基于Drucker-Prager准则球形洞室的弹塑性分析  

Plastic analysis of ball cavity based on Drucker-Prager Principles

作　　者：肖志明 杨元军 

机构地区：[1]四川路桥公路隧道公司

出　　处：《山西建筑》2007年第35期88-90,共3页Shanxi Architecture

摘　　要：基于岩体力学中关于深埋圆形洞室的假设和Drucker-Prager准则,推导了深埋球形洞室开挖后应力弹性分布、塑性分布和塑性区半径的公式,并用所得到的公式与圆形洞室进行了比较,算例表明,在相同荷载和岩体强度参数的前提下,球形洞室的受力比圆形洞室的受力合理。Based on the assumption of deep-buried ball cavity and Drucker-Prager Principles in rock mechanics, it deducts a formula of stress elasticity distributing, plastic distributing and plastic radius after digging deep-buried ball cave. It also compares the deducted formula with round cavity. The calculation indicates that ball cavity stress is more rational than round cavity stress under the same load and rock intensity parameters.

关 键 词：DRUCKER-PRAGER准则 球形洞室 弹塑性分析 

分 类 号：TU313[建筑科学—结构工程]