用Hoek-Brown经验强度准则进行张性基础设计

DESIGN OF TENSILE FOUNDATION ON ROCK MASS WITH HOEK-BROWN EMPIRICAL STRENGTH CRITERION

以电线塔基为例 ,针对张性基础的可能破坏模式 ,在简单介绍基底应力计算方法、基础设计原理的基础上 ,考虑岩体固有特点和非线性破坏特征 ,引入 Hoek-Brown经验强度准则 ,系统阐述张性基础容许抗力计算理论和极限承载力验算方法 ,并以算例说明基础设计的步骤。

On the basis of introducing the possible failure patterns and stress calculating method of tensile foundation on rock mass, the authors introduce the method to calculate the allowable uplift force and ultimate bearing capacity with Hoek-Brown strength criterion and illustrate the design steps of tensile foundation with an example.