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鋼管混凝土邊框連接裝置及力學(xué)性能研究

發(fā)布時(shí)間:2018-05-14 10:09

  本文選題:裝配式建筑 + 組合結(jié)構(gòu) ; 參考:《河北聯(lián)合大學(xué)》2014年碩士論文


【摘要】:鋼管混凝土節(jié)點(diǎn)連接設(shè)計(jì)及性能的優(yōu)劣直接影響預(yù)制鋼管混凝土剪力墻結(jié)構(gòu)體系整體抗震性能和推廣應(yīng)用。預(yù)制鋼管混凝土剪力墻結(jié)構(gòu)體系是一種適合于工業(yè)化生產(chǎn)、以現(xiàn)場(chǎng)裝配為基礎(chǔ)的新型高層建筑結(jié)構(gòu)體系,是基于建筑節(jié)能減排和住宅產(chǎn)業(yè)化發(fā)展及要求進(jìn)行研發(fā)的。課題來源于國(guó)家自然科學(xué)基金:預(yù)制鋼管混凝土邊框剪力墻及其力學(xué)性能研究(51278164)。文中通過研究設(shè)計(jì)出套筒式連接(濕連接)和機(jī)械連接(干連接)兩種類型,并以此為研究對(duì)象,通過試驗(yàn)研究和數(shù)值分析不同類型鋼管混凝土節(jié)點(diǎn)連接裝置的力學(xué)性能和破壞特征。 針對(duì)套筒式連接方式,共進(jìn)行了2個(gè)節(jié)點(diǎn)直剪性能試驗(yàn)和1片采用該方式連接的鋼管混凝土墻板試驗(yàn)。由于套筒式連接中套筒對(duì)高強(qiáng)灌漿料的三向約束,力學(xué)性能發(fā)揮充分,有效實(shí)現(xiàn)力的傳遞,且具有無需現(xiàn)場(chǎng)焊接、施工方便、延性好等特點(diǎn),試驗(yàn)結(jié)果和基于ABAQUS軟件的有限元分析表明,該連接方式傳力明確、安全可靠,施工簡(jiǎn)便,優(yōu)先建議采用該類型實(shí)現(xiàn)鋼管混凝土節(jié)點(diǎn)的連接。 對(duì)于機(jī)械連接方式,分為單卡槽和雙卡槽兩種,各進(jìn)行1個(gè)連接試件進(jìn)行試驗(yàn)研究和數(shù)值分析。該連接方式屬于干連接,依靠卡槽接觸實(shí)現(xiàn)力的傳遞,試驗(yàn)結(jié)果表明,該連接方式表現(xiàn)出良好的力學(xué)性能,,且具有連接可靠、傳力明確等特點(diǎn)。同時(shí)該連接要求施工精度高,否則卡槽接觸不良而影響整體連接性能。因此,根據(jù)實(shí)際工程要求采用該連接類型。 在試驗(yàn)研究和有限元分析基礎(chǔ)上,提出鋼管混凝土節(jié)點(diǎn)連接設(shè)計(jì)建議:進(jìn)一步對(duì)套筒式連接方式進(jìn)行多變化參數(shù)試驗(yàn)或數(shù)值分析,以便優(yōu)化連接設(shè)計(jì),更好應(yīng)用于裝配式鋼管混凝土組合剪力墻結(jié)構(gòu)設(shè)計(jì)中。
[Abstract]:The joint design and performance of concrete-filled steel tubular (CFST) joints directly affect the seismic behavior of precast CFST shear wall structure system and its popularization and application. Precast concrete filled steel tubular shear wall structure system is a new type of high-rise building structure system which is suitable for industrial production and based on field assembly. It is based on building energy saving and emission reduction and the development and requirement of housing industrialization. The subject comes from the National Natural Science Foundation: precast concrete filled steel tube frame shear wall and its mechanical properties. In this paper, two types of sleeve connection (wet connection) and mechanical connection (dry connection) are designed. The mechanical properties and failure characteristics of different types of concrete-filled steel tubular joints are studied and numerically analyzed. In view of the sleeve connection, two joint direct shear tests and one concrete filled steel tube wall board test were carried out. Because of the three-way constraint of sleeve to high-strength grouting material in sleeve connection, the mechanical properties play a full role, the transfer of force is realized effectively, and it has the characteristics of no spot welding, convenient construction, good ductility and so on. The test results and finite element analysis based on ABAQUS software show that the connection mode is clear, safe and reliable, and easy to construct. It is recommended that the connection of concrete-filled steel tubular joints should be realized by this type of joint. For mechanical connection, there are two types of mechanical connection: single slot and double slot. One connection specimen is tested and analyzed numerically. The connection mode belongs to the dry connection and the force transfer is realized by the contact of the slot. The test results show that the connection mode has good mechanical properties and has the characteristics of reliable connection and clear transmission. At the same time, the connection requires high construction precision, otherwise the poor contact of the slot affects the overall performance of the connection. Therefore, according to the actual engineering requirements to adopt this type of connection. On the basis of experimental research and finite element analysis, the paper puts forward some suggestions for joint design of concrete-filled steel tube (CFST) joints: further multi-variable parameter tests or numerical analysis are carried out to optimize the connection design. It is better applied in the structural design of assembled concrete filled steel tube (CFST) composite shear wall.
【學(xué)位授予單位】:河北聯(lián)合大學(xué)
【學(xué)位級(jí)別】:碩士
【學(xué)位授予年份】:2014
【分類號(hào)】:TU398.9

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