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为了研究建筑工程中基坑围护施工技术,本文首先介绍了基坑围护施工技术的特点,并介绍了基坑围护施工前的分析和准备工作,然后从钻孔灌注桩施工水泥土搅拌桩施工、土方开挖、钢支撑施工、现场环境监测五个方面介绍了建筑工程中基坑围护施工技术。最后从坚持基坑支护的综合处理原则和采取合理的方法进行地下水处理两个方面研究了基坑围护施工过程中需要注意的问题。本文的研究可以作为建筑工程中基坑围护施工过程中的参考。 相似文献
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对重力式挡土墙在基坑围护的可能性进行了分析,阐述了深层搅拌桩作重力式挡土墙围护基坑的方法,并结合连云港自来水深度处理工程进行施工研究,达到了深基坑围护安全保障的效果,解决了基坑围护安全隐患及基坑止水的难题。 相似文献
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关于基坑工程的几点思考 总被引:27,自引:0,他引:27
文中讨论了基坑围护设计中土压力的合理选用,坑外卸土和坑中坑对基坑围护稳定和变形的影响,基坑围护的主要矛盾和围护型式的合理选用,土钉支护的临界高度和复合土钉支护有关问题,基坑工程设计与施工组织设计,基坑工程环境效应与按变形控制设计,关于基坑工程规范和基坑工程设计计算机软件等方面的问题。 相似文献
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结合某高层建筑基坑开挖围护,阐述了为确保基坑周边环境安全而采取的合适基坑围护方案,指出在确保安全的前提下,基坑围护方案的设计优化直接影响到工程投资及施工难易,同时影响整体工程的进度,因此基坑围护方案的设计优化是整个工程成功与否的关键。 相似文献
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随着高层建筑和市政建设的发展,基坑施工已越来越多运用到现代建筑当中。如何做好基坑围护,保证基坑内正常作业安全,而且要防止基坑及坑外土体移动,保证基坑附近建筑物、道路、管线的正常运行。本文就结合某动迁安置基地工程人防地下车库的基坑围护方案,浅析基坑围护的一些要点,希望对今后如何提高基坑围护方案的合理性、科学性能起到一定作用。 相似文献
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本文结合工程实践,根据基坑围护工程,对基坑围护工程施工进行了分析,包括物理学性质、基坑围护设计方案、基坑排水措施、基坑工程监测通过工程实践表明在施工过程中只有严格按照设计图纸进行施工,采用科学合理的施工工艺才能确保工程的质量. 相似文献
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在软土地区进行地下室基坑开挖必须采取围护措施。围护方式直接影响到工程安全、工程造价及工期等,因此围护方案设计环节就很重要和关键。结合某基坑支护工程设计实例,探索了基坑围护方案设计和施工方法,对指导类似工程施工具有一定意义。 相似文献
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《建设机械技术与管理》2006,19(12):I0013-I0013
Favelle Favco公司1968年为纽约世贸大覆双塔楼的建设提供78台STD2700型自升式动臂起重机。不但为其赢得了世界范围内的声誉.也为当时的更大的自升式动臂起重机闯出了一条新路。虽然在以后的不断转手的那些年里并不那么顺利.但Favco公司现在终于为其大型起重机打出了一块市场,Stuart Anderson报道。 相似文献
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《Building Research & Information》1974,2(3):156-157
The volume of concrete which it is convenient and economic to place in one pour is increasing, but for technical reasons some specifications restrict it. This special feature opens with a report by the UK Construction Industry Research and Information Association surveying current practice and reviewing the literature on large area concrete pours. The report* concludes that limitations on pour size, water-retaining structures excepted, are often unnecessary. 相似文献
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为了保证大跨度大空间的质量安全、保证大跨度大空间建筑的可持续发展,就必须对大跨度大空间公共建筑结构进行合理地设计,使其更符合时代发展的需要。 相似文献
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The computer model developed has been used successfully for studying the large pipe-bending problem frequently encountered in offshore structural engineering. The pipe-soil interaction is modelled by using the Coulomb friction law. The modified finite element approach coupled with a modified tangent stiffness procedure is used to handle the nonlinearities (geometric and material, etc.) in the problem. The material nonlinearity has been considered both by the plastic-hinge method and by an elastic-plastic method. Before studying the practical problems, sufficient check problems were analysed and a good agreement was found between theoretically exact solutions and the results obtained from the developed computer model. 相似文献
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Haukur Ingason Ying Zhen Li Glenn Appel Ulf Lundström Conny Becker 《Fire Technology》2016,52(5):1539-1558
This paper presents the main results of six large scale fixed fire fighting system tests that were carried out in the Runehamar tunnel in September 2013. It describes the background and the performance of the system. The main fire load consisted of 420 standardized wood pallets and a target consisting of a pile of 21 wood pallets placed 5 m from the rear end of the main fire load. The purpose was to investigate possible fire spread. The water spray system is a deluge zone system delivering 10 mm/min in the activated zone. The detection system was simulated with use of thermocouple in the tunnel ceiling. The alarm was registered when the ceiling gas temperature was 141°C. After alarm was obtained the system was activated manually after a given delay time that was varied in the tests. The heat release rates in tests with fire suppression were reduced to 20–45 MW compared to 100 MW estimated for a free-burn test or 75 MW in test 6 with a failure of activation. Fire spread to the target was prevented after fire suppression. 相似文献