本文選題：剪力墻體系 + 夾心保溫墻�。� 參考：《湖南大學(xué)》2015年碩士論文

【摘要】：針對目前建筑工程中常見各類保溫墻體做法的一些局限性,本文提出一種新型現(xiàn)澆夾心保溫剪力墻。現(xiàn)澆夾心保溫剪力墻(以下簡稱夾心墻)由外側(cè)混凝土層、夾心保溫層、內(nèi)側(cè)鋼筋混凝土結(jié)構(gòu)層和連接件構(gòu)成。保溫板上開有孔洞,兩側(cè)混凝土在孔洞處形成混凝土短柱,短柱和內(nèi)部加強筋共同構(gòu)成夾心墻連接件。兩側(cè)混凝土層在連接件的作用下協(xié)同受力,共同承擔(dān)豎向和水平荷載;為了確保其保溫效果,在保溫板孔洞處設(shè)置隔熱片,隔斷孔洞處的冷橋。該夾心墻兼具了保溫、承重功能,滿足了當今建筑在節(jié)能設(shè)計方面的要求。本文對3片夾心墻體試件進行了恒定豎向荷載和水平荷載共同作用下的壓彎受力性能試驗,運用ABAQUS有限元分析程序?qū)A心墻的壓彎試驗進行了模擬和相關(guān)影響參數(shù)分析。最后對夾心墻的施工工藝提出了優(yōu)化設(shè)計,改進了連接件的做法,并針對改進后的連接件進行了連接件剪切承載力試驗。夾心墻的壓彎性能試驗表明:3個試件在固定豎向力(軸壓比為0.1)和水平力的共同作用下均發(fā)生壓彎破壞,受力過程和極限承載力基本相同,試件設(shè)計的變化參數(shù)(連接件布置、隔熱片設(shè)置)對其壓彎受力性能沒有影響;兩側(cè)混凝土層在加載過程中變形協(xié)調(diào)一致,共同受力;可以按照我國現(xiàn)行《高規(guī)》中的剪力墻計算公式對試件的壓彎承載力進行計算。ABAQ US有限元計算和參數(shù)分析表明:模擬計算得到的試件荷載-位移曲線、破壞形態(tài)和極限承載力與試驗結(jié)果基本吻合;夾心墻的受彎承載力隨著試件軸壓比、墻體混凝土強度、豎向分布鋼筋強度的增大而增大,隨著墻體剪跨比的增大而減小,連接件的間距尺寸、橫向分布鋼筋的強度則對夾心墻承載力沒有影響。為了簡化施工工藝,改用噴涂砂漿的施工方法進行夾心墻外側(cè)的施工,同時改進了墻體混凝土的澆筑方式和連接件的做法。新型連接件的剪切性能試驗表明:在接觸面錯動位移作用下,連接件處的砂漿短柱承擔(dān)了主要的剪切荷載,剪切承載力能夠滿足工程設(shè)計、使用的要求。本文的研究可以為該現(xiàn)澆夾心保溫剪力墻的施工方法、壓彎承載力的設(shè)計提供一定理論依據(jù)和建議。
[Abstract]:In view of the limitations of various kinds of insulation wall in building engineering at present, a new type of cast-in-place sandwich insulation shear wall is proposed in this paper. The cast-in-place sandwich thermal insulation shear wall (hereinafter referred to as the sandwich wall) consists of the outer concrete layer, the sandwich insulation layer, the inner reinforced concrete structure layer and the connectors. There are holes in the insulation board, and concrete short columns are formed at the holes on both sides of the concrete. The short columns and the internal reinforcement bars together form the sandwich wall connectors. In order to ensure the thermal insulation effect, the insulation sheet is arranged at the hole of the insulation plate to separate the cold bridge at the hole of the insulation plate. The sandwich wall has the function of heat preservation and load bearing, which meets the requirements of energy-saving design of today's buildings. In this paper, three specimens of sandwich wall are tested under the action of constant vertical load and horizontal load. The finite element analysis program Abaqus is used to simulate the compression and bending test of sandwich wall and the related influence parameters are analyzed. Finally, the optimum design of the construction technology of the sandwich wall is put forward, and the method of connection is improved, and the shear bearing capacity test of the joint is carried out for the improved joint. The compression and bending behavior tests of the sandwich wall show that the three specimens are subjected to compression and bending failure under the combined action of fixed vertical force (axial compression ratio 0.1) and horizontal force, and the stress process is basically the same as the ultimate bearing capacity. There is no effect on the compression and bending behavior of the two sides of concrete layer, the deformation of both sides of the concrete layer is consistent during the loading process, and the common force is shared. According to the calculation formula of shear wall in China's current "High gauge", the load-displacement curve of specimen obtained by simulation calculation can be calculated by means of finite element calculation and parameter analysis of ABAQ US. The failure mode and ultimate bearing capacity of the sandwich wall are basically consistent with the test results, the flexural capacity of the sandwich wall increases with the increase of the axial compression ratio of the specimen, the strength of the wall concrete and the strength of the vertical distributed steel bar, and decreases with the increase of the shear span ratio of the wall. The size of the joint spacing and the strength of the transverse distribution bar have no effect on the bearing capacity of the sandwich wall. In order to simplify the construction technology, the construction method of sprayed mortar is used to construct the outside of the sandwich wall, and the pouring mode of wall concrete and the method of connecting parts are improved at the same time. The shear behavior test of the new type joint shows that under the action of the dislocation displacement of the contact surface, the mortar short column at the connecting part bears the main shear load, and the shear bearing capacity can meet the requirements of engineering design and application. The research in this paper can provide some theoretical basis and suggestions for the construction method of the cast-in-place sandwich heat preservation shear wall and the design of the compression and bending bearing capacity.
【學(xué)位授予單位】：湖南大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TU398.2

【參考文獻】

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本文編號：1995206