摘要
通过对3m跨、6m跨1.2m板宽预应力混凝土(平板)叠合板、预应力带肋混凝土叠合板、钢筋桁架叠合板、预应力混凝土钢管桁架叠合板的对比,发现无论大小跨度,预应力混凝土钢管桁架叠合板的应用均占据显著优势。底板中施加预应力和钢管桁架的设置使预应力混凝土钢管桁架叠合板在施工阶段具有较大抗弯刚度。将底板厚度、桁架高度作为参数计算对比各种叠合板施工阶段抗弯刚度。对预应力混凝土钢管桁架叠合板,探讨钢管直径、壁厚对底板抗弯刚度、钢管长细比的影响。得出结论:预应力混凝土钢管桁架叠合板无论钢管是否灌浆在施工阶段都有较大优势,是否灌浆可根据抗弯刚度需求及施工水平确定。
By comparing the prestressed concrete(slab)composite plate,prestressed ribbed concrete composite plate,reinforced truss composite plate and prestressed concrete steel pipe truss composite plate,it is found that the application of prestressed concrete steel pipe truss composite plate has a significant advantage regardless of the span.The setting of prestress in bottom plate and steel pipe truss make prestressed concrete steel pipe truss composite plate have greater flexural stiffness in the construction stage.The floor thickness and truss height were used as parameters to calculate and compare the flexural rigidity of various composite plates during construction.The influences of diameter and wall thickness of steel tube on flexural stiffness of bottom plate and slenderness ratio of steel tube are discussed.It is concluded that the prestressed concrete steel pipe truss composite slab has great advantages in the construction stage regardless of whether the steel pipe is grouting or not.Whether the grouting can be determined according to the flexural stiffness demand and construction level.
作者
张玉明
陈丽洁
邓馨雨
程意
ZHANG Yu-ming;CHEN Li-jie;DENG Xin-yu;CHENG Yi(School of Civil Engineering,Shandong Jianzhu University,250101,Ji'nan,China;Engineering Research Institute of Appraisal and Strengthening,Shandong Jianzhu University,250013,Ji'nan,China)
出处
《建筑技术》
2023年第11期1354-1358,共5页
Architecture Technology
关键词
钢管桁架
叠合板
预应力混凝土
抗弯刚度
steel pipe truss
composite plate
prestress concrete
flexural stiffness
