论文部分内容阅读
我国自五十年代以来,常用的楼板是预应力多孔板。几十年来,多孔板在生产、使用及制作等方面,都已被设计单位、施工单位、预制构件厂以及建设单位所接受。近年来,由于地震设防区的建筑对楼板有较高的要求,同时农村经济形势好转,广大农民迫切需要兴建楼房,从而对建筑物楼盖形式提出了许多新的要求。诸如在地震区要求楼板有可靠的支承和楼盖的整体性要好,以提高房屋的抗震性能。在农村一般施工队,施工机具较少,更无吊装机具,当施工楼房时,预制构件的架设,全凭肩扛人抬,劳动强度大。同时,目前的农村道路尚不适应运输如多孔板之类的构件。为了解决上述问题,我们于1983年起研究空心砖小梁楼板。空心砖小梁楼板是由预应力倒T形小梁和楼板空心砖组合,然后浇筑混凝土面层,组成一种
In China since the 1950s, the commonly used floor slabs are prestressed porous plates. For decades, the production, use, and production of porous plates have been accepted by design units, construction units, prefabricated component plants, and construction units. In recent years, due to the high requirements of the buildings in the seismic fortification areas and the improvement of the economic situation in rural areas, the vast number of peasants urgently need to build buildings, thus putting forward many new requirements for the form of buildings. In the seismic zone, for example, it is required that the floor has reliable support and the integrity of the floor cover is better to improve the seismic performance of the house. In the general construction team in rural areas, there are fewer construction machines and there are no hoisting equipment. When building a building, the erection of prefabricated components is carried out by people on the shoulders and labor intensity is high. At the same time, current rural roads are not yet suitable for transporting components such as porous plates. In order to solve the above problems, we have studied the hollow brick trabecular floor since 1983. The hollow brick girder floor is composed of prestressed inverted T-shaped trabecules and floor hollow bricks, and then poured concrete to form a kind of