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预应力锚索在基坑支护工程中得到广泛的应用,但施工过程中受地质、地下水及周边环境影响会出现各种问题,需要通过分析研究解决问题,满足工期、造价、安全及环境的要求。该文通过对某深基坑预应力锚索张拉锁定后遇到的钢绞线回缩问题的成功处理经验,介绍了在遇到此类问题时的原因分析及可采用的专门器具和典型处理方法,为遇到同类问题的施工处理提供经验方法及分析解析的参考,并结合规范和工程实践,提出安全和实用的工程施工建议。
Prestressed cables are widely used in foundation pit supporting projects. However, due to the influences of geology, groundwater and surrounding environment during construction, various problems will occur. Therefore, problems need to be solved through analysis and research to meet the requirements of construction period, cost, safety and environment Claim. In this paper, the experience of successful treatment of the steel wire retraction problem encountered after the prestressed anchor cable is tensioned and locked in a deep foundation pit is introduced. The reasons for such problems and the special equipment and typical Handling methods, providing experience and analysis and analysis for the construction of similar problems encountered problems, and combined with norms and engineering practice, put forward safety and practical construction suggestions.