探究复杂地质条件下止水咬合桩施工难点与应对

Exploring the Construction Difficulties and Countermeasures of Water-stop Occlusal Piles under Complex Geological Conditions

在深基坑支护工程中,咬合桩是在桩与桩之间存在一定的间隙,使形成相互咬合的状态,并排列成一定规模的一种基坑围护结构。它独特的结构和施工工艺造就了坚实的防护性能和止水性能,在复杂的地质条件下,对施工人员和制定的施工工艺都有极高的要求。本文对大连湾海底隧道建设工程干坞子项工程中的止水咬合桩施工工艺进行学习分析,在复杂地质条件下止水咬合桩的重难点进行整理概述,并提出了相应的几点应对措施。

In the deep foundation pit support engineering,the occlusal pile is a kind of foundation pit enclosure structure that there is a certain gap between the piles to form a mutual occlusion state and are arranged into a certain scale.Its unique structure and construction technology have created a solid protective performance and water-stopping performance.Under complex geological conditions,there are extremely high requirements for the construction personnel and the formulated construction technology.This paper studies and analyzes the construction technology of the water-stop occlusal piles in the dry dock sub-project of the Dalian Bay Subsea Tunnel Construction Project,summarizes the important and difficult points of the water-stop occlusal piles under complex geological conditions,and puts forward some corresponding countermeasures.