泥炭土深基坑支护工程高压旋喷扩体锚索施工工艺.pdf

2015年4月上 施工技术 第44卷第7期 CONSTRUCTION TECHNOLOGY 99 D0I:10.7672/5js2015070099 泥炭土深基坑支护工程高压旋喷扩体锚索施工工艺 王家权，王维1，李文平，高炳勋1，唐和焱2，张庆文2 (1.西南有色昆明勘测设计（院）股份有限公司，云南昆明650051； 2.西南林业大学土木工程学院，云南昆明650224) [摘要]结合基坑支护工程实例，介绍了昆明软弱泥炭质土层高压旋喷扩体错索在深基坑支护工程中的施工工艺 及铺固试验.通过不同的施工工艺试验分析，探索针对该场地软弱地质条件下的预应力锚索施工工艺，以确保预 应力错索施工达到设计要求承载力，保证预应力错索的有效性和基坑支护结构体系的可靠性. [关键词]深基坑；支护；泥炭质土；错索；施工技术 [中图分类号]TU753 [文献标识码]A [文章编号]1002-8498(2015)07-0099-03 Construction Technology of High Pressure Jet Grouting Anchor Cable of Deep Foundation Excavation in Peat Soil Wang Jiaquan' Wang Wei' Li Wenping' Gao Bingxun' Tang Heyan2 Zhang Qingwen2 (1.Southuest Nonferrous Kunming Surreying and Design Institute Co.Lid.Kunming Yunnan 650051 China; 2.Faculty of Ciril Engineering Southwest Forestry University Kunming Yunnan 650224 China) Abstract:Based on engineering practice this paper introduced construction technique and anchorage test of high pressure rotary jet grouting anchor cable of foundation excavation supporting in peat soil in Kunming.According to the testing analysis on different methods this paper explored construction technique of prestressed anchor cable in soft soil which can ensure the bearing capacity of anchor cable meet the design requirement and the supports is effective and reliable. Key words:deep foundation excavation supports;peat soil;anchor cables;construction 0引言 为第四系冲、洪积层(Q) 岩性为粉质黏土；第 通过昆明市某项目基坑支护工程实例，介绍了四系冲、湖积层(Q) 岩性为粉质黏土、黏土、淤 该基坑支护工程中预应力锚索在软弱地质条件下， 泥质黏土、泥炭质土、含黏性土砾砂、粉土等.在 通过不同的施工工艺试验分析，探索针对该场地软 基坑开挖深度范围内，以填土、...