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管樁施工不合格的處理方法
李國勝1,2
摘 要

(1 銅陵市建筑工程施工圖設(shè)計(jì)文件審查有限公司, 銅陵244000; 2 銅陵市建設(shè)工程質(zhì)量監(jiān)督監(jiān)測有限公司, 銅陵 244000)

[摘要]總結(jié)了管樁施工不合格的處理方法,其中樁承載力不足、偏位、傾斜的處理方法及樁身完整性為Ⅳ類樁時(shí)的接樁處理方法同樣適合于其他預(yù)制樁和灌注樁,具有一定的通用性。該處理方法彌補(bǔ)了目前國內(nèi)這方面資料的不足,對設(shè)計(jì)人員有一定的參考價(jià)值。通過分析指出:《建筑樁基技術(shù)規(guī)范》(JGJ 94—2008)第7-4-5條“四樁承臺中的樁允許偏位為1/2樁徑或邊長”的規(guī)定過松,不安全;《建筑樁基技術(shù)規(guī)范》(JGJ 94—2008)應(yīng)規(guī)定混凝土預(yù)制樁傾斜率限值。并介紹了某18層建筑大量管樁偏位、斷樁和傾斜的處理方法。

[關(guān)鍵詞]管樁; 樁偏位; 樁傾斜; 樁承載力; 樁身完整性; 樁身缺陷; 補(bǔ)樁

中圖分類號:TU473文獻(xiàn)標(biāo)識碼:A文章編號:1002-848X(2019)03-0113-07

 

Treatment method of unqualified pipe pile construction

Li Guosheng 1,2

(1 Tongling Architectural Works Construction Drawing and Design Documents Examination Co., Ltd., Tongling 244000, China;  2 Tongling Construction Engineering Quality Supervision and Testing Co., Ltd., Tongling 244000, China)

Abstract:The treatment methods of unqualified pipe pile construction were summarized. The treatment methods of pile bearing capacity insufficiency, deviation, inclination and pile body integrity of Ⅳ type pile were also suitable for other prefabricated and cast-in-place piles, which had certain universality. This treatment method made up for the shortage of domestic information in this field, and had a certain reference value for designers. Through analysis, it is pointed out that the section 7-4-5 of  Technical code for building pile foundation (JGJ 94—2008) stipulating "the allowable deviation of pile in four pile caps is 1/2 pile diameter or side length" is unsafe;   Technical code for building pile foundation (JGJ 94—2008) should stipulate the limit value of inclination ratio of precast concrete piles. The treatment methods of deviation, broken pile and inclination of a large number of pipe piles in an 18-storey building were also introduced.

Keywords:pipe pile; pile deviation; pile inclination; pile bearing capacity; pile body integrity; pile body defect; pile repair

 

作者簡介:李國勝,學(xué)士,高級工程師,一級注冊結(jié)構(gòu)工程師,Email:693950802@qq.com。

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