不同类型可回收式锚索基本试验研究

发布时间：2018-01-30 18:54

本文关键词： 高层建筑深基坑支护锚索可回收试验　出处：《施工技术》2017年21期 　论文类型：期刊论文

【摘要】：为了研究在软土条件下不同类型可回收式锚索的力学性能进行了现场试验。设计的试验锚索构造合理,选用的锚索施工工艺成熟可靠。本试验采用2种不同类型的可回收式锚索,分别为压力集中型和压力分散型,均按照普通钻孔和高压旋喷扩大头结合的工艺进行施工。2种不同类型的锚索分别制作1组,每组3根,通过多循环荷载作用下的基本试验,对其结构形式的合理性、荷载-位移曲线以及回收性能进行验证。试验对不同类型的可回收式锚索的力学性能进行了探索,试验数据对本工程锚索施工起指导作用。
[Abstract]:In order to study the mechanical properties of different types of recoverable anchor cables under soft soil conditions, field tests were carried out. The construction technology of Anchorage cable selected is mature and reliable. In this experiment, two kinds of recoverable anchor cables are adopted, which are pressure concentration and pressure dispersion respectively. According to the technology of common drilling and high pressure rotary jet expansion, two kinds of anchor cables of different types were made into one group, three in each group, through the basic test under the action of multiple cyclic loads. The rationality of the structure, load-displacement curve and recovery performance are verified. The mechanical properties of different types of recoverable anchor cables are explored in the experiment. The test data play a guiding role in the construction of Anchorage cable in this project.
【作者单位】：中国建筑第二工程局有限公司;
【分类号】：TU753
【正文快照】： 0引言随着地下空间的迅猛发展,人们对于地下空间的利用率要求也逐渐增高,传统的不可回收式普通锚索渐显弊端。普通锚索完成临时支护后,在临近区域遗留杆体,造成临近场地地下空间开发困难,特别是对地铁盾构施工带来极大风险,一定程度上限制了普通锚索的应用。因此可回收式锚索

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