张晋豪 陈龙 张晋滔

摘 要：高桩码头桩基修复受到材料、施工条件等因素的影响，特别是缺陷位于水位变动区或水下的情况，维修加固难度更大。与传统立模支护加固桩基的方法相比，使用玻纤套筒加固桩基时不受墩柱周围水域条件的影响，施工速度快，工期短，造价低。工程应用结果表明：玻纤套筒加固方法更适用于水下桩基加固，加固质量可靠。但在玻纤套筒加固过程中存在玻纖套筒表面鼓凸不平整、玻纤套筒空鼓等施工缺陷，尤其是方桩更为明显。本文结合珠海某码头维修工程，介绍方桩玻纤套筒加固局部施工缺陷原因及处理方案，为今后方桩加固提供施工参考，同时对类似桩基修复工程具有较好的参考价值。

关键词：玻纤套筒;方桩;修复

中图分类号：TU525;U657.4     文献标识码：A   文章编号：1003-5168（2021）36-0080-03

Analysis and Suggestions on Local Construction Defects of Glass Fiber Sleeve Reinforcement for Square Pile

ZHANG Jinhao1    CHEN Long2    ZHANG Jintao3

（1.Guangzhou New Central Axis Construction Co.，Ltd.，Guangzhou Guangdong 510230;

2.China National Chemsitry Southern Construction &Investment Co，.Ltd.，Guangzhou Guangdong 510230;

3.CCCC （Shouguang） Investment Co.，Ltd.，Shouguang  Shandong 262700）

Abstract： The repair of pile foundation of high pile wharf is greatly affected by materials，construction conditions and other factors，especially when the defects are located in the water level change area or underwater，the maintenance and reinforcement is more difficult.Compared with the traditional method of strengthening pile foundation with formwork support，when using glass fiber sleeve to strengthen pile foundation，it is not affected by the water conditions around the pier，with fast construction speed，short construction period and low cost.The engineering application results show that the glass fiber sleeve reinforcement method is more suitable for the reinforcement of underwater pile foundation，and the reinforcement quality is reliable.However，in the process of strengthening the glass fiber sleeve，there are construction defects such as uneven bulge on the surface of the glass fiber sleeve and empty bulge of the glass fiber sleeve，especially the square pile.Combined with a wharf maintenance project in Zhuhai，this paper introduces the causes and treatment schemes of local construction defects of square pile glass fiber sleeve reinforcement，so as to provide construction reference for square pile reinforcement in the future，and has good reference value for similar pile foundation repair projects.

Keywords： glass fiber sleeve; square pile; repair

本项目地处国家一类口岸、华南枢纽港——珠海港高栏港区，该码头引桥长86.7 m，码头岸线长668 m，拥有两个 5万 t级泊位和一个1万 t级泊位。其中，一个5万 t级泊位水工结构按10万 t级设计和建造，为最大可靠泊10万 t级船舶。

运营多年后，码头桩基普遍存在缺陷，方桩表面出现大量裂缝，导致现有混凝土的抗压强度降低，混凝土与钢筋之间的握裹力（钢筋与混凝土之间对抗滑移能力）下降，致使桩柱的承载力不足。急需进行维修加固。

该码头生产业务繁忙，可以施工的时间非常有限。因此，必须选择一种高效率的施工工艺，且由于沿海涨落潮时间每天都在变化，需要在潮湿或有水的环境下进行施工[1-2]。……