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北京中英文翻译:为啥桥梁支座会出现位移?该如何纠正呢?

浏览:835 发表时间:2019-03-04

中英文翻译:为啥桥梁支座会出现位移?该如何纠正呢?衡水振瑞橡胶制品有限公司,技术总监为您做以下权威解答:其中内因有桥梁平面曲率、支座布置、收缩徐变等。外因有温度作用、车辆荷载、伸缩缝堵塞和卡死、桥梁支座不均匀沉降等等。但是不管出现何种的支座病害,都需要及时的进行消除、更换,那么对于桥梁支座偏移这个病害来说,该如何纠正呢?

1、将造成梁体偏位的水平纵向分力消除掉,焊接楔形钢板于所有偏位梁体底部钢板下,保证楔形钢板与偏位梁体底部钢板形成的整体下表面呈水平状态,恢复桥梁支座上钢板的水平状态,从而将水平纵向分力对偏位梁体的影响消除掉;

2、对所有桥跨的偏位梁体进行临时固结以形成一个受推整体,同时将偏位朝向一侧的所有桥跨的梁体进行临时固结以形成一个受力整体,目的是将偏位梁体的纠偏水平推力的反作用力通过该受力整体传递到桥台和大地;

为啥桥梁支座会出现位移?该如何纠正呢?

为啥桥梁支座会出现位移?该如何纠正呢?

3、在所有桥墩顶部安装顶升装置,由顶升装置将对应的偏位梁体顶升,使偏位梁体和对应的桥墩上部桥梁支座之间形成间隙;

4、在第3步顶升形成的间隙内设置临时滑动桥梁支座,临时滑动支座包括不锈钢板和聚四氟乙烯板桥梁,不锈钢板位于聚四氟乙烯板之上,不锈钢板和聚四氟乙烯板之间再设置硅脂层,以使不锈钢板和聚四氟乙烯板可自由滑动,然后取消顶升装置支撑力使梁体落在临时滑动桥梁支座上;

5、在该跨偏位梁体横隔板与反力架之间安装纠偏千斤顶,由纠偏千斤顶纵向推该跨偏位梁体,进而推动偏位联整联,推偏位联产生的反作用力通过第2步形成的受力整体传递到桥台和大地;

6、纠偏到位后,拆除反力架,启动顶升装置使纠偏后的梁体相对下部支座悬空,拆除第4步设置的临时滑动桥梁橡胶支座,再取消顶升装置支撑力使梁体落下并拆除顶升装置,取消第2步的临时固结措施,使所有桥跨之间的连接关系以及梁体与桥墩的连接关系恢复到纠偏前状态即可。

1. Eliminate the horizontal and longitudinal forces which cause the deflection of the beam body, and weld the wedge-shaped steel plate under the bottom steel plate of all the deflected beams, so as to ensure that the overall lower surface formed by the wedge-shaped steel plate and the bottom steel plate of the deflected beam body is in a horizontal state and restore the horizontal state of the steel plate on the bridge support, thereby eliminating the influence of the horizontal and longitudinal forces on the deflected beam body.

2. Temporary consolidation of deflected beams of all bridge spans to form a pushed whole, and temporary consolidation of beams of all bridge spans on one side to form a force whole. The purpose is to transfer the reaction force of rectifying horizontal thrust of deflected beams to abutments and the earth through the force as a whole.

3. Installation of lifting device on the top of all piers, lifting device will lift the corresponding offset beam body to form a gap between the offset beam body and the corresponding bridge support on the top of the pier.

为啥桥梁支座会出现位移?该如何纠正呢?

为啥桥梁支座会出现位移?该如何纠正呢?

4. Install temporary sliding bridge support in the gap formed by the third step jacking. The temporary sliding support includes stainless steel plate and PTFE plate bridge. The stainless steel plate is located on the PTFE plate, and the silicone resin layer is set between the stainless steel plate and the PTFE plate so that the stainless steel plate and the PTFE plate can slide freely. Then cancel the support force of the jacking device to make the beam fall on. Temporary sliding bridge support;

5. Install a correcting jack between the diaphragm and the reaction frame of the offset beam body of the span, push the offset beam body longitudinally by the correcting jack, and then push the offset connection to integrate. The reaction force generated by the pushing offset connection is transmitted to the abutment and the earth as a whole through the force formed in the second step.

6. After correcting the deviation, remove the reaction frame, start the lifting device to suspend the corrected beam relative to the lower support, remove the temporary sliding support set in step 4, cancel the lifting device to make the beam fall down and remove the lifting device, cancel the temporary consolidation measures in step 2, and restore the connection between all bridge spans and the beam and pier to the pre-rectification state. State can be.


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