【摘要】：隨著經(jīng)濟(jì)、人口的快速發(fā)展,人們對(duì)于建筑的需求越來越多�，F(xiàn)代社會(huì),建筑物的數(shù)量逐漸增加,其高度也不斷提高,所以"輕質(zhì)高強(qiáng)"是目前建筑追求的目標(biāo)之一。因此本文提出了采用配有高強(qiáng)復(fù)合箍筋的微鋼纖維水泥基復(fù)合材料方形柱,從結(jié)構(gòu)、材料兩個(gè)方面來改善方柱的強(qiáng)度、延性、變形性能的新觀點(diǎn)。本文一共設(shè)計(jì)了 18個(gè)方形柱試件,有如下幾種分組對(duì)比方式:按微鋼纖維體積分?jǐn)?shù)摻量可以分為0%、1%、2%,各占1/3;按箍筋間距可以分為100mm、70mm、40mm,各占1/3;按水泥基復(fù)合材料強(qiáng)度等級(jí)可以分為C30、C40,各占1/2。通過對(duì)方柱試件的軸心受壓試驗(yàn),分析了微鋼纖維的摻量、高強(qiáng)復(fù)合箍筋的間距、水泥基復(fù)合材料的強(qiáng)度等級(jí)對(duì)配有高強(qiáng)復(fù)合箍筋的微鋼纖維水泥基復(fù)合材料方柱的承載力以及試件的變形性能的影響。配有高強(qiáng)復(fù)合箍筋的微鋼纖維水泥基復(fù)合材料方形柱的軸心受壓試驗(yàn)表明:微鋼纖維可以有效地提高水泥基復(fù)合材料的變形性能,能很大程度地改善保護(hù)層破壞情況;高強(qiáng)復(fù)合箍筋減小間距可以高效地提高柱的承載力、變形性能、延性;達(dá)到峰值荷載時(shí)微鋼纖維水泥基復(fù)合材料開始破壞,縱筋達(dá)到屈服強(qiáng)度,高強(qiáng)復(fù)合箍筋達(dá)不到屈服強(qiáng)度;采用水泥基復(fù)合材料較高的配合比強(qiáng)度等級(jí),柱試件強(qiáng)度較高,但延性、變形性能、箍筋發(fā)揮情況比水泥基復(fù)合材料配合比強(qiáng)度等級(jí)較低的差;采用水泥基復(fù)合材料較低的配合比強(qiáng)度等級(jí),更便于觀察各個(gè)因素的變化對(duì)柱試件性能的影響效果。通過分析試驗(yàn)數(shù)據(jù)、參考經(jīng)驗(yàn)公式,從理論上推導(dǎo)了配有高強(qiáng)復(fù)合箍筋的微鋼纖維水泥基復(fù)合材料方形柱的承載力公式、微鋼纖維水泥基復(fù)合材料的強(qiáng)度公式、高強(qiáng)復(fù)合箍筋約束微鋼纖維水泥基復(fù)合材料作用力公式、縱筋應(yīng)力-應(yīng)變公式、箍筋應(yīng)力-應(yīng)變公式。
[Abstract]:With the rapid development of economy and population, people need more and more buildings. In modern society, the number of buildings is increasing gradually, and the height of buildings is also increasing, so "light weight and high strength" is one of the aims of architecture at present. In this paper, a new viewpoint of improving the strength, ductility and deformation properties of square columns by using square columns with high strength composite stirrups is put forward. A total of 18 square column specimens were designed in this paper. According to the volume fraction of micro-steel fiber, it can be divided into 0 and 1 / 2, each of them accounts for 1 / 3; according to the distance of stirrups, it can be divided into 100 mm and 70 mm / 40 mm, each of which can be divided into 1 / 3; according to the strength grade of cement matrix composite material, it can be divided into C _ (30) C _ (40), accounting for 1 / 2 / 2. Through the axial compression test of square column specimen, the content of micro steel fiber and the spacing of high strength composite stirrups are analyzed. The influence of strength grade of cement matrix composites on the bearing capacity and deformation properties of square columns of micro-steel fiber cement composites with high strength composite stirrups. The axial compression test of square columns of microsteel fiber cement matrix composites with high strength composite stirrups shows that micro steel fibers can effectively improve the deformation properties of cement matrix composites and greatly improve the failure of the protective layer. Reducing the spacing of high strength composite stirrups can effectively improve the bearing capacity, deformation performance and ductility of columns, and when the peak load is reached, the micro-steel fiber cement matrix composites begin to destroy, the longitudinal reinforcement reaches the yield strength, and the high strength composite stirrups do not reach the yield strength. The strength of column specimens is higher than that of cement based composites, but the ductility, deformation properties and stirrups play are lower than those of cement based composites. It is more convenient to observe the effect of various factors on the properties of column specimens by using the lower strength grade of cement matrix composites. By analyzing the test data and referring to the empirical formula, the formula of bearing capacity of square columns with high strength composite stirrups and the formula of strength of micro-steel fiber cement matrix composites are derived theoretically. High strength composite stirrups confined micro-steel fiber cement matrix composite material force formula, longitudinal reinforcement stress-strain formula, stirrups stress-strain formula.
【學(xué)位授予單位】：安徽理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TB33

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 張宇;金祖權(quán);劉影;吳運(yùn)超;;超細(xì)鋼纖維增強(qiáng)粉煤灰水泥基材料的力學(xué)性能和干縮研究[J];混凝土;2016年03期

2 徐鑫;李升才;;密置焊接高強(qiáng)復(fù)合箍筋約束高強(qiáng)混凝土柱的試驗(yàn)[J];華僑大學(xué)學(xué)報(bào)(自然科學(xué)版);2014年06期

3 趙作周;張石昂;賀小崗;錢稼茹;;箍筋約束高強(qiáng)混凝土受壓應(yīng)力-應(yīng)變本構(gòu)關(guān)系[J];建筑結(jié)構(gòu)學(xué)報(bào);2014年05期

4 史慶軒;王南;田園;王朋;李坤;;高強(qiáng)箍筋約束高強(qiáng)混凝土軸心受壓應(yīng)力-應(yīng)變?nèi)�研究[J];建筑結(jié)構(gòu)學(xué)報(bào);2013年04期

5 史慶軒;楊坤;劉維亞;張興虎;姜維山;;高強(qiáng)箍筋約束高強(qiáng)混凝土軸心受壓力學(xué)性能試驗(yàn)研究[J];工程力學(xué);2012年01期

6 彭毅;應(yīng)文宗;高長成;王龍飛;;熔抽型超細(xì)鋼纖維對(duì)水泥砂漿性能的影響[J];混凝土;2011年10期

7 司炳君;胡鐘;孫治國;王東升;;高強(qiáng)箍筋約束高強(qiáng)混凝土柱在軸壓下的力學(xué)性能研究綜述[J];混凝土;2010年11期

8 孫治國;司炳君;王東升;于德海;;高強(qiáng)箍筋高強(qiáng)混凝土柱約束箍筋用量研究[J];工程力學(xué);2010年10期

9 張廷毅;高丹盈;;鋼纖維高強(qiáng)混凝土抗壓強(qiáng)度影響因素[J];混凝土;2009年07期

10 王沖;Liza O′Moore;;超高強(qiáng)微鋼纖維增韌混凝土的制備及其力學(xué)性能研究[J];土木工程學(xué)報(bào);2009年06期

相關(guān)碩士學(xué)位論文 前1條

1 馮永偉;高強(qiáng)混凝土高強(qiáng)連續(xù)復(fù)合螺旋箍筋柱抗剪性能的研究[D];西安建筑科技大學(xué);2004年

，

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