大截面抗滑桩水化热温度场及应力场机理分析研究  

Analysis and Study on Mechanisms of Hydration Heat Temperature Field and Stress Field of Large-section Anti-slide Pile

作　　者：侯小强 姚政学 王健 王政 侯艳平 

机构地区：[1]甘肃建筑职业技术学院,甘肃兰州730050 [2]甘肃省科学院地质自然灾害防治研究所,甘肃兰州730000 [3]国网兰州供电公司,甘肃兰州730030 [4]甘肃庆城县供电局,甘肃庆城745100

出　　处：《城市道桥与防洪》2015年第12期169-173,19,共5页Urban Roads Bridges & Flood Control

基　　金：甘肃省科技支撑计划研究项目(1304FKA055);甘肃省高等学校科研项目(2013B-124);国家电网甘肃电力科技项目(5227011600D9)

摘　　要：通过利用有限元模拟分析,根据工程和现场环境的在特点,准确地模拟了实心和箱型两种抗滑桩混凝土水化热产生的温度场和应力场变化状况,并考虑了与空气的对流及与锚固地基土的热传递等各种初始条件和边界条件因素,通过对两种结构抗滑桩里表温差、温度峰值、温度峰值、拉压应力和容许应力出现时间的影响分析,认为箱型抗滑桩具有散热表面较大,温差较小,在温度变化和应力变化均小于实心结构抗滑桩,其具有更好的耐久性和安全性。The article truly simulates the change statuses of temperature field and stress field caused by the concrete hydration heat of two solid and box anti-slide piles, and considers various initial conditions and boundary conditions of convection with air and heat transmission with anchoring foundation soil. According to the analysis on the effects of the temperature differences, temperature peak values, tension stresses and allowable stresses of two structural anti-slide piles, the article considers that the box anti-slide pile has the performances of larger heat radiation surface and smaller temperature difference. And its temperature change and stress change are all smaller than the solid structural anti-slide pile. It has the better durability and safety.

关 键 词：抗滑桩 水化热 温度场 应力场 

分 类 号：TU753.3[建筑科学—建筑技术科学]