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保定受益匪浅啊!原来桥梁支座的螺栓要这样安装!

浏览:752 发表时间:2019-03-04

受益匪浅啊!原来桥梁支座的螺栓要这样安装!衡水振瑞橡胶制品有限公司,经过多年的施工经验,得出以下科学论证:为了将盆式支座固定,就需要用到桥梁支座用的螺栓,通常支座上的螺栓是这样固定的:

1、墩台顶凿毛清理。当采用补偿收缩砂浆固定支座时,应用铁錾对桥梁支座支承面进行凿毛,凿毛程度满足"桥梁混凝土施工工艺标准"关于施工缝处理的有关规定,并将顶面清理干净;当采用环氧砂浆固定支座时,将顶面清理干净并保证支座支承面干燥。

桥梁支座的螺栓要这样安装

2、清理预留孔。清理前检查校核墩台顶锚固螺栓孔的位置、大小及深度,合格后彻底清理。

3、配制砂浆。补偿收缩砂浆的配制按配合比进行,其强度不得低于35MPa。

4、安装锚固螺栓及桥梁支座。吊装桥梁橡胶支座平稳就位,在桥梁支座四角用钢楔将支座底板与墩台面支垫找平,桥梁支座底板底面宜高出墩台顶20~50mm,然后校核安装中心线及高程。

5、安装模板。沿桥梁支座四周支侧模,模板沿桥墩横向轴线方向两侧尺寸应大于桥梁支座宽度各100mm。

6、灌注砂浆。用环氧砂浆或补偿收缩砂浆把螺栓孔和桥梁橡胶支座底板与墩台面间隙灌满,灌注时从一端灌入从另一端流出并排气,保证无空鼓。

7、砂浆达到设计强度后撤除四角钢楔并用环氧砂浆填缝。

1. Chiseling and cleaning of pier and abutment top. When compensating shrinkage mortar is used to fix the bearing, iron chisel is used to chisel the supporting surface of the bridge bearing. The chisel degree satisfies the relevant provisions of "Bridge Concrete Construction Technology Standard" on the treatment of construction joints, and the top surface is cleaned up. When epoxy mortar is used to fix the bearing, the top surface is cleaned up and the supporting surface of the bearing is dry.

2. Clean up the reserved holes. Check the location, size and depth of anchoring bolt holes on pier and abutment top before cleaning, and clean thoroughly after qualified.

3. Preparing mortar. The strength of shrinkage compensating mortar should not be less than 35 MPa.

桥梁支座的螺栓要这样安装

4. Install anchor bolts and bridge supports. The rubber bearing of the bridge is in place smoothly. The steel wedge is used at the four corners of the bridge support to levelize the base plate of the support and the support pad of the pier and abutment. The bottom of the bridge support plate should be 20-50 mm higher than the top of the pier and abutment, and then the installation center line and elevation should be checked.

5. Install the template. The sizes of the formwork on both sides along the transverse axis of the pier should be larger than 100 mm of the width of the bridge support.

6. Pouring mortar. Epoxy mortar or shrinkage compensating mortar is used to fill the gap between the bolt hole and the base plate of bridge rubber bearing and pier abutment. When pouring, it is poured from one end to flow out and exhaust from the other end to ensure no empty drum.

7. When the mortar reaches the designed strength, remove the four-angle steel wedge and fill the joint with epoxy mortar.


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