發(fā)布時(shí)間：2018-01-31 20:22

  本文關(guān)鍵詞： 裝配式 框架剪力墻結(jié)構(gòu) 柱-墻連接 梁-墻連接 壓剪試驗(yàn)　出處：《沈陽建筑大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

【摘要】：為提高裝配式框架-剪力墻結(jié)構(gòu)的預(yù)制化率,對(duì)裝配式框架-剪力墻結(jié)構(gòu)中預(yù)制構(gòu)件的連接性能進(jìn)行研究。本文針對(duì)預(yù)制柱-墻連接和預(yù)制梁-墻連接進(jìn)行了研究。首先,針對(duì)柱-墻連接,本文提出了U型筋連接、直型筋連接、連環(huán)扣連接和直U型筋連接四種預(yù)制柱-預(yù)制墻的連接構(gòu)造方案,設(shè)計(jì)并制作六個(gè)S型試件,一個(gè)現(xiàn)澆式試件,四個(gè)設(shè)置鍵槽采用不同連接方式和一個(gè)不設(shè)置鍵槽采用U型筋連接方式的裝配式試件,為研究柱-墻連接區(qū)域的剪切性能,試件進(jìn)行壓剪試驗(yàn)。對(duì)試件在豎向重復(fù)循環(huán)荷載作用下的開裂及破壞形態(tài)、滯回特性、骨架曲線、特征荷載、特征位移和鋼筋應(yīng)變情況進(jìn)行了系統(tǒng)研究。結(jié)果表明：設(shè)置鍵槽的裝配式試件與現(xiàn)澆試件的破壞形態(tài)大致相同,四種連接方式都是可行的,其中連環(huán)扣連接和直U型筋連接兩種試件的變形和裂縫分布最好,承載力最高；不設(shè)置鍵槽的裝配式試件相比設(shè)置鍵槽的試件承載能力大幅降低,破壞也較突然。其次,針對(duì)梁-墻連接,為研究裝配式框架-剪力墻結(jié)構(gòu)中梁-墻的套筒連接性能,本文針對(duì)雙排直筋貫通現(xiàn)澆、等代鋼筋貫通現(xiàn)澆和等待鋼筋套筒連接裝配三種梁-墻連接方式,設(shè)計(jì)并制作三種六個(gè)S型試件。通過壓剪試驗(yàn),研究梁-墻連接區(qū)域的剪切性能,壓剪試驗(yàn)中還考慮了連接面壓應(yīng)力的影響。對(duì)試件在豎向重復(fù)循環(huán)荷載作用下的開裂及破壞形態(tài)、循環(huán)特性、骨架曲線、特征荷載、特征位移和鋼筋應(yīng)變情況進(jìn)行了系統(tǒng)研究。結(jié)果表明：等代鋼筋貫通現(xiàn)澆試件具有更好的承載能力；等代鋼筋套筒連接裝配試件的承載能力相對(duì)較差；設(shè)置軸壓比能夠使試件的抗剪能力得到很大程度的提高,且試件的變形和裂縫分布也相對(duì)較好。然后,運(yùn)用WCOMD有限元分析軟件對(duì)這2組12個(gè)試件進(jìn)行了非線性有限元分析,模擬分析的結(jié)果與試驗(yàn)的結(jié)果基本相符,驗(yàn)證了WCOMD有限元分析的可行性和可靠性,并且在這基礎(chǔ)之上,對(duì)試件的各因素進(jìn)行簡單分析。最后,參照以往國內(nèi)外參考文獻(xiàn)中提出的相關(guān)抗剪強(qiáng)度計(jì)算公式,分析并提取與本課題研究相關(guān)的重要因素,擬合出裝配式梁柱與墻結(jié)合面的抗剪強(qiáng)度簡化計(jì)算公式,且根據(jù)試驗(yàn)數(shù)據(jù)驗(yàn)證了計(jì)算公式的可行性。
[Abstract]:In order to improve prefabrication rate of prefabricated frame-shear wall structure. The connection performance of prefabricated members in prefabricated frame-shear wall structures is studied. The prefabricated column-wall connections and prefabricated beam-wall connections are studied in this paper. In this paper, four kinds of prefabricated column-precast wall construction schemes are proposed, including U-type steel connection, straight reinforcement connection, serial buckle connection and straight U-type reinforcement connection. Six S-type specimens and one cast-in-place specimen are designed and made. Four prefabricated specimens with different connection modes and one unset keyway with U-shaped tendons were used to study the shear behavior of the column-wall connection area. The cracking and failure patterns, hysteretic characteristics, skeleton curves and characteristic loads of the specimens under vertical repeated cyclic loading were investigated. The characteristic displacement and the strain of steel bar are studied systematically. The results show that the failure pattern of the assembled specimen with keyway is about the same as that of the cast-in-place specimen, and the four connection modes are feasible. The deformation and crack distribution of the two specimens are the best and the bearing capacity is the highest. The load-carrying capacity of the assembled specimen without keyway is significantly lower than that of the specimen with the keyway, and the damage is also sudden. Secondly, the beam-wall connection is aimed at the beam-wall connection. In order to study the behavior of sleeve connection between beam and wall in prefabricated frame-shear wall structure, this paper aims at three kinds of beam-wall connection modes: double-row straight reinforcement through cast-in-situ, equal generation steel bar through cast-in-situ and waiting for reinforcement sleeve to connect and assemble. Three kinds of six S-shaped specimens were designed and made. The shear behavior of beam-wall connection region was studied by compression shear test. In the compression shear test, the influence of compressive stress on the connection surface is also taken into account. The cracking and failure patterns, cyclic characteristics, skeleton curves and characteristic loads of the specimens under the vertical repeated cyclic load are also considered. The characteristic displacement and the strain of steel bar are studied systematically. The results show that the equivalent steel bar through the cast-in-place specimen has better bearing capacity; The load-carrying capacity of the same generation steel sleeve assembly specimen is relatively poor. Setting axial compression ratio can greatly improve the shear resistance of the specimen, and the deformation and crack distribution of the specimen is relatively good. Then. The nonlinear finite element analysis of these two groups of 12 specimens is carried out by using WCOMD software. The results of simulation analysis are in good agreement with the experimental results. The feasibility and reliability of WCOMD finite element analysis are verified, and on the basis of this, the factors of the specimen are analyzed simply. Finally. Referring to the relevant formulas of shear strength which have been put forward in the previous references at home and abroad, the important factors related to this research are analyzed and extracted, and the simplified formula of shear strength of assembled Liang Zhu and wall joint surface is fitted out. The feasibility of the formula is verified according to the experimental data.
【學(xué)位授予單位】：沈陽建筑大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TU756

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