施工技术在市政监理中的有效应用与管理策略

Effective Application and Management Strategies of Construction Technology in Municipal Supervision

摘要:

为解决市政工程软土地区深基坑变形控制滞后、管沟回填沉降频发的问题,文章提出一种基于关键工艺参数主动调控的新型监理模式。首先,该策略引入管线刚度影响系数修正Peck(派克)公式,将反算得到的地层允许损失率作为开挖停工判据;其次,基于宾汉流体扩散理论确定防劈裂注浆的压力限值;最后,建立基于管-土复合刚度的回填质量控制标准。本文结合工程实例,对比分析了传统旁站管理与参数化干预模式的控制效果。实测结果表明,该策略可将基坑周边地表沉降有效控制在预警值的80%以内,同时将回填区域的工后沉降速率控制在0.03 mm/d以内。

Abstract:

In order to solve the problems of lagging deformation control of deep foundation pits and frequent settlement of pipe trench backfilling in soft soil areas of municipal engineering, this article proposes a new supervision mode based on active control of key process parameters. Firstly, this strategy introduces the pipeline stiffness influence coefficient correction Peck formula, and uses the back calculated allowable loss rate of the formation as the criterion for excavation stoppage. Secondly, based on the Bingham fluid diffusion theory, determine the pressure limit for anti splitting grouting. Finally, establish a backfill quality control standard based on pipe soil composite stiffness. This article combines engineering examples to compare and analyze the control effects of traditional site management and parameterized intervention modes. The actual test results show that this strategy can effectively control the surface settlement around the foundation pit within 80% of the warning value, and at the same time control the post construction settlement rate of the backfill area within 0.03 mm/d.