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桥梁承担着十分繁重的交通任务,因此桥梁桩基加固的时效性要求很高。以往的增补基础加固法很难解决新旧桩协同受力的问题。本技术采用主筋外加套管隔离承台、埋入式千斤顶保压的创新工艺,并用合理的预压力对增补桩进行预压,同时预埋应变传感器对预压期间及工后的一段时期进行监测,从而判断预压效果,保证新、旧桩在短时间内即开始协同受力。本技术已在实际工程中成功应用,1年多的监测表明该技术是科学可靠的。
Bridges bear a very heavy traffic tasks, so the timeliness of the bridge pile foundation reinforcement requirements. The previous supplement foundation reinforcement method is difficult to solve the problem of new and old pile coordination force. This technology uses the main reinforcement plus casing isolation cap, innovative technology innovation buried jack, and prestressed with a reasonable pre-pressure supplement pile, while pre-buried strain sensor pre-press period and after a period of monitoring , In order to determine the effect of preloading, to ensure that new and old piles in a short time to begin collaborative force. The technology has been successfully applied in practical projects, monitoring more than one year shows that the technology is scientifically reliable.