CN102635246A - Bearing wall reinforcing body and method for reinforcing bearing wall by using same - Google Patents
Bearing wall reinforcing body and method for reinforcing bearing wall by using same Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 18
- 230000003014 reinforcing effect Effects 0.000 title claims abstract description 18
- 229920002430 Fibre-reinforced plastic Polymers 0.000 claims abstract description 30
- 239000011151 fibre-reinforced plastic Substances 0.000 claims abstract description 29
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 19
- 239000010959 steel Substances 0.000 claims abstract description 19
- 239000004918 carbon fiber reinforced polymer Substances 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims 9
- 239000004576 sand Substances 0.000 claims 2
- 229920006231 aramid fiber Polymers 0.000 claims 1
- 230000002708 enhancing effect Effects 0.000 claims 1
- 239000003365 glass fiber Substances 0.000 claims 1
- 229920000642 polymer Polymers 0.000 claims 1
- 230000002787 reinforcement Effects 0.000 abstract description 38
- 230000008901 benefit Effects 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 5
- 238000010276 construction Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
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- 238000012423 maintenance Methods 0.000 abstract 1
- 239000006004 Quartz sand Substances 0.000 description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 7
- 239000011433 polymer cement mortar Substances 0.000 description 5
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 239000004760 aramid Substances 0.000 description 2
- 229920003235 aromatic polyamide Polymers 0.000 description 2
- 239000011083 cement mortar Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
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- 239000003292 glue Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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Abstract
一种承重墙加固体及利用其对承重墙加固的方法，其加固体包括刚性网层，所述刚性网层一侧设置有纤维增强聚合物层⑸。其优点是：本发明适用于对普通砌体承重墙的加固，把纤维增强聚合物FRP加固和钢板网、钢筋网加固的优点有机地结合起来，不仅提高砌体墙的整体性能和抗倒塌能力，而且增加砌体刚度，提高砌体轴压承载力和抗剪承载力，改善砌体抗震性能，加固效果好；本发明不仅加固效果好，可靠性高，而且操作简单，施工方便，不需要特殊的施工机具，对砌体尺寸增加较小，不影响生产，经济效益高，特别适用于对砌体结构承重墙进行大规模的维修、加固。
A load-bearing wall reinforcement and a method for reinforcing a load-bearing wall by using the reinforcement. The reinforcement includes a rigid mesh layer, and a fiber-reinforced polymer layer (5) is arranged on one side of the rigid mesh layer. Its advantages are: the present invention is applicable to the reinforcement of ordinary masonry load-bearing walls, and organically combines the advantages of fiber reinforced polymer FRP reinforcement with steel mesh and steel mesh reinforcement, not only improving the overall performance and collapse resistance of masonry walls , and increase the stiffness of the masonry, improve the axial compression bearing capacity and shear bearing capacity of the masonry, improve the seismic performance of the masonry, and have a good reinforcement effect; The special construction equipment has a small increase in the size of the masonry, does not affect production, and has high economic benefits. It is especially suitable for large-scale maintenance and reinforcement of the load-bearing walls of masonry structures.
Description
技术领域 technical field
本发明涉及土木建筑工程结构加固技术领域，具体的说是一种承重墙加固体及利用其对承重墙加固的方法。 The invention relates to the technical field of civil engineering structure reinforcement, in particular to a load-bearing wall reinforcement and a method for reinforcing the load-bearing wall by using the same.
背景技术 Background technique
砌体结构是我国一种具有悠久历史的建筑结构形式，目前，我国继续使用的许多建筑仍属于砌体结构。但是，砌体结构抗压、抗拉、抗剪强度低，抗震性能差，长期使用会出现构件开裂、承载力不足等诸多问题。另外，砌体结构的加层改造或使用功能改变等，均会造成原有结构的承载力不足，需要对承重构件进行加固来提高结构的承载力。 Masonry structure is a form of building structure with a long history in our country. At present, many buildings that continue to be used in our country still belong to masonry structure. However, the masonry structure has low compressive, tensile, and shear strengths, and poor seismic performance. Long-term use will cause many problems such as component cracking and insufficient bearing capacity. In addition, the addition of layers or changes in the use of masonry structures will result in insufficient bearing capacity of the original structure, and it is necessary to reinforce the load-bearing components to increase the bearing capacity of the structure.
目前，常用的砌体墙加固方法是钢筋网水泥砂浆加固法和外粘纤维增强聚合物（Fiber Reinforced polymer,简称FRP）加固法。对于钢筋网水泥砂浆加固法，施工工艺简单，适用性强，砌体加固后承载力有较大提高。但是，砌体结构整体性差，抵抗变形的能力弱，在一定程度上限制加固砌体承载力的提高；对于外粘纤维增强聚合物FRP加固法，可提高砌体墙的整体性，增强构件变形能力，但对砌体墙的轴压承载力作用甚微，同时，纤维增强聚合物FRP与砌体的连接较弱，易发生剥离破坏影响加固效果。 At present, the commonly used reinforcement methods for masonry walls are reinforced mesh cement mortar reinforcement method and fiber reinforced polymer (Fiber Reinforced polymer, FRP for short) reinforcement method. For the reinforcement method of reinforced mesh and cement mortar, the construction process is simple, the applicability is strong, and the bearing capacity after masonry reinforcement is greatly improved. However, the integrity of the masonry structure is poor, and the ability to resist deformation is weak, which limits the improvement of the bearing capacity of the reinforced masonry to a certain extent; for the external fiber reinforced polymer FRP reinforcement method, it can improve the integrity of the masonry wall and strengthen the deformation of components capacity, but it has little effect on the axial compressive bearing capacity of the masonry wall. At the same time, the connection between the fiber reinforced polymer FRP and the masonry is weak, and it is prone to peeling damage, which affects the reinforcement effect.
发明内容 Contents of the invention
本发明的目的是提供一种承重墙加固体及利用其对承重墙加固的方法，利用纤维增强聚合物FRP增强砌体墙的整体性和变形能力，同时利用钢板网或钢筋网提高砌体墙的承载力，力求加固工艺简单，操作方便，对结构尺寸增加小，不影响生产，经济效益高。 The purpose of the present invention is to provide a load-bearing wall reinforcement and a method for reinforcing the load-bearing wall by using the fiber reinforced polymer FRP to enhance the integrity and deformation capacity of the masonry wall, and at the same time use steel mesh or steel mesh to improve the masonry wall. The bearing capacity is high, and the reinforcement process is simple, the operation is convenient, the increase in the structure size is small, the production is not affected, and the economic benefit is high.
本发明承重墙加固体，包括刚性网层，所述刚性网层一侧设置有纤维增强聚合物层5。
The load-bearing wall reinforcement of the present invention includes a rigid mesh layer, and a fiber-reinforced
所述刚性网层的另一侧设置有粗石英砂层9。
The other side of the rigid mesh layer is provided with a coarse
所述粗石英砂层9外侧还设置有防锈、装饰层10。
The outside of the coarse
所述刚性网层为钢板网层6或钢筋网层7。
The rigid mesh layer is an expanded
所述纤维增强聚合物为碳纤维增强聚合物、玻璃纤维增强聚合物、芳纶纤维增强聚合物或玄武岩纤维增强聚合物。 The fiber-reinforced polymer is carbon fiber-reinforced polymer, glass fiber-reinforced polymer, aramid fiber-reinforced polymer or basalt fiber-reinforced polymer.
所述钢筋网层7的钢筋交叉点处设置有螺杆。
Screw rods are arranged at intersections of steel bars in the
本发明利用承重墙加固体对承重墙加固的方法，其步骤如下： The present invention utilizes the load-bearing wall reinforcing body to the method for load-bearing wall reinforcement, and its steps are as follows:
⑴对承重墙墙体进行预处理，获得平整的墙体表面； ⑴ Pretreatment of the load-bearing wall to obtain a flat wall surface;
⑵将承重墙加固体的纤维增强聚合物层一面粘贴于墙体表面； (2) Paste one side of the fiber-reinforced polymer layer of the load-bearing wall reinforcement on the surface of the wall;
⑶采用连接件将承重墙加固体和承重墙墙体紧密连接为一个整体。 (3) Connecting pieces are used to tightly connect the load-bearing wall reinforcement and the load-bearing wall body as a whole.
本发明承重墙加固体及利用其对承重墙加固的方法的优点是： The advantages of the load-bearing wall reinforcing body of the present invention and the method for using it to reinforce the load-bearing wall are:
1、本发明适用于对普通砌体承重墙的加固，把纤维增强聚合物FRP加固和钢板网、钢筋网加固的优点有机地结合起来，不仅提高砌体墙的整体性能和抗倒塌能力，而且增加砌体刚度，提高砌体轴压承载力和抗剪承载力，改善砌体抗震性能，加固效果好； 1. The present invention is applicable to the reinforcement of ordinary masonry load-bearing walls, organically combining the advantages of fiber reinforced polymer FRP reinforcement with steel mesh and steel mesh reinforcement, not only improving the overall performance and collapse resistance of masonry walls, but also Increase the stiffness of the masonry, improve the axial compression bearing capacity and shear bearing capacity of the masonry, improve the seismic performance of the masonry, and have a good reinforcement effect;
2、本发明中，钢板网或钢筋网可大大改善纤维增强聚合物FRP与砌体之间连接较弱的缺点，保证纤维增强聚合物FRP在受力过程中与砌体变形协调、共同受力，防止纤维增强聚合物FRP与砌体之间出现剥离； 2. In the present invention, steel mesh or steel mesh can greatly improve the weak connection between fiber-reinforced polymer FRP and masonry, and ensure that fiber-reinforced polymer FRP and masonry deformation are coordinated and jointly stressed during the stress process , to prevent delamination between fiber reinforced polymer FRP and masonry;
3、本发明不仅加固效果好，可靠性高，而且操作简单，施工方便，不需要特殊的施工机具，对砌体尺寸增加较小，不影响生产，经济效益高，特别适用于对砌体结构承重墙进行大规模的维修、加固。 3. The invention not only has good reinforcement effect and high reliability, but also is simple to operate, convenient to construct, does not require special construction equipment, has small increase in masonry size, does not affect production, and has high economic benefits. It is especially suitable for masonry structures The load-bearing walls were extensively repaired and reinforced.
附图说明 Description of drawings
图1为本发明承重墙加固体固定于承重墙上的结构示意图。 Fig. 1 is a schematic diagram of the structure of the load-bearing wall reinforcement of the present invention fixed on the load-bearing wall.
图2为图1的A-A向剖视图。 Fig. 2 is a sectional view taken along line A-A of Fig. 1 .
图3为本发明承重墙加固体又一实施例固定于承重墙上的结构示意图。 Fig. 3 is a structural schematic diagram of yet another embodiment of the load-bearing wall reinforcing body of the present invention fixed on the load-bearing wall.
图4为图3的B-B向剖视图。 Fig. 4 is a sectional view taken along line B-B of Fig. 3 .
其中，1为承重墙，4为聚合物水泥砂浆层，5为纤维增强聚合物层，6为钢板网层，7为钢筋网层，8为螺栓，9为粗石英砂层，10为防锈、装饰层。 Among them, 1 is the load-bearing wall, 4 is the polymer cement mortar layer, 5 is the fiber reinforced polymer layer, 6 is the expanded metal mesh layer, 7 is the steel mesh layer, 8 is the bolt, 9 is the coarse quartz sand layer, and 10 is the antirust layer , Decorative layer.
具体实施方式 Detailed ways
实施例一 Embodiment one
下面结合附图，对本发明进行进一步说明：根据图1、图2所示，一种承重墙加固体，包括刚性网层，所述刚性网层为钢板网层6，所述钢板网层6一侧设置有纤维增强聚合物层5。
Below in conjunction with accompanying drawing, the present invention is further described: according to Fig. 1, shown in Fig. 2, a kind of load-bearing wall reinforcing body comprises rigid mesh layer, and described rigid mesh layer is
所述钢板网层6的另一侧设置有粗石英砂层9。
The other side of the
所述粗石英砂层9外侧还设置有防锈、装饰层10。
The outside of the coarse
所述纤维增强聚合物为碳纤维增强聚合物CFRP。 The fiber reinforced polymer is carbon fiber reinforced polymer CFRP.
所述钢板网层6为纵、横向钢板条焊接而成。
The
一种利用承重墙加固体对承重墙加固的方法，其步骤如下： A method for reinforcing a load-bearing wall with a load-bearing wall reinforcement, the steps are as follows:
⑴铲除承重墙墙体外表面装饰层，对承重墙墙体进行钻孔、洗刷处理；采用聚合物水泥砂浆层对承重墙墙体表面进行修复、平整； (1) Remove the decorative layer on the external surface of the load-bearing wall, drill and wash the load-bearing wall; use polymer cement mortar layer to repair and level the surface of the load-bearing wall;
⑵将承重墙加固体的纤维增强聚合物层一面通过纤维粘结剂粘贴于承重墙墙体的聚合物水泥砂浆层上； (2) Paste one side of the fiber-reinforced polymer layer of the load-bearing wall reinforcement on the polymer cement mortar layer of the load-bearing wall through a fiber adhesive;
⑶采用对穿螺栓将钢板网加强锚固于承重墙墙体表面。 ⑶ The steel mesh is strengthened and anchored to the surface of the load-bearing wall by cross-through bolts.
实施例二 Embodiment two
下面结合附图，对本发明进行进一步说明：根据图3、图4所示，一种承重墙加固体，包括刚性网层，所述刚性网层为钢筋网层7，所述钢筋网层7一侧设置有纤维增强聚合物层5。
Below in conjunction with accompanying drawing, the present invention is further described: according to Fig. 3, shown in Fig. 4, a kind of load-bearing wall reinforcing body comprises rigid mesh layer, and described rigid mesh layer is
所述钢筋网层7的另一侧设置有粗石英砂层9。
The other side of the
所述粗石英砂层9外侧还设置有防锈、装饰层10。
The outside of the coarse
所述纤维增强聚合物为芳纶纤维增强聚合物AFRP。 The fiber-reinforced polymer is aramid fiber-reinforced polymer AFRP.
所述钢筋网层7为纵、横向钢筋焊接而成。
The
所述钢筋网层7的钢筋交叉点处焊有螺杆。
Screw rods are welded at the reinforcing bar intersections of the reinforcing
一种利用承重墙加固体对承重墙加固的方法，其步骤如下： A method for reinforcing a load-bearing wall with a load-bearing wall reinforcement, the steps are as follows:
⑴铲除承重墙墙体外表面装饰层，对承重墙墙体进行钻孔、洗刷处理；采用聚合物水泥砂浆层对承重墙墙体表面进行修复、平整； (1) Remove the decorative layer on the external surface of the load-bearing wall, drill and wash the load-bearing wall; use polymer cement mortar layer to repair and level the surface of the load-bearing wall;
⑵将承重墙加固体的纤维增强聚合物层一面通过纤维粘结剂粘贴于承重墙墙体的聚合物水泥砂浆层上； (2) Paste one side of the fiber-reinforced polymer layer of the load-bearing wall reinforcement on the polymer cement mortar layer of the load-bearing wall through a fiber adhesive;
⑶在承重墙墙体上开设的螺栓孔内灌胶，将焊接于钢筋网上的螺杆插入螺栓孔内，在承重墙墙体另一端锚固。 (3) Fill the bolt holes on the load-bearing wall with glue, insert the screw welded on the steel mesh into the bolt holes, and anchor at the other end of the load-bearing wall.
以上所述的具体实施例，对本发明的目的、技术方案和有益结果进行了进一步的详细说明，所应理解的是，以上所述仅为本发明的具体实施例而已，并不用于限制本发明，凡在本发明的精神和原则之类，所做的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。 The specific embodiments described above have further described the purpose, technical solutions and beneficial results of the present invention in detail. It should be understood that the above descriptions are only specific embodiments of the present invention and are not intended to limit the present invention. , Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.
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| CN105863290A (en) * | 2016-04-20 | 2016-08-17 | 上海市建筑科学研究院 | Method for reinforcing masonry wall without structural columns by sticking environmentally-friendly textile fabric |
| CN105888283A (en) * | 2016-05-10 | 2016-08-24 | 郑州大学 | Method for reinforcing reinforced concrete shear wall structure by using FRP grid strengthened ECC strips |
| CN105888280A (en) * | 2016-04-20 | 2016-08-24 | 上海市建筑科学研究院 | Method for reinforcing brickwork wall by sticking bamboo mat |
| CN106948610A (en) * | 2017-05-03 | 2017-07-14 | 福州大学 | FRP networks and construction method for reinforcing wall |
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| CN116290890A (en) * | 2023-03-22 | 2023-06-23 | 西京学院 | Brick wall reinforcing structure and construction method thereof |
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| CN105888283A (en) * | 2016-05-10 | 2016-08-24 | 郑州大学 | Method for reinforcing reinforced concrete shear wall structure by using FRP grid strengthened ECC strips |
| CN106948610A (en) * | 2017-05-03 | 2017-07-14 | 福州大学 | FRP networks and construction method for reinforcing wall |
| CN109914849A (en) * | 2019-04-02 | 2019-06-21 | 郑州航空工业管理学院 | A kind of FRP wall reinforcement device and reinforcement method |
| CN116290890A (en) * | 2023-03-22 | 2023-06-23 | 西京学院 | Brick wall reinforcing structure and construction method thereof |
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Application publication date: 20120815 |