施工技术
施工技術
시공기술
CONSTRUCTION TECHNOLOGY
2014年
22期
33-36
,共4页
管东芝%郭正兴%熊鑫鑫
管東芝%郭正興%熊鑫鑫
관동지%곽정흥%웅흠흠
预制混凝土%预应力混凝土%叠合板%钢筋桁架%翼缘加劲肋%试验研究
預製混凝土%預應力混凝土%疊閤闆%鋼觔桁架%翼緣加勁肋%試驗研究
예제혼응토%예응력혼응토%첩합판%강근항가%익연가경륵%시험연구
precast concrete%prestressed concrete%composite slab%steel bar truss%flange ribbed panels%experiments
在多种形式的预制叠合楼板基础上，提出一种带钢筋桁架翼缘板加劲的新型预应力叠合楼板；在施工工况下，对其进行了跨中有支撑和无支撑两种情况的静力加载试验研究，并分析了其施工阶段的刚度。结果表明，预制底板在有支撑和无支撑情况下均未开裂，且挠度均满足规范要求，为保证安全性，该新型预制底板短期刚度计算折减系数为0?75。
在多種形式的預製疊閤樓闆基礎上，提齣一種帶鋼觔桁架翼緣闆加勁的新型預應力疊閤樓闆；在施工工況下，對其進行瞭跨中有支撐和無支撐兩種情況的靜力加載試驗研究，併分析瞭其施工階段的剛度。結果錶明，預製底闆在有支撐和無支撐情況下均未開裂，且撓度均滿足規範要求，為保證安全性，該新型預製底闆短期剛度計算摺減繫數為0?75。
재다충형식적예제첩합루판기출상，제출일충대강근항가익연판가경적신형예응력첩합루판；재시공공황하，대기진행료과중유지탱화무지탱량충정황적정력가재시험연구，병분석료기시공계단적강도。결과표명，예제저판재유지탱화무지탱정황하균미개렬，차뇨도균만족규범요구，위보증안전성，해신형예제저판단기강도계산절감계수위0?75。
A new kind of prestressed composite slab with steel truss flange ribbed panels was developed on the basis of various existing types of precast composite slab; two static loading experiments of this slab with or without support in the mid span respectively were conducted, and the stiffness under construction condition was analyzed. Results revealed that the new?type slab didn ’ t produce any cracks no matter whether it was supported and displacements were satisfied. For ensuring safety, the reduction coefficient of short?term rigidity of the precast bottom board was suggested to be 0?75 .
