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防撞墙是桥梁的一种安全防护设施
防撞墙是桥梁的一种安全防护设施,由于防撞墙位于桥面系,处于桥梁最直观的位置,因而对其几何尺寸、表面光洁度、平整度等各项质量指标要求比较高。但防撞墙下部蹄形部位呈特殊的反弧形,在施工浇筑过程中蹄部前侧面气泡极难排出,拆模后往往出现较为密集的大小气泡,同时因在安装后的悬空板上现浇,给立模带来很大的难度,模板的接缝部位和底部常常由于漏浆出现蜂窝麻面等表面缺陷,这些也一直困扰着施工和监理人员。结合工程实际,本文对防撞墙的质量控制进行浅要分析。
The anti-collision wall is a kind of safety protection facilities of the bridge. Because the anti-collision wall is located in the bridge deck system and in the most intuitive position of the bridge, the requirements for its geometric size, surface finish, flatness and other quality indicators are relatively high. However, the foot-shaped part of the lower part of the anti-collision wall has a special anti arc shape. During the construction and pouring process, the bubbles on the front side of the hoof are very difficult to discharge. After the formwork is removed, there are often dense bubbles of large and small size. At the same time, due to the cast-in-place casting on the suspended slab after installation, it is very difficult to erect the formwork. The surface defects such as honeycomb and pockmarked surface often appear at the joints and bottom of the formwork due to slurry leakage Construction and supervision personnel. Combined with the engineering practice, this paper analyzes the quality control of the anti-collision wall.
1 模板的安装
1. Installation of formwork
用于防撞墙的模板不宜采用小块组合式钢模板,而应采用大块钢模板。这是因为模板越小, 接缝越多,外观越差,而且接缝处表面不易平整,也易出现漏浆现象。控制钢筋保护层厚度 可使用小石块来填隔钢筋,不宜采用混凝土垫块,以免在拆模后墙体表面出现一块块难看的斑痕,立模时,在防撞墙侧模的顶部与底部分别安装一根用槽钢制作的横带螺丝杆聚氨酯软管 PVC软管 隔离墩模具 u型槽模具 护坡模具 pvc输送带 尼龙输送带 天津除甲醛 北京除甲醛 固定。然后,在两侧的槽钢上均匀地安装几根钢支撑杆,使模板的整体得到固定。
The small combined steel formwork should not be used for the formwork of the anti-collision wall, but the large steel formwork should be used. This is because the smaller the formwork, the more joints, the worse the appearance, and the surface of the joint is not easy to be flat, and also prone to leakage. To control the thickness of the protective layer of the reinforcement, small stones can be used to fill the steel bar, and the concrete cushion block should not be used, so as to avoid the unsightly spots on the wall surface after the formwork removal. When erecting the formwork, a transverse belt screw rod made of channel steel shall be installed at the top and bottom of the side formwork of the anti-collision wall for fixation. Then, several steel supporting rods are evenly installed on the channel steel on both sides to fix the whole formwork

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  1. 公司名称:保定防撞墙模具厂
  2. 手机:13313028229

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