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气温变化对岩石基坑支护桩的影响分析

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为探究气温年变化对岩石基坑支护桩温度场及应变场的影响规律,文中采用数值模拟的方法分析了气温年变化引起的支护桩温度应变场的分布规律.研究结果表明,岩石基坑支护桩内的温度场沿竖向呈均匀分布,而沿桩径方向则呈线性单调分布;支护桩基坑侧和迎土侧表面竖向温度应变呈现正弦变化的规律.研究为岩石深基坑支护体系的优化设计提供参考依据.
ANALYSIS OF THE IMPACT OF TEMPERATURE VARIATIONS ON ROCK BASE PIT SUPPORT PILES
To investigate the impact of annual temperature variations on the temperature and strain fields of rock base pit support piles,a numerical simulation method was used to analyze the distribution patterns of temperature and strain fields in support piles caused by annual temperature changes.The study results indicate that the tempera-ture field within the rock base pit support piles is uniformly distributed vertically,while it exhibits a linear and mo-notonous distribution along the pile radius direction.The vertical temperature strain on the support pile's pit side and soil-facing side follows a sinusoidal variation pattern.This research can provide valuable references for optimiz-ing the design of rock deep foundation pit support systems.

rock foundation pitannual variation of temperaturepit support pilecompressive strain increment

杨晓娟、王威、曹国旭、康醒、韩涛、王衍森

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徐州地铁集团有限公司,江苏 徐州 220009

中国矿业大学,江苏 徐州 221116

广州地铁设计研究院股份有限公司,广州 510010

岩石基坑 气温年变化 基坑支护桩 压应变增量

2024

低温建筑技术
黑龙江省寒地建筑科学研究院

低温建筑技术

影响因子:0.237
ISSN:1001-6864
年,卷(期):2024.46(10)