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平原中小型水利桥闸早期设计标准低,施工工艺差,管护跟不上,和现阶段交通、生产工具不相适应,是危桥、危闸形成的主要原因。除险加固施工中要关注围堰的选址、破拆,桥板、盖梁、灌注桩、栏杆、闸门等修复要点,以及闸身倾斜、底板变形修复中采取地基固结灌浆施工的着重点。
The early design standards for small and medium-sized water conservancy bridges in the plains are poor, the construction techniques are poor, and the pipe maintenance can not keep up. This is not compatible with the traffic and production tools at this stage, which is the main reason for the formation of dangerous bridges and dangerous gates. Reinforcement construction should pay attention to cofferdam site selection, demolition, bridge, cover beams, bored piles, railings, gates and other repair points, as well as the gate body tilt, floor deformation repair to take the foundation consolidation grouting construction focus .