【摘要】：后錨固技術(shù)是指通過相關(guān)技術(shù)手段將被連接件連接到已有結(jié)構(gòu)上的技術(shù)。后錨固技術(shù)在歐美等國家已經(jīng)得到廣泛的應用，開展了大量系統(tǒng)的試驗研究，取得了豐富的成果，并制定了相應的認證標準及規(guī)范。我國后錨固技術(shù)研究相對較晚，2004年分別頒布實施了第一本行業(yè)工程標準《混凝土結(jié)構(gòu)后錨固技術(shù)規(guī)程》JGJ145-2004和行業(yè)產(chǎn)品標準《混凝土用膨脹型、擴孔型建筑錨栓》JG160-2004。近年來混凝土結(jié)構(gòu)后錨固技術(shù)的應用越來越多，技術(shù)也不斷進步。根據(jù)我國后錨固技術(shù)的發(fā)展和目前工程建設(shè)需要，2011年住房和城鄉(xiāng)建設(shè)部下達了《混凝土結(jié)構(gòu)后錨固技術(shù)規(guī)程》JGJ145-2004修訂任務。結(jié)合JGJ145-2004的修訂，，修訂組開展了一系列的試驗研究。本文針對后錨固技術(shù)的抗震性能及施工允許偏差進行了試驗研究是其系列研究的部分內(nèi)容。本文有關(guān)試驗研究內(nèi)容及試驗研究的結(jié)論如下： 1.歸納總結(jié)了有關(guān)后錨固技術(shù)的既有研究成果。并對工程常用后錨固技術(shù)產(chǎn)品之膨脹型錨栓，擴底型錨栓，化學錨栓和植筋的主要破壞狀態(tài)及影響錨栓受力性能的主要因素進行了歸納。 2.對膨脹型錨栓，擴底型錨栓，普通化學錨栓三種錨栓進行抗震性能試驗研究，觀察錨栓破壞狀態(tài)，分析錨栓在動力荷載作用下受力性能。結(jié)果表明，膨脹型錨栓和普通化學錨栓在動力荷載作用下的破壞狀態(tài)與靜力荷載作用下的破壞狀態(tài)不同，并且承載力也有較大幅度的降低，其抗震性能較差，應限制在地震設(shè)防區(qū)的應用。擴底型錨栓在動力荷載作用下的名義屈服承載力相比靜力加載極限承載力降低了約16%，建議擴底型錨栓在地震作用下錨固承載力降低系數(shù)取0.8。 3.對膨脹型錨栓、化學錨栓及擴底型錨栓分別進行不同清孔程度、孔深偏差、以及孔徑偏差下錨栓受拉試驗，研究施工偏差對錨栓性能的影響。試驗結(jié)果表明，孔內(nèi)灰塵對三種錨栓受拉性能影響較大，其承載力均有不同幅度降低。膨脹型錨栓及擴底型錨栓在孔深減小5mm、10mm時受拉承載力均有不同程度降低，膨脹型錨栓在孔深增加5mm、10mm時的受拉承載力沒有變化，從安全角度考慮，建議將膨脹型、擴底型錨栓鉆孔深度偏差允許值由原規(guī)程規(guī)定限值+10mm調(diào)整為+5mm。M12膨脹型錨栓在孔徑正偏差小于0.3mm時受拉承載力基本不變，在孔徑正偏差為0.5mm及以上時受拉承載力降低，建議將直徑為12mm錨栓的孔徑允許偏差值由原規(guī)范規(guī)定限值0.5mm調(diào)整為0.3mm。
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圖片說明：膨脹型錨栓
[Abstract]:Post-anchoring technology refers to the technology that is connected to the existing structure by relevant technical means. Post-anchoring technology has been widely used in Europe and the United States and other countries. A large number of systematic experimental studies have been carried out, a wealth of results have been obtained, and the corresponding certification standards and specifications have been formulated. The research on post-anchoring technology in China is relatively late. In 2004, the first industry standard "Technical Specification for Post anchoring of concrete structures" JGJ145-2004 and the industry product standard "expansion type, reaming type building anchor bolt > JG160-2004." were promulgated and implemented respectively. In recent years, there are more and more applications and progress of post-anchoring technology for concrete structures. According to the development of post-anchoring technology in China and the needs of current engineering construction, the Ministry of Housing and Urban-Rural Construction issued the JGJ145-2004 revision task of "Technical Specification for Post-anchoring of concrete structures" in 2011. Combined with the revision of JGJ145-2004, the revision team carried out a series of experimental studies. In this paper, the experimental study on the seismic performance and construction allowable deviation of post-anchoring technology is part of its series of research. In this paper, the contents of the experimental research and the conclusions of the experimental research are as follows: 1. The existing research results of post-anchoring technology are summarized. The main failure states of expansion anchor bolt, expanded bottom anchor bolt, chemical anchor bolt and reinforcement planting and the main factors affecting the mechanical properties of anchor bolt are summarized. two銆

本文編號：2510379