长春工程学院学报(自然科学版)
長春工程學院學報(自然科學版)
장춘공정학원학보(자연과학판)
JOURNAL OF CHANGCHUN INSTITUTE OF TECHNOLOGY(NATURAL SCIENCE EDITION)
2015年
1期
30-33,41
,共5页
预应力叠合板%钢筋桁架%现浇空心板
預應力疊閤闆%鋼觔桁架%現澆空心闆
예응력첩합판%강근항가%현요공심판
prestressed composite slab%steel bar truss%cast-in-situ hollow slab
针对预应力叠合板工程应用中两方面的问题进行了研究:一方面通过增设钢筋桁架增加叠合前预应力薄板的刚度和承载力以增加其适用跨度;另一方面通过钢筋桁架提高预应力薄板和后浇混凝土交接面的抗剪承载力,并利用空心成孔管减轻叠合板自重。首先通过理论分析提出了新型叠合板在叠合前的刚度和承载力计算公式,通过足尺模型试验验证了钢筋桁架提高预应力薄板刚度和承载力的效果,并初步验证了理论分析所得刚度和承载力公式的可靠性。
針對預應力疊閤闆工程應用中兩方麵的問題進行瞭研究:一方麵通過增設鋼觔桁架增加疊閤前預應力薄闆的剛度和承載力以增加其適用跨度;另一方麵通過鋼觔桁架提高預應力薄闆和後澆混凝土交接麵的抗剪承載力,併利用空心成孔管減輕疊閤闆自重。首先通過理論分析提齣瞭新型疊閤闆在疊閤前的剛度和承載力計算公式,通過足呎模型試驗驗證瞭鋼觔桁架提高預應力薄闆剛度和承載力的效果,併初步驗證瞭理論分析所得剛度和承載力公式的可靠性。
침대예응력첩합판공정응용중량방면적문제진행료연구:일방면통과증설강근항가증가첩합전예응력박판적강도화승재력이증가기괄용과도;령일방면통과강근항가제고예응력박판화후요혼응토교접면적항전승재력,병이용공심성공관감경첩합판자중。수선통과이론분석제출료신형첩합판재첩합전적강도화승재력계산공식,통과족척모형시험험증료강근항가제고예응력박판강도화승재력적효과,병초보험증료이론분석소득강도화승재력공식적가고성。
This research aims at two problems in application of prestressed composite slab.One is to add steel bar trusses to increase stiffness and bearing capacity of prestress thin slab,and to increase the suitable span.The other is to use steel bar truss to increase shear strength of the interface between prestressed thin slab and after pouring concrete,and by using hollow pipe to reduce the weight of the composite slab.First-ly,the stiffness and bearing capacity calculation formulas of the new composite slab before composition are be derived from the theoretic analysis.Then,based on the full-scale model test,the effects of steel bar truss are proved to increasing stiffness and bearing capacity,and the reliability of the formulas are verified.