CN101117801A - Composite pile for engineering reconstruction and pile forming method - Google Patents

Composite pile for engineering reconstruction and pile forming method Download PDF

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CN101117801A
CN101117801A CNA2007100727482A CN200710072748A CN101117801A CN 101117801 A CN101117801 A CN 101117801A CN A2007100727482 A CNA2007100727482 A CN A2007100727482A CN 200710072748 A CN200710072748 A CN 200710072748A CN 101117801 A CN101117801 A CN 101117801A
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pile
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superimposed
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CN100513704C (en
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郑文忠
侯晓萌
王英
周威
解恒燕
谭军
张辉
王宏伟
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Harbin Institute of Technology Shenzhen
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Abstract

工程改造用叠合桩及其成桩方法,它涉及工程改造加固桩及其成桩方法。它解决了加固方法要增加桩数和增设承台对原桩基础进行加固,整体性能差的问题。本发明的纵筋(3)、外围环形箍筋(4)和外围环形混凝土(2)沿原桩(1)长度方向设在原桩(1)外表面的周围,构成叠合桩。方法的步骤如为:一、给原桩卸载;二、将卸载后的原桩(1)周边的土体清除,然后对原桩(1)周围进行扩孔;三、沿原桩(1)长度方向将纵筋(3)和环形箍筋(4)设置在原桩(1)周围孔内;四、向孔内浇注混凝土(2),即形成叠合桩。本发明适用于对每根柱对应一根桩的原建筑物直接加层的桩基础的加固改造。本发明的方法简便,能提高工效,而且桩的承载能力强。

The invention relates to a composite pile for engineering transformation and a method for forming the pile, which relates to a reinforced pile for engineering transformation and a method for forming the pile. It solves the problem that the strengthening method needs to increase the number of piles and add caps to reinforce the original pile foundation, and the overall performance is poor. The longitudinal reinforcement (3), peripheral annular stirrup (4) and peripheral annular concrete (2) of the present invention are arranged around the outer surface of the original pile (1) along the length direction of the original pile (1) to form a superimposed pile. The steps of the method are as follows: 1. unload the original pile; 2. remove the soil around the unloaded original pile (1), and then ream the holes around the original pile (1); 3. The longitudinal reinforcement (3) and the annular stirrup (4) are arranged in the holes around the original pile (1) in the length direction; 4. Pour concrete (2) into the hole to form a composite pile. The invention is applicable to the reinforcement and transformation of the pile foundation of the original building where each column corresponds to a pile and directly adds layers. The method of the invention is simple and convenient, can improve work efficiency, and has strong bearing capacity of the pile.

Description

工程改造用叠合桩及其成桩方法 Composite pile for engineering reconstruction and pile forming method

技术领域 technical field

本发明涉及土木工程领域的配筋混凝土桩及成桩方法,尤其是工程改造加固桩及其成桩方法。The invention relates to a reinforced concrete pile and a pile forming method in the field of civil engineering, in particular to an engineering transformation reinforced pile and a pile forming method thereof.

背景技术 Background technique

目前,对于一根柱子对应于一根桩的原结构,当需要原桩的结构的荷载增加时(即对原建筑物增层时),原有桩基础的抗力不足,不但需对原建筑物的上部结构进行加固,而且现有的加固要增加桩数和增设承台对原桩基础进行加固,这种方法施工繁琐,原材料增加,整体性能差。At present, for the original structure where one column corresponds to one pile, when the load of the structure requiring the original pile increases (that is, when the original building is added), the resistance of the original pile foundation is insufficient, and not only the original building needs to be The upper structure of the pile is reinforced, and the existing reinforcement needs to increase the number of piles and add caps to reinforce the original pile foundation. This method is cumbersome in construction, increases in raw materials, and poor overall performance.

发明内容 Contents of the invention

本发明为解决现有加固方法要增加桩数和增设承台对原桩基础进行加固,施工繁琐,原材料增加,整体性能差的问题,提出了一种工程改造用叠合桩及其成桩方法,解决上述问题的具体技术方案如下:In order to solve the problem that the existing reinforcement method needs to increase the number of piles and add caps to reinforce the original pile foundation, the construction is cumbersome, the raw materials are increased, and the overall performance is poor, the invention proposes a composite pile for engineering transformation and its pile forming method , the specific technical scheme to solve the above problems is as follows:

本发明由原桩、外围环形混凝土、纵筋和外围环形箍筋构成,纵筋、外围环形箍筋和外围环形混凝土沿原桩长度方向设在原桩外表面的周围,构成叠合桩。The invention is composed of original pile, peripheral annular concrete, longitudinal reinforcement and peripheral annular stirrup. The longitudinal reinforcement, peripheral annular stirrup and peripheral annular concrete are arranged around the outer surface of the original pile along the length direction of the original pile to form a superimposed pile.

本发明的成桩方法的步骤如下:The steps of pile-forming method of the present invention are as follows:

步骤一、在相邻二柱之间设置条基,在条基上浇(砌)筑墙体,使原桩承担的荷载传递给条基;Step 1: Set up a strip foundation between two adjacent columns, and pour (build) a wall on the strip foundation, so that the load borne by the original pile is transmitted to the strip foundation;

步骤二、依据叠合桩的设计尺寸,将卸载后的原桩周边的土体清除,然后对原桩周围进行扩孔,扩孔深度为原桩的深度,将桩底部扩大尺寸;扩大头尺寸和桩周围叠合环厚度根据改造工程需要的荷载确定;Step 2. According to the design size of the superimposed pile, remove the soil around the unloaded original pile, and then ream the hole around the original pile. The depth of the reaming hole is the depth of the original pile, and expand the size of the bottom of the pile; expand the size of the head The thickness of the superimposed ring around the pile is determined according to the load required by the renovation project;

步骤三、在经扩孔后的原桩周围叠合环腔内,沿原桩长度方向将纵筋和环形箍筋设置在原桩的周围,形成叠合层钢筋骨架;Step 3, in the superimposed ring cavity around the reamed original pile, arrange the longitudinal reinforcement and the annular stirrup around the original pile along the length direction of the original pile to form a laminated layer reinforcement skeleton;

步骤四、向步骤二和形成叠合钢筋骨架的原桩周围叠合环腔内浇筑混凝土,即形成本发明的叠合桩。Step 4: Pour concrete into the superimposed annular cavity around the original pile formed in step 2 and the superimposed steel skeleton, to form the superimposed pile of the present invention.

本发明适用于对每根柱对应一根桩的原建筑物直接加层的桩基础的加固改造。本发明的方法简便,能提高工效,节省原材料,而且桩的整体性能好。本发明广泛适用于工程改造桩基加固工程。The invention is applicable to the reinforcement and transformation of the pile foundation of the original building where each column corresponds to a pile and directly adds layers. The method of the invention is simple, can improve work efficiency, save raw materials, and has good overall performance of the pile. The invention is widely applicable to engineering reconstruction pile foundation reinforcement engineering.

附图说明 Description of drawings

图1是本发明叠合桩基础的叠合部分与原桩1基础长度方向结构示意图,图2是图1的A-A截面剖视图。图中5为原桩1基础扩宽处,6为原桩基础底部,7为叠合桩基底部,8为对原基础扩的孔。Fig. 1 is a schematic diagram of the superimposed part of the superimposed pile foundation of the present invention and the length direction structure of the original pile 1 foundation, and Fig. 2 is a cross-sectional view of A-A of Fig. 1 . Among the figure, 5 is the widening part of the original pile 1 foundation, 6 is the bottom of the original pile foundation, 7 is the bottom of the superimposed pile foundation, and 8 is the hole enlarged to the original foundation.

具体实施方式 Detailed ways

具体实施方式一:结合图1、图2描述本实施方式,本实施方式由原桩1、外围环形混凝土2、纵筋3和外围环形箍筋4构成,纵筋3、外围环形箍筋4和外围环形混凝土2沿原桩1长度方向设在原桩1外表面的周围,构成叠合桩。Specific Embodiment 1: This embodiment is described in conjunction with Fig. 1 and Fig. 2. This embodiment is composed of the original pile 1, the peripheral annular concrete 2, the longitudinal reinforcement 3 and the peripheral annular stirrup 4, the longitudinal reinforcement 3, the peripheral annular stirrup 4 and The peripheral annular concrete 2 is arranged around the outer surface of the original pile 1 along the length direction of the original pile 1 to form a composite pile.

具体实施方式二:本实施方式方法的步骤如下:Specific embodiment two: the steps of this embodiment method are as follows:

步骤一、在相邻二柱之间设置条基,在条基上浇(砌)筑墙体,使原桩承担的荷载传递给条基;Step 1: Set up a strip foundation between two adjacent columns, and pour (build) a wall on the strip foundation, so that the load borne by the original pile is transmitted to the strip foundation;

步骤二、依据叠合桩的设计尺寸,将卸载后的原桩1周边的土体清除,然后对原桩1周围进行扩孔,扩孔深度为原桩1的深度,将桩底部扩大尺寸;扩大头尺寸和桩周围叠合环厚度根据改造工程需要的荷载确定;Step 2. According to the design size of the superimposed pile, the soil around the unloaded original pile 1 is removed, and then the surrounding of the original pile 1 is reamed. The depth of reaming is the depth of the original pile 1, and the size of the bottom of the pile is enlarged; The size of the enlarged head and the thickness of the superimposed ring around the pile are determined according to the load required by the renovation project;

步骤三、在经扩孔后的原桩1周围叠合环腔内,沿原桩1长度方向将纵筋3和环形箍筋4设置在原桩1的周围,形成叠合层钢筋骨架;Step 3, in the superimposed annular cavity around the reamed original pile 1, arrange the longitudinal reinforcement 3 and the annular stirrup 4 around the original pile 1 along the length direction of the original pile 1 to form a superimposed layer reinforcement skeleton;

步骤四、向步骤二和形成叠合钢筋骨架的原桩1周围叠合环腔内浇筑混凝土2,即形成本发明的叠合桩。Step 4: Pour concrete 2 into the superimposed ring cavity around the original pile 1 formed in step 2 and form the superimposed steel skeleton, that is, to form the superimposed pile of the present invention.

在叠合桩能有效承载后,拆除相邻两柱间后浇(砌)筑的墙体,使加固后的叠合桩恢复承载。After the superimposed pile can effectively carry the load, the post-cast (masonry) wall between two adjacent columns is removed, so that the reinforced superposed pile can resume bearing.

Claims (2)

1.工程改造用叠合桩,它由原桩(1)、外围环形混凝土(2)、纵筋(3)和外围环形箍筋(4)构成,其特征在于纵筋(3)、外围环形箍筋(4)和外围环形混凝土(2)沿原桩(1)长度方向固设在原桩(1)外表面的周围,构成叠合桩。1. Composite pile for engineering transformation, which is composed of original pile (1), peripheral annular concrete (2), longitudinal reinforcement (3) and peripheral annular stirrup (4), and is characterized in that longitudinal reinforcement (3), peripheral annular Stirrups (4) and peripheral annular concrete (2) are fixed around the outer surface of the original pile (1) along the length direction of the original pile (1) to form a composite pile. 2.权利要求1所述的工程改造用叠合桩的成桩方法,其特征在于该方法的步骤如下:2. The pile-forming method of composite pile for engineering transformation as claimed in claim 1 is characterized in that the steps of the method are as follows: 步骤一、在相邻二柱之间设置条基,在条基上浇筑墙体,使原桩承担的荷载传递给条基;Step 1. Set up a strip foundation between two adjacent columns, and pour a wall on the strip foundation, so that the load borne by the original pile is transmitted to the strip foundation; 步骤二、依据叠合桩的设计尺寸,将卸载后的原桩(1)周边的土体清除,然后对原桩(1)周围进行扩孔,扩孔深度为原桩(1)的深度,将桩底部扩大尺寸;Step 2. According to the design size of the superimposed pile, the soil around the unloaded original pile (1) is removed, and then the surrounding of the original pile (1) is reamed, and the reaming depth is the depth of the original pile (1). Expand the size of the bottom of the pile; 步骤三、在经扩孔后的原桩(1)周围叠合环腔内,沿原桩(1)长度方向将纵筋(3)和环形箍筋(4)设置在原桩(1)的周围,形成叠合层钢筋骨架;Step 3: In the superimposed annular cavity around the reamed original pile (1), arrange the longitudinal reinforcement (3) and annular stirrup (4) around the original pile (1) along the length direction of the original pile (1) , forming a composite layer reinforcement skeleton; 步骤四、向步骤二和形成叠合钢筋骨架的原桩(1)周围叠合环腔内浇注混凝土(2),即形成本发明的叠合桩。Step 4: Pour concrete (2) into the superimposed ring cavity around the original pile (1) formed in step 2 and the superimposed steel skeleton, to form the superimposed pile of the present invention.
CNB2007100727482A 2007-09-05 2007-09-05 Superposition pile for engineering reconstruction and pile forming method Expired - Fee Related CN100513704C (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101806040A (en) * 2010-03-25 2010-08-18 徐国彬 Underpinning device and method for bridge and building
CN101550705B (en) * 2008-03-31 2012-12-05 贵阳铝镁设计研究院有限公司 Reinforcement processing method of pile foundation
CN103174163A (en) * 2011-12-26 2013-06-26 贵阳铝镁设计研究院有限公司 Heightening method and heightening structure of opening of prefabricated column foundation
CN103669901A (en) * 2013-12-04 2014-03-26 岩土科技股份有限公司 Method used for reforming pile in underground space into pillar
CN105113387A (en) * 2015-08-27 2015-12-02 苏州同尚工程设计咨询有限公司 Reconstruction structure and construction method of bridge bearing platform
CN110670579A (en) * 2019-04-17 2020-01-10 柳红滨 Hoop pile for pile foundation engineering and foundation treatment and construction process thereof

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101550705B (en) * 2008-03-31 2012-12-05 贵阳铝镁设计研究院有限公司 Reinforcement processing method of pile foundation
CN101806040A (en) * 2010-03-25 2010-08-18 徐国彬 Underpinning device and method for bridge and building
CN101806040B (en) * 2010-03-25 2012-05-30 徐国彬 Underpinning device and method for bridge and building
CN103174163A (en) * 2011-12-26 2013-06-26 贵阳铝镁设计研究院有限公司 Heightening method and heightening structure of opening of prefabricated column foundation
CN103669901A (en) * 2013-12-04 2014-03-26 岩土科技股份有限公司 Method used for reforming pile in underground space into pillar
CN105113387A (en) * 2015-08-27 2015-12-02 苏州同尚工程设计咨询有限公司 Reconstruction structure and construction method of bridge bearing platform
CN110670579A (en) * 2019-04-17 2020-01-10 柳红滨 Hoop pile for pile foundation engineering and foundation treatment and construction process thereof

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Assignee: The Guangdong No. 3 Water Conservancy and Hydro-Electric Engineering Board

Assignor: Harbin Institute of Technology

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Denomination of invention: Superposition pile for engineering reconstruction and pile forming method

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