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建筑物纠偏加固是技术难度高、风险大的非常规工作,纠偏加固没有形成独立的理论体系,为了探索建筑物纠偏加固机理和施工方法,针对某小学综合楼设计施工概况及倾斜损坏情况,给出房屋所在地的工程地质简况,分析建筑物倾斜的原因,介绍掏土纠偏、房屋基础下淤泥质粉质黏土层注浆加固施工及监测过程,提出了纠偏加固过程中突发工程事故的处置办法。经掏土纠偏和注浆加固,房屋的倾斜率由17‰纠正为4‰,沉降不再有新发展。 相似文献
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平面体形复杂的房屋倾斜施行纠偏加固较一般房屋难。本文通过工程实例,对软土地区某体型复杂办公楼纠偏加固实例的设计施工进行了阐述分析,对类似地区的房屋纠偏加固设计与施工具有参考、借鉴意义。 相似文献
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通过对某住宅楼产生倾斜的原因分析,表明是由于局部地基承载力不足所造成,同时确定了房屋加固纠偏的设计方案,即采用纠偏并同时对地基进行加固的设计方案,并阐述了加固纠偏施工和监测的技术要求。 相似文献
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某别墅由于附近有一高边坡支护施工和其基础土层压实度不足,发生不均匀沉降并引起房屋倾斜,本工程先设置钢管桩进行基础加固,再通过断柱抬升施工,对房屋进行纠偏处理,文中介绍了基础加固纠偏方法选择和设计施工中的注意事项,供相似项目参考借鉴。 相似文献
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压桩掏土纠偏法是掏土纠偏技术和锚杆静压桩加固技术的联合应用,是针对采用浅基础的倾斜建筑进行处理的一种经济有效的方法,文中针对某倾斜房屋纠偏加固工程实例,分析了房屋倾斜的原因,重点介绍了纠偏加固方案的选择、施工顺序的确定以及锚杆静压桩的布置等情况,可为同类问题的处理提供参考。 相似文献
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对位于上海软土地区某6层砖混住宅采用压桩掏土法纠偏。常规压桩纠偏,先在建筑物较大一侧压桩、封桩;再在建筑物沉降较小一侧掏土纠偏,并在掏土一侧设置少量保护桩,提高建筑物回倾后的稳定性。在该工程的施工过程中,将沉降较大一侧的压桩和沉降较小一侧的掏土纠偏同时进行,并推迟沉降较大一侧的封桩,既缩短了工期,又减小了桩顶的附加应力,同时房屋的附加沉降也控制在允许范围内,取得了较好的纠偏效果。 相似文献
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软土地区的建筑物由于各种原因产生倾斜超标后,应对其进行纠偏补强,但纠偏过程中技术难度较大,文中介绍了某货储仓库采用深层推挤法进行纠偏补强的设计及施工 相似文献
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本文结合工程实例介绍了一种新的建筑物纠倾方法。该方法的特点是顶升和迫降同时进行,完全能够控制纠倾量,从而增加了纠倾设计施工的可预见性和安全性。 相似文献
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《Stahlbau》2017,86(10):862-872
Building redevelopment – Solutions for roof and façade using lightweight steel construction . The research project ”Building redevelopment – Solutions for roof and façade using lightweight steel construction“ investigates possibilities to improve energetically existing roof and façade systems in lightweight steel and massive construction by using lightweight steel systems. As refurbishment systems steel sandwich panels as well as modular lightweight steel constructions, consisting for example of steel supporting profiles, thermal insulation and steel sheet profiles, will be applied. Besides hygrothermal‐building‐physical studies also static‐mechanical reviews for the energetically optimized building systems will be conducted. The present paper shows selected results that have been developed within the project. On the one hand, the energetic quality of existing façades in lightweight steel construction is shown, and savings potentials due to heat transmission, which are opened up by the renovation of these façades, are clarified. On the other hand, some of the resulting building‐structural questions with regard to load‐bearing behaviour and loadings are discussed. 相似文献
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Rectification of jacking method for brick‐wooden buildings in deformation analysis with CFST reinforcement
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Xiao‐nan Zhang Ren‐liang Shan Man Lu 《The Structural Design of Tall and Special Buildings》2018,27(3)
The tilting of buildings not only leads to inconvenience but also causes serious building collapses with heavy casualties and serious social impacts. However, rectification and reinforcement construction method started late in China. Now, this construction pattern mainly depends on sophisticated design techniques, without systematic techniques to reference. Based on the in‐depth analysis on tilt reason of a brick‐wooden building in Yunnan Province in China and combined with jacking rectification method, the impact pile project, artificial inserting shield engineering for steel box girder project, unbonded prestressed engineering project and concrete filled steel tube reinforcement example. Analyzing the multipoint synchronous lifting process by 3‐dimensional numerical simulation in ANSYS finite software. The actual monitoring results showed that the maximum inclination rate was reduced to less than 2.95‰ in the end, and the architectural distortion was stabilized in the process of rectification and reinforcement, which guarantees building safety and efficiency in the process of rectification. 相似文献
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轻骨料混凝土尤其是陶粒混凝土作为非结构构件的保温或找坡层已大规模应用于重庆市建设工程中,但应用于承重结构的结构轻骨料混凝土还无先例。重庆金鹰财富中心是一个既有建筑的改造项目,结合当地特点及工程特点采用了高强的陶粒混凝土(柱采用LC40,梁板采用LC30),在重庆首次使用了结构轻骨料混凝土。该文主要介绍了结构轻骨料混凝土在金鹰财富中心工程的设计特点及与普通混凝土进行了设计方案对比,还提出轻骨料混凝土的一些应用展望。 相似文献