孫林+黃輝輝+楊俊杰+傅劍平+黃宗明



摘要:在高層建筑結(jié)構(gòu)設(shè)計中,由于上部荷載較大或梁的跨度較大,使得梁的截面高度較高,通常會影響建筑的有效層高和建筑的總體高度。為了減小各層梁板結(jié)構(gòu)高度,有效增大各層凈高,提出了一種鋼箱梁嵌入現(xiàn)澆板的新型組合梁板連接方式。針對這種新型連接方式,對6個鋼箱梁混凝土板組合連接區(qū)域進行了板承受支座負彎矩的單調(diào)加載試驗,對比分析了采用鋼箱梁嵌入混凝土板組合樓蓋與傳統(tǒng)栓釘連接組合樓蓋中板抵抗支座負彎矩的性能差異;并利用ABAQUS對試件進行了有限元分析。試驗與有限元分析結(jié)果表明:采用鋼箱梁嵌入板連接組合方式,其混凝土板抵抗支座負彎矩的能力與傳統(tǒng)連接方式板抵抗支座負彎矩能力沒有明顯差異。
關(guān)鍵詞:組合結(jié)構(gòu);嵌入式連接;抗彎性能;延性
中圖分類號:TU375.2文獻標志碼:A文章編號:16744764(2017)03003509
Abstract:In structural design of highrise buildings, due to large upper loads or span, the beam section height is large, which usually affects the effective story height and the total height of building. To reduce the height of beamslab structure and increase the clearance height of each floor effectively, a new connection method of composite beamslab structure with steelbox beam embedded was proposed. As for the new connection method, monotonic loading tests were carried out on composite connection area of six steelconcrete slabs with steelbox beam embedded, to study the negative moment resistant. The difference in negative moment resistant capacity between the concrete composite floor with steelbox beam embedded and the concrete composite floor with traditional stud connection was analyzed. The finite element analysis was carried out by using ABAQUS. Experimental results and finite element analysis show that, as for the connection method of composite beamslab with steelbox beam embedded, the negative moment resistant capacity of concrete slab has no significantly difference with the concrete slab with traditional stud connection.
Keywords:composite structure; embedded connection; flexural behavior; ductility
鋼混凝土組合結(jié)構(gòu)已廣泛應(yīng)用于高層、超高層建筑結(jié)構(gòu)以及橋梁結(jié)構(gòu)等領(lǐng)域。在建筑工程中應(yīng)用較為廣泛的鋼梁混凝土板組合樓蓋是一種常用的組合樓蓋形式,鋼梁和混凝土樓板之間設(shè)置抗剪連接件將二者連接成為一個整體而協(xié)同工作。
Viest [1]對栓釘抗剪連接件進行了研究,提出了栓釘?shù)目辜襞R界值。Slutter等[2]對完全抗剪連接的組合梁進行了研究,單獨對抗剪連接件進行了推出試驗,提出了鋼混凝土組合梁極限抗彎強度的計算方法。Johnson等[3]對部分抗剪連接的組合梁進行了試驗研究,根據(jù)試驗結(jié)果和前人研究的理論計算,提出了部分抗剪連接的組合梁的抗彎強度及其撓度的計算方法。……