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为使水磨石地面增加美观,避免裂缝,在施工中一般用玻璃条或铜条有规则的分格排列,嵌入地面。但有些部位的水磨石地面,虽然有嵌条,还会出现裂缝。如某单位二楼会议室的水磨石地面,靠近大梁平行方向就出现一条通长的裂缝。这是什么原因呢?这种裂缝多出在大梁上部楼板端头处。楼板受荷载后呈正弯矩,而楼板和梁交接处是负弯矩,随着楼板上荷载的增减,梁和楼板交接
In order to increase the appearance of the terrazzo floor and avoid cracks, the glass strips or copper strips are generally arranged in a regular grid and embedded in the ground. However, in some parts of the terrazzo floor, there are cracks even though there are fillets. For example, on the terrazzo floor of the meeting room on the second floor of a unit, there is a long crack in the direction parallel to the girder. What is the reason for this? This crack is more on the upper floor of the girder. After the slab is loaded, it has a positive bending moment, and the junction between the slab and the beam is a negative bending moment. With the increase or decrease of the load on the floor, the beam and the floor are transferred.