【摘要】 针对目前国内的桥梁顶升、平移现状,提出了一种依靠摩擦阻荷平衡顶推反力的实用、新型技术。首先介绍了摩擦阻荷工作原理,并依据该原理设计了竖向和横向顶推联动装置。装置主要由两个竖向放置和一个水平放置的千斤顶构成,水平千斤顶的顶推反力通过竖向千斤顶摩擦力来平衡。接着进一步分析出该装置竖向和水平千斤顶吨位比宜在1∶4至1∶8之间,并建议竖向千斤顶不出现相对滑动应作为施工控制指标。最后,以北郊河桥的纠偏施工中利用该装置仅1小时就将发生200 mm侧偏的桥梁顺利顶推复位的实例,证实了该装置具有较大的经济性和可靠性,值得在各类建筑和构筑物平移中进一步推广与应用。更多还原

【Abstract】 According to bridge construction of the lift-up and relocation,the practical and new technologies has been put forward by use of frictional resistance balanced with incremental launching reaction in this paper.At first,the principle of frictional resistance was introduced and linkage mechanism of vertical and transverse was designed based on this principle.The divice is composed of two vertical and one horizontal jack and the reaction of horizontal jack was balanced with friction of vertical jack.The analysis shows that tonnage proportion of vertical and horizontal jack will be suitable between 1∶4 and 1∶8 and relative sliding should not appear on construction process.At last,the north suburb river bridge with 200mm offset was restored successfully by means of this device and the whole process spended one hour merely.The project proves that this device has great economy and reliability and should be spreaded and applied in the relocation of buildings and structures.更多还原