
Abstract：In light of the open deformation of joints in the middle isolated pier of permanent shiplocks in the Three Gorges Project，a typically simplified joint model is set up，based on the geological conditions and the crack investigation. The method of joint interface element is used to analyse the open deformation of joints and to study the characteristic of open joint crack and its relation to the excavation-disturbed zone. The study results show that the open deformation and the open length of joints are directly related to their occurence and geometrical characteristic，and that the possible maximum open zone of joints has almost the same pattern with the plastic zone resulting from elasto-plastic analysis and the excavation-disturbed zone from in-situ test. If the prestressed anchor cables are rationally applied in good time，the open deformation and the open length of joints will be reduced.
盛 谦1，2 黄正加2 丁秀丽1，2 郑 宏1 葛修润1 李焯芬3 . 三峡工程永久船闸中隔墩原生裂隙施工张开变形的数值模拟研究[J]. 岩石力学与工程学报, 2002, 21(07): 1016-1021.
Sheng Qian1，2， Huang Zhengjia2， Ding Xiuli1，2， Zheng Hong1， Ge Xiurun2， Lee C F 3. NUMERICAL SIMULATION ON OPEN DEFORMATION OF JOINTS IN MIDDLE ISOLATED PIER OF THE THREE GORGES PERMANENT SHIPLOCKS. , 2002, 21(07): 1016-1021.
2002, Vol. 21 
