一、前言迄今,在土石坝的应力应变计算中,作为描述土的应力应变关系的数学模型,邓肯—张—库尔霍模型(Duncan—Chans—Kulhawy,1970—1972,下称邓肯模型)比较流行。我国土石坝的应力应变计算,就是从该模型开始的(甘肃党河坝,华东水利学院,1975)。在国外,采用该模型进行土石坝应力应变分析的,除较早的Oroville,深山(日本),El lnflernillo等坝例之外,近期则有Brianne,Dalesice,Guri,Tehri, I. INTRODUCTION So far, in the calculation of the stress-strain of earth-rock dams, as a mathematical model describing the stress-strain relationship of the soil, the Duncan-Chang-Kulho model (Duncan-Chans-Kulhawy, 1970-1972, hereinafter referred to as the Duncan model) has compared popular. The stress-strain calculation of earth-rock dams in China starts from the model (Danheba, Gansu, East China Institute of Water Resources, 1975). In foreign countries, using this model for earth-rock dam stress and strain analysis, in addition to the earlier Oroville, Shenshan (Japan), El lnflernillo and other dam cases, recently there are Brianne, Dalesice, Guri, Tehri,