深部软岩工程大变形力学分析设计系统

采用飞箭软件公司的有限元程序自动生成系统作为软件开发平台，进行“深部软岩工程大变形力学分析设计系统”的合作开发工作。该软件系统具有如下特色：（1）以和分解有限变形力学分析模型为主体，包括极分解力学分析模型供用户进行对比分析；（2）强调非线性大变形力学设计特色：力学对策设计、过程设计和参数设计；（3）包括多种岩土材料本构模型和工程材料单元，可以进行边坡工程、地基工程、地下洞室工程等大变形力学分析；（4）具有我国自主知识产权。目前该软件的弹性、弹塑性大变形二维计算程序和界面已经开发完成。通过对典型算例的弹性数值分析，验证大变形程序的正确性。该软件系统的问世，可为深部软岩巷道等岩体大变形力学问题提供具有分析和设计功能的数值分析软件系统。

SOFTWARE SYSTEM FOR LARGE DEFORMATION MECHANICAL ANALYSIS OF SOFT ROCK ENGINEERING AT GREAT DEPTH

Up to now,there is no finite element software including nonlinear large deformation theory based on S-R decomposition theorem,in which the deformation gradient F is decomposed into the addition of the deformation and the rotation by a co-moving coordinate system method.In this work,such a software system waw developed,which is named as A Software on Large Deformation Analysis of Soft Rock Engineering at Great Depth.Two work groups,worked together on the software by using finite element program generator(FEPG) developed by FEGEN Software Company.The software has the following features:(1) it includes large deformation theory based on S-R decomposition theorem first time as well as one based on polar decomposition theorem for comparison,the latter is included by most commercial finite element software;(2) three design methods for nonlinear mechanical problem,i.e.countermeasure design,procedure design and parameter design,are fulfilled here for large deformation analyses;(3) it includes generally used elastoplastic constitutive models for geomaterials and element types for supports,and therefore is fit for large deformation mechanical analyses for slope,foundation and underground engineering;and(4) it has a copyright of our own country.At present,the interface of the software has accomplished and programs of elastic and elastoplastic constitutive models based on two large deformation theories in two-dimension have been fulfilled,tested and implemented into the interface.Representative numerical examples confirm the rationality of the programs.The software will be a useful numerical tool for large deformation analyses and nonlinear mechanical design for soft rock engineering at great depth.