岩溶地区长嵌岩桩的优化设计

通过综合分析嵌岩桩荷载传递机理,结合山区高速公路下伏岩溶的嵌岩桩工程特点,确定了桩身荷载、桩身内力、竖向位移沿桩深度的变化规律,优化了山区高速公路典型下伏岩溶及工程地质条件下的长嵌岩桩的嵌岩段钢筋布置及桩身配筋,从而使长嵌岩桩达到既安全又经济的设计效果。

On optimized design for long rock socket piles in karst areas

According to the comprehensive analysis of the loading transferring mechanism of the rock socket piles, and combining with the project characteristics of the rock socket piles of the underlying karst of mountainous area express highways, the paper identifies the change rules for the pile loading, the internal force of piles and the depth of the vertical displacement along piles, and optimizes the typical underlying karst of mountainous area expressways and the layout of the socket section of the long rock socket piles and the pile reinforcement, so as to achieve the design effect of the safe and economical for long rock socket piles.