【摘要】：作為一種新型框架,約束混凝土柱組合梁框架具有自重輕抗震性能好的特點�，F(xiàn)有規(guī)范、規(guī)程對這種框架的設計、施工均無相關規(guī)定。本文對現(xiàn)澆約束混凝土柱組合梁框架節(jié)點抗震性能、節(jié)點施工技術、高強連續(xù)復合螺旋箍施工技術、裝配整體式約束混凝土柱組合梁框架預制構(gòu)件連接節(jié)點及裝配整體式框架施工技術,進行了系統(tǒng)的研究。主要研究內(nèi)容和結(jié)論如下：(1)通過擬靜力試驗,研究了在端板十節(jié)點鋼板箍約束下翼緣削弱節(jié)點的抗震性能。結(jié)果表明,端板+節(jié)點鋼板箍的約束將節(jié)點脆性剪切破壞變?yōu)檠有约羟衅茐�；�?jié)點內(nèi)鋼梁翼緣相當于壓桿-拉桿模型中的拉桿,削弱節(jié)點內(nèi)鋼梁翼緣不利于抗震,增加栓釘和補強被削弱翼緣可提高節(jié)點抗震性能,為提高節(jié)點抗震性能應完全補強翼緣；(2)采用寬端板+節(jié)點鋼板箍約束中柱節(jié)點核心區(qū)混凝土,同時提高了節(jié)點內(nèi)組合梁翼緣高度范圍箍筋體積配筋率；采用端板+節(jié)點鋼板箍約束邊柱節(jié)點核心區(qū)混凝土,節(jié)點內(nèi)組合梁翼緣高度范圍箍筋體積配筋率等同于翼緣削弱節(jié)點內(nèi)組合梁翼緣高度范圍箍筋體積配筋率,對4個寬翼緣鋼筋連接節(jié)點進行了擬靜力試驗。結(jié)果表明,寬端板+節(jié)點鋼板箍的約束效果要好于端板+節(jié)點鋼板箍的約束效果；提高中柱節(jié)點內(nèi)混凝土翼緣高度范圍箍筋體積配筋率有利于節(jié)點抗震；對于邊柱節(jié)點,在避免混凝土局部剪切破壞和局部受壓破壞情況下,端板+節(jié)點鋼板箍才能發(fā)揮對混凝土的約束作用；(3)在約束混凝土柱組合梁框架梁柱節(jié)點試驗研究的基礎上,對節(jié)點的受力機理進行了探討,提出了梁柱節(jié)點受剪承載力計算公式,公式的計算值和試驗值吻合較好且簡單實用；(4)通過2個外包鋼管+栓桿連接梁、1個現(xiàn)澆對比梁的重復加載試驗和4個外包鋼管+栓桿連接柱低周反復加載試驗,研究了接縫兩側(cè)縱筋墩頭錨固且灌漿料灌縫的外包鋼管+栓桿連接方式的性能,并分析了其受力機理。外包鋼管+栓桿連接梁未出現(xiàn)鋼筋滑移現(xiàn)象,說明鐓頭錨固性能良好；裝配整體式梁承載力和延性均好于現(xiàn)澆梁,說明外包鋼管+栓桿連接方式可靠；外包鋼管+栓桿連接柱均未在連接處破壞,延性較好,說明接縫兩側(cè)縱筋鐓頭錨固且灌漿料灌縫的外包鋼管+栓桿連接方式可靠,抗震性能較好。當柱中縱筋較密時,提出了鋼套筒錨固鋼筋的構(gòu)造措施；(5)研究了不同構(gòu)造板-板連接節(jié)點的抗剪性能,并分析了其受力機理。結(jié)果表明,板側(cè)做成齒槽形式,同時將板側(cè)的下胡子筋焊接成三角架形式,既能有效抗剪且具有較好的延性。根據(jù)試驗結(jié)果給出了板與板(梁)的連接構(gòu)造；(6)研究了現(xiàn)澆框架梁柱節(jié)點、高強連續(xù)復合螺旋箍及不需要臨時支撐的裝配整體式約束混凝土柱組合梁框架施工技術。工程實踐表明,給出的節(jié)點施工技術省時、省力,同時2種節(jié)點便于混凝土澆筑,施工現(xiàn)場反映良好；本文給出的高強連續(xù)復合螺旋箍施工技術能夠滿足施工要求且簡單、快捷,效率比綁扎普通箍筋提高2倍以上；相對于普通箍筋,使用高強箍筋能節(jié)約鋼筋50%；本文給出的裝配整體式約束混凝土柱組合梁框架的施工工藝合理,其施工速度比其它裝配整體式結(jié)構(gòu)要快50%以上。
[Abstract]:As a new frame, the constrained concrete column composite beam frame has the characteristics of good self-weight and light anti-seismic performance. The existing specifications and procedures have no relevant provisions for the design and construction of such a frame. In this paper, the seismic performance, the node construction technology, the high-strength and continuous composite spiral hoop construction technology of the cast-in-place confined concrete column composite beam frame, the connection node of the prefabricated part of the combined beam frame of the integral restrained concrete column and the construction technology of the integral frame are assembled, and the system research is carried out. The main research contents and conclusions are as follows: (1) By the quasi-static test, the anti-seismic performance of the lower wing edge weakening node at the end plate 10-node steel plate band is studied. The results show that the restraint of the end plate and the steel plate band of the node changes the brittle shear failure of the node to the ductile shear failure; the flange of the steel beam in the node is equivalent to the pull rod in the pressure rod-pull rod model, and the edge of the steel beam in the node is weakened against the earthquake resistance, in that invention, the anti-seismic performance of the node can be improve by the increase of the bolt and the reinforcement of the weakened wing, so that the anti-seismic performance of the node should be fully reinforced; (2) the concrete in the core region of the column node in a wide-end plate and a node steel plate hoop constraint is adopted, in that invention, the ratio of the volume of the stirrups in the height range of the edge of the combined beam in the node is improve; the concrete in the core area of the side column node is restrained by the end plate and the node steel plate hoop, The volume distribution of the high-range stirrup of the combined beam in the node is equivalent to that of the high-range stirrups at the edge of the combined beam in the edge-weakening node, and the quasi-static test is carried out on the four wide-edge reinforcement connecting nodes. The results show that the restraint effect of the wide end plate + node steel plate hoop is better than that of the end plate and the node steel plate hoop, in that case of avoid the local shear failure and the local pressure failure of the concrete, the end plate and the node steel plate hoop can exert the constraint effect on the concrete; and (3) the stress mechanism of the node is discussed on the basis of the test research on the beam-column node of the combined beam of the confined concrete column, The calculation formula of the shear bearing capacity of the beam-column joint is proposed, the calculated value of the formula and the test value are in good agreement with the test value, and the formula is simple and practical; (4) the repeated loading test of one cast-in-place comparison beam and the low-cycle repeated loading test of the four outer-clad steel pipe and the bolt rod connecting column are carried out through two outer-clad steel pipe + bolt-rod connecting beams, In this paper, the performance of the connecting mode of the steel tube and the bolt rod for the anchoring of the longitudinal bars on both sides of the joint and the filling of the grouting material is studied, and the mechanism of its force is also analyzed. The steel pipe of the outer bag and the connecting beam of the bolt rod do not have a steel bar sliding phenomenon, so that the anchoring performance of the steel pipe joint is good; the bearing capacity and the ductility of the assembled integral beam are good in the cast-in-place beam, and the connection mode of the outer bag steel pipe and the bolt rod is reliable; the connecting column of the outer bag steel pipe and the bolt rod is not damaged at the joint, and the ductility is good; It is indicated that the connecting mode of the steel pipe and the bolt rod of the steel pipe with the longitudinal bars on both sides of the joint and the grouting material is reliable and the anti-seismic performance is good. When the longitudinal bar in the column is dense, the construction measures of the steel sleeve anchor reinforcement are put forward; and (5) the anti-shear performance of the plate-plate connecting node of different construction plates is studied, and the stress mechanism of the steel sleeve is analyzed. The results show that the side of the plate is in the form of a groove, and the lower beards on the side of the plate are welded into the form of a tripod, which can effectively resist shear and have good ductility. The connection structure of the plate and the plate (beam) is given according to the test results; (6) the construction technology of the cast-in-place frame beam-column node, the high-strength continuous composite spiral hoop and the assembled integral-restrained concrete column combined beam without temporary support is studied. The engineering practice shows that when the node construction technology is given, the labor-saving is labor-saving, and the two nodes are convenient for concrete pouring and the construction site reflects well; the high-strength continuous composite spiral hoop construction technology provided herein can meet the construction requirements and is simple and fast, The efficiency is more than 2 times higher than that of the conventional stirrups; with respect to the regular stirrups, the use of the high-strength stirrups can save the steel bar by 50%; the construction process of the assembled integral-restrained concrete column composite beam frame is reasonable, and the construction speed is more than 50% more than that of other assembled integral structures.
【學位授予單位】：大連理工大學
【學位級別】：博士
【學位授予年份】：2015
【分類號】：TU375.4;TU755

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