CN104358422B - Pre-applied force equipment and the method in reinforcing wall crack - Google Patents
Pre-applied force equipment and the method in reinforcing wall crack Download PDFInfo
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Abstract
本发明公开了加固墙体裂缝的预加力工作装置和方法，属于建筑技术领域，其结构包括多杆螺栓、垫板和紧固螺母；多杆螺栓包括一个连接体和多个螺栓柱，多个螺栓柱包括设置在连接体中部的两个长螺栓柱和设置在连接体左右两端部的多个短螺栓柱；多杆螺栓包括多个，多个螺栓柱分别穿入墙体，其中两个长螺栓柱分别穿出墙体，其端部设置有螺纹，并通过紧固螺母紧固，紧固螺母与墙体之间的长螺栓柱上还设置有垫板。本发明还公开了使用上述装置加固墙体裂缝的方法，本发明具有多杆螺栓承受墙体截面一定量的拉力，通过加力的大小，来控制裂缝开裂的大小；多杆螺栓和墙体共同工作受力；大大节约钢筋用量，可以有效控制裂缝的大小，综合经济效益高等特点。
The invention discloses a pre-stressing working device and method for reinforcing cracks in a wall, belonging to the technical field of construction. The structure includes multi-rod bolts, backing plates and fastening nuts; the multi-rod bolts include a connecting body and a plurality of bolt columns, and the A bolt column includes two long bolt columns arranged in the middle of the connecting body and a plurality of short bolt columns arranged at the left and right ends of the connecting body; the multi-rod bolt includes a plurality of bolt columns respectively penetrating into the wall, two of which The two long bolt columns pass through the wall respectively, the ends of which are provided with threads, and are fastened by fastening nuts, and a backing plate is also arranged on the long bolt columns between the fastening nuts and the wall. The invention also discloses a method for using the above-mentioned device to reinforce cracks in a wall. The invention has multi-rod bolts that bear a certain amount of tension on the wall section, and controls the size of the cracks through the magnitude of the added force; the multi-rod bolts and the wall work together to The work is stressed; the amount of steel bar is greatly saved, the size of the crack can be effectively controlled, and the comprehensive economic benefits are high.
Description
技术领域technical field
本发明涉及一种建筑技术领域，尤其是一种加固墙体裂缝的预加力工作装置和方法。The invention relates to the technical field of construction, in particular to a prestressing working device and method for reinforcing cracks in walls.
背景技术Background technique
在现阶段住宅中，砖混砌体结构的楼房占了相当大的比例，常常由于材料在热胀冷缩、湿胀干缩条件下引起的收缩不一致而导致墙体开裂；另外，在砌体结构中，常由于(放炮)振动或地基不均匀沉降引起墙体开裂，从而影响建筑物的美观及使用功能，砌体结构的裂缝问题成为房屋用户投诉最多的问题。砌体属于脆性材料，裂缝的存在降低了墙体的质量，如整体性、耐久性和抗震性能，而且对居住者在观感和心理上造成不良影响。In the current stage of residential buildings, buildings with brick-concrete structure account for a considerable proportion, and the walls are often cracked due to the inconsistent shrinkage of materials caused by thermal expansion and contraction, and wet expansion and contraction; in addition, in masonry In the structure, the wall cracks are often caused by (blasting) vibration or uneven settlement of the foundation, which affects the appearance and function of the building. The crack problem of masonry structure has become the most complained problem by house users. Masonry is a brittle material, and the existence of cracks reduces the quality of the wall, such as integrity, durability and seismic performance, and has adverse effects on the perception and psychology of the occupants.
以前处理此类裂缝，多采用填缝法、压浆法、外加网片法和置换法等，并且根据工程需要，这些方法组合使用。采用现有的这些方式处理裂缝，虽然可以暂时封闭填平裂缝，但由于裂缝在今后的四季温度及湿度交替循环下还会继续发展，现有的这些修补方法不能从根本上解决问题，过一定时间后，其墙体裂缝还会显现，甚至扩大，还需要重复进行修补，难以彻底处理裂缝问题。In the past, to deal with such cracks, the joint filling method, grouting method, external mesh method and replacement method were mostly used, and these methods were used in combination according to engineering needs. Using these existing methods to deal with cracks, although the cracks can be temporarily closed and filled, but because the cracks will continue to develop under the alternating cycle of temperature and humidity in the four seasons in the future, these existing repair methods cannot fundamentally solve the problem. After a period of time, the cracks in the wall will appear or even expand, and repeated repairs are required, making it difficult to completely solve the problem of cracks.
剔缝埋筋法曾经作为传统的加固砌体结构的方法，由于不能很好的控制裂缝的大小，未被加入《砌体结构加固设计规范》GB50702-2011，令人相当遗憾。The seam picking method used to be a traditional method of strengthening masonry structures. It is quite regrettable that it has not been included in the "Code for Design of Reinforcement of Masonry Structures" GB50702-2011 because it cannot control the size of cracks well.
目前，还未有好的解决方案。Currently, there is no good solution.
发明内容Contents of the invention
本发明的技术任务是针对上述现有技术中的不足提供一种加固墙体裂缝的预加力工作装置和方法，该加固墙体裂缝的预加力工作装置和方法具有可以任意在多杆螺栓上加精确力，让多杆螺栓承受墙体截面一定量的拉力，通过加力的大小，来控制裂缝开裂的大小；当墙体受力时，多杆螺栓和墙体共同工作；与全截面钢筋网加固温度裂缝相比，大大节约钢筋用量，与传统的剔缝埋筋法相比，可以有效控制裂缝的大小，综合经济效益高的特点。The technical task of the present invention is to provide a kind of prestressing working device and method for reinforcing wall cracks in view of the above-mentioned deficiencies in the prior art, and the prestressing working device and method for strengthening wall cracks have Precise force is added to allow the multi-rod bolts to bear a certain amount of tension on the wall section, and the size of the crack is controlled by the magnitude of the added force; when the wall is stressed, the multi-rod bolts and the wall work together; and the full section Compared with the reinforcement of temperature cracks with steel mesh, it can greatly save the amount of steel bars. Compared with the traditional method of picking seams and embedding bars, it can effectively control the size of cracks, and has the characteristics of high comprehensive economic benefits.
本发明解决其技术问题所采用的技术方案是：The technical solution adopted by the present invention to solve its technical problems is:
加固墙体裂缝的预加力工作装置：它包括多杆螺栓、垫板和紧固螺母；Prestressed working device for strengthening cracks in the wall: it includes multi-rod bolts, backing plates and fastening nuts;
所述的多杆螺栓包括一个连接体和多个螺栓柱，所述的多个螺栓柱分别设置在连接体的同侧，所述的多个螺栓柱包括设置在连接体中部的两个长螺栓柱和设置在连接体左右两端部的多个短螺栓柱，连接体左端部和右端部的短螺栓柱沿连接体中部对称设置，所述的两个长螺栓柱的长度大于墙体的宽度，短螺栓柱的长度小于墙体的宽度，所述的连接体和多个螺栓柱分别由钢筋制成；The multi-rod bolts include a connecting body and multiple bolt columns, the multiple bolt columns are respectively arranged on the same side of the connecting body, and the multiple bolt columns include two long bolts arranged in the middle of the connecting body Columns and a plurality of short bolt columns arranged at the left and right ends of the connecting body, the short bolt columns at the left and right ends of the connecting body are arranged symmetrically along the middle of the connecting body, and the length of the two long bolt columns is greater than the width of the wall , the length of the short bolt column is less than the width of the wall, and the connecting body and the plurality of bolt columns are respectively made of steel bars;
所述的多杆螺栓包括多个，分别以裂缝为中心上下间隔设置，每个多杆螺栓的多个螺栓柱分别穿入墙体，其中中部的两个长螺栓柱分别穿出墙体，其端部设置有螺纹，并通过紧固螺母紧固，所述的紧固螺母与墙体之间的长螺栓柱上还设置有垫板。The multi-rod bolts include a plurality of bolts, which are respectively arranged at intervals up and down centered on cracks, and a plurality of bolt columns of each multi-rod bolt respectively penetrate into the wall, wherein the two long bolt columns in the middle respectively pass through the wall, and the The ends are provided with threads and fastened by fastening nuts, and backing plates are also arranged on the long bolt columns between the fastening nuts and the wall.
所述的短螺栓柱包括两个，分别对称设置在连接体的左右两端。The short bolt columns include two, which are respectively arranged symmetrically at the left and right ends of the connecting body.
所述的两个短螺栓柱的外圆周上分别设置有螺纹，其前端分别为尖形设计。The outer circumferences of the two short bolt columns are respectively provided with threads, and the front ends thereof are respectively pointed.
所述的垫板的前侧两端分别设置有加强筋，所述的加强筋包括圆柱部和尖刺部，所述的尖刺部设置在圆柱部的前端，圆柱部的后端与垫板相固定，所述的两端的加强筋分别穿入墙体，加强筋的长度小于墙体的宽度。The two ends of the front side of the backing plate are respectively provided with reinforcing ribs, and the reinforcing ribs include a cylindrical portion and a spike portion, the spiked portion is arranged at the front end of the cylindrical portion, and the rear end of the cylindrical portion is connected The reinforcing ribs at the two ends are respectively penetrated into the wall, and the length of the reinforcing ribs is less than the width of the wall.
加固墙体裂缝的方法，包括以下步骤：A method for reinforcing cracks in a wall, comprising the following steps:
(1)采用压浆法修补墙体裂缝：即将低粘度、高强度的裂缝修补胶液注入裂缝腔内；(1) Use the grouting method to repair wall cracks: inject low-viscosity, high-strength crack repair glue into the crack cavity;
(2)将多杆螺栓锚入墙体：先将墙体裂缝两端分别钻孔，将多杆螺栓的长螺栓柱和短螺栓柱沿墙体上钻出的孔，垂直方向穿入墙体，将穿过墙体的多杆螺栓的长螺栓柱上套入垫板，再将套有垫板的长螺栓柱上套入紧固螺母，拧紧紧固螺母的同时，垫板前侧的加强筋伸入墙体，对裂缝施加了一定的压力，同时多杆螺栓也对裂缝预加一定的力，然后再用植筋胶将多杆螺栓锚入墙体。(2) Anchor the multi-rod bolts into the wall: first drill holes at both ends of the wall cracks, and insert the long and short bolt columns of the multi-rod bolts into the wall vertically along the holes drilled on the wall , put the long bolt column of the multi-rod bolt passing through the wall into the backing plate, and then put the fastening nut on the long bolt column covered with the backing plate, and tighten the fastening nut at the same time, the reinforcing rib on the front side of the backing plate Extending into the wall, a certain pressure is applied to the cracks, and at the same time, the multi-rod bolts also pre-apply a certain force on the cracks, and then the multi-rod bolts are anchored into the wall with planting glue.
本发明的加固墙体裂缝的预加力工作装置和方法和现有技术相比，具有以下突出的有益效果：通过加力装置将穿出墙体外的长螺栓柱上的紧固螺母紧固，可以任意在多杆螺栓上加精确力，让多杆螺栓承受墙体截面一定量的拉力，通过加力的大小，来控制裂缝开裂的大小；当多杆螺栓的长螺栓柱对裂缝预加力而损坏墙体，对裂缝预加力不起作用时，短螺栓柱同样可以起到对裂缝预加力，防止裂缝再次裂开；当墙体受力时，多杆螺栓和墙体共同工作，同时受力；垫板上设置有加强筋，可以使加强筋同时受力工作，对裂缝预加力，减小裂缝，防止裂缝再次裂开；采用本发明的加固墙体裂缝的方法，与全截面钢筋网加固温度裂缝相比，大大节约钢筋用量，与传统的剔缝埋筋法相比，可以有效控制裂缝的大小，综合经济效益高等特点。Compared with the prior art, the pre-stressing working device and method for strengthening wall cracks of the present invention have the following prominent beneficial effects: the fastening nuts on the long bolt columns passing through the wall are fastened by the force-applying device , the precise force can be arbitrarily added to the multi-rod bolts, so that the multi-rod bolts can bear a certain amount of tensile force on the wall section, and the size of the crack can be controlled by the magnitude of the added force; when the long bolt column of the multi-rod bolt When the force damages the wall and does not work on the crack preload, the short bolt column can also play a role in the crack preload to prevent the crack from cracking again; when the wall is stressed, the multi-rod bolts and the wall work together , and stress at the same time; the backing plate is provided with reinforcing ribs, which can make the reinforcing ribs work under stress at the same time, pre-stress the cracks, reduce the cracks, and prevent the cracks from splitting again; adopt the method for reinforcing wall cracks of the present invention, and Compared with the reinforcement of temperature cracks with full-section steel mesh, it greatly saves the amount of steel bars. Compared with the traditional method of embedding bars, it can effectively control the size of cracks and has high comprehensive economic benefits.
附图说明Description of drawings
附图1是加固墙体裂缝的预加力工作装置的主视结构示意图；Accompanying drawing 1 is the front view structure schematic diagram of the prestressing working device of reinforcing wall body crack;
附图2是图1中所示的A-A剖视图；Accompanying drawing 2 is A-A sectional view shown in Fig. 1;
附图3是加固墙体裂缝的预加力工作装置的后视结构示意图；Accompanying drawing 3 is the rear view structure schematic diagram of the prestressing working device of reinforcing wall body crack;
附图4是加固墙体裂缝的预加力工作装置位于墙体内的主视结构示意图；Accompanying drawing 4 is the main view structure schematic diagram that the prestressing working device of reinforcing wall body crack is located in the wall;
附图标记说明：Explanation of reference signs:
1、多杆螺栓，11、连接体，12、长螺栓柱，13、短螺栓柱；1. Multi-rod bolts, 11. Connector, 12. Long bolt columns, 13. Short bolt columns;
2、垫板，21、加强筋，210、圆柱部，211、尖刺部；2. Backing plate, 21, reinforcing rib, 210, cylindrical part, 211, spike part;
3、紧固螺母；3. Tighten the nut;
4、墙体；4. Wall;
5、裂缝。5. Cracks.
具体实施方式detailed description
参照说明书附图1至附图4对本发明的加固墙体裂缝的预加力工作装置和方法作以下详细地说明。Referring to accompanying drawings 1 to 4 of the description, the prestressing working device and method for reinforcing wall cracks of the present invention will be described in detail below.
本发明的加固墙体裂缝的预加力工作装置，其结构包括多杆螺栓1、垫板2和紧固螺母3；The pre-stressing working device for strengthening wall cracks of the present invention has a structure comprising a multi-rod bolt 1, a backing plate 2 and a fastening nut 3;
所述的多杆螺栓1包括一个连接体11和多个螺栓柱，所述的多个螺栓柱分别设置在连接体11的同侧，所述的多个螺栓柱包括设置在连接体11中部的两个长螺栓柱12和设置在连接体11左右两端部的多个短螺栓柱13，连接体11左端部和右端部的短螺栓柱13沿连接体11中部对称设置，所述的两个长螺栓柱12的长度大于墙体4的宽度，短螺栓柱13的长度小于墙体4的宽度，所述的连接体11和多个螺栓柱分别由钢筋制成；The multi-rod bolt 1 includes a connecting body 11 and a plurality of bolt columns, the plurality of bolt columns are respectively arranged on the same side of the connecting body 11, and the plurality of bolt columns include a Two long bolt columns 12 and a plurality of short bolt columns 13 arranged at the left and right ends of the connecting body 11, the short bolt columns 13 at the left end and the right end of the connecting body 11 are arranged symmetrically along the middle of the connecting body 11, and the two The length of long bolt column 12 is greater than the width of body of wall 4, and the length of short bolt column 13 is less than the width of body of wall 4, and described connecting body 11 and a plurality of bolt columns are respectively made of steel bar;
所述的多杆螺栓1包括多个，分别以裂缝5为中心上下间隔设置，每个多杆螺栓1的多个螺栓柱分别穿入墙体4，其中中部的两个长螺栓柱12分别穿出墙体4，其端部设置有螺纹，并通过紧固螺母3紧固，所述的紧固螺母3与墙体4之间的长螺栓柱12上还设置有垫板2。The multi-rod bolts 1 include a plurality of them, which are arranged at intervals up and down with the crack 5 as the center, and a plurality of bolt columns of each multi-rod bolt 1 penetrate into the wall body 4 respectively, and the two long bolt columns 12 in the middle are respectively penetrated into the wall body 4. Out of the wall body 4 , its end is provided with threads, and is fastened by a fastening nut 3 , and a backing plate 2 is also arranged on the long bolt post 12 between the fastening nut 3 and the wall body 4 .
所述的短螺栓柱13包括两个，分别对称设置在连接体11的左右两端。The short bolt columns 13 include two, which are respectively arranged symmetrically at the left and right ends of the connecting body 11 .
所述的两个短螺栓柱13的外圆周上分别设置有螺纹，可以使短螺栓柱对墙体有较好的抓持力，防止脱出墙体，其前端分别为尖形设计。两个短螺栓柱13的前端为尖形，容易导入墙体，可以方便地插入墙体4。The outer circumferences of the two short bolt columns 13 are respectively provided with threads, which can make the short bolt columns have a better grip on the wall and prevent them from falling out of the wall, and their front ends are respectively pointed. The front ends of the two short bolt columns 13 are pointed, which are easy to lead into the wall and can be inserted into the wall 4 conveniently.
所述的垫板2的前侧两端分别设置有加强筋21，所述的加强筋21包括圆柱部210和尖刺部211，所述的尖刺部211设置在圆柱部210的前端，圆柱部210的后端与垫板2相固定，所述的两端的加强筋21分别穿入墙体4，加强筋21的长度小于墙体4的宽度。加强筋21可以对裂缝5预加力，减小裂缝5，防止裂缝5再次裂开。Both ends of the front side of the backing plate 2 are respectively provided with reinforcing ribs 21, and the reinforcing ribs 21 include a cylindrical portion 210 and a spiked portion 211, and the spiked portion 211 is arranged at the front end of the cylindrical portion 210, and the cylindrical portion 210 The rear end of the part 210 is fixed to the backing plate 2 , and the reinforcing ribs 21 at both ends respectively penetrate into the wall body 4 , and the length of the reinforcing ribs 21 is smaller than the width of the wall body 4 . The ribs 21 can prestress the cracks 5, reduce the cracks 5, and prevent the cracks 5 from splitting again.
加固墙体裂缝的方法，包括以下步骤：A method for reinforcing cracks in a wall, comprising the following steps:
(1)采用压浆法修补墙体裂缝5：即将低粘度、高强度的裂缝修补胶液注入裂缝腔内；(1) Use the grouting method to repair wall cracks 5: inject low-viscosity, high-strength crack repair glue into the crack cavity;
(2)将多杆螺栓1锚入墙体4：先将墙体裂缝两端分别钻孔，将多杆螺栓1的长螺栓柱和短螺栓柱沿墙体上钻出的孔，垂直方向穿入墙体4，将穿过墙体4的多杆螺栓1的长螺栓柱12上套入垫板2，再将套有垫板的长螺栓柱12上套入紧固螺母3，拧紧紧固螺母3的同时，垫板2前侧的加强筋21伸入墙体4，对裂缝5施加了一定的压力，同时多杆螺栓1也对裂缝5预加一定的力，然后再用植筋胶将多杆螺栓1锚入墙体4。使用上述加固墙体裂缝的方法为赘入法。(2) Anchor the multi-rod bolt 1 into the wall 4: firstly drill holes at both ends of the crack in the wall, and insert the long and short bolt columns of the multi-rod bolt 1 along the holes drilled on the wall in the vertical direction. into the wall 4, put the backing plate 2 on the long bolt column 12 of the multi-rod bolt 1 passing through the wall 4, then put the fastening nut 3 on the long bolt column 12 covered with the backing plate, and tighten it At the same time as the nut 3, the reinforcing rib 21 on the front side of the backing plate 2 extends into the wall 4, exerting a certain pressure on the crack 5, and at the same time, the multi-rod bolt 1 also pre-applies a certain force to the crack 5, and then uses the reinforcement glue Anchor the multi-rod bolt 1 into the wall 4 . The method of using the above-mentioned reinforcement wall cracks is the embedding method.
通过紧固螺母3紧固长螺栓柱12的时候，可以任意在多杆螺栓1上加精确力，让多杆螺栓1承受墙体截面一定量的拉力，通过加力的大小，来控制裂缝5开裂的大小；当墙体受力时，多杆螺栓1和墙体共同工作；垫板2上设置有加强筋21，可以使加强筋21同时受力工作；采用赘入法，与全截面钢筋网加固温度裂缝相比，大大节约钢筋用量，与传统的剔缝埋筋法相比，可以有效控制裂缝的大小，综合经济效益高。When the long bolt column 12 is fastened by the fastening nut 3, a precise force can be arbitrarily added to the multi-rod bolt 1, so that the multi-rod bolt 1 can bear a certain amount of tension on the wall section, and the crack 5 can be controlled by the magnitude of the added force. The size of the crack; when the wall is stressed, the multi-rod bolt 1 and the wall work together; the backing plate 2 is provided with a reinforcing rib 21, which can make the reinforcing rib 21 work under force at the same time; Compared with the temperature cracks reinforced by mesh, it greatly saves the amount of steel bars. Compared with the traditional method of picking seams and embedding bars, it can effectively control the size of cracks and has high comprehensive economic benefits.
除说明书所述的技术特征外，均为本专业技术人员的已知技术。Except for the technical features described in the instructions, all are known technologies by those skilled in the art.
Claims (5)
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| CN201410715193.9A CN104358422B (en) | 2014-11-29 | 2014-11-29 | Pre-applied force equipment and the method in reinforcing wall crack |
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| CN201410715193.9A CN104358422B (en) | 2014-11-29 | 2014-11-29 | Pre-applied force equipment and the method in reinforcing wall crack |
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| CN104358422B true CN104358422B (en) | 2016-06-15 |
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| ES2592554B1 (en) * | 2016-10-14 | 2017-11-08 | Universitat De Les Illes Balears | METHOD OF ACTIVE REINFORCEMENT AGAINST CUTTING EFFORT OR PUNCHING IN STRUCTURAL SUPPORTING ELEMENTS, AND ACTIVE REINFORCEMENT SYSTEM |
| CN107044211A (en) * | 2017-03-28 | 2017-08-15 | 宝业西伟德混凝土预制件（合肥）有限公司 | A kind of repairing and reinforcing process of sandwich insulation exterior wall glass sheet fiber tension member damage |
| CN108060792A (en) * | 2017-12-21 | 2018-05-22 | 安徽银兔装饰材料有限公司 | Wall strength crack resistence component |
| CN108060791A (en) * | 2017-12-21 | 2018-05-22 | 安徽银兔装饰材料有限公司 | Novel wall crack resistence component |
| CN108049649A (en) * | 2017-12-21 | 2018-05-18 | 安徽银兔装饰材料有限公司 | Intelligent wall anti-cracking component |
| CN108104303A (en) * | 2017-12-21 | 2018-06-01 | 安徽银兔装饰材料有限公司 | Wall anti-cracking component |
| CN111501578B (en) * | 2020-04-14 | 2021-07-30 | 中铁二十四局集团江苏工程有限公司 | Reinforcing method of reinforcing structure for bridge pier cracks |
| CN113294008B (en) * | 2021-05-29 | 2022-07-29 | 重庆海发工程项目管理咨询有限公司 | Building crack repairing method |
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| CN202215004U (en) * | 2011-08-24 | 2012-05-09 | 贵阳铝镁设计研究院有限公司 | Reinforcing structure for cracked brick wall |
| JP5939542B2 (en) * | 2012-11-02 | 2016-06-22 | トヨタ車体株式会社 | Crack growth prevention structure |
| CN103255843A (en) * | 2013-05-29 | 2013-08-21 | 东莞市利鹏建材有限公司 | A releasable prestressed expansion joint structure for walls |
| CN103452332A (en) * | 2013-09-11 | 2013-12-18 | 中建中东有限责任公司 | Method for repairing construction engineering floor slab crack |
| CN204299205U (en) * | 2014-11-29 | 2015-04-29 | 山东省建筑科学研究院 | The pre-applied force equipment in reinforcing wall crack |
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