CN206873767U - A kind of reinforcing bar grout sleeve for the connection of prefabricated concrete structure ductility - Google Patents
A kind of reinforcing bar grout sleeve for the connection of prefabricated concrete structure ductility Download PDFInfo
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- CN206873767U CN206873767U CN201720477277.2U CN201720477277U CN206873767U CN 206873767 U CN206873767 U CN 206873767U CN 201720477277 U CN201720477277 U CN 201720477277U CN 206873767 U CN206873767 U CN 206873767U
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- 239000004567 concrete Substances 0.000 title claims abstract description 29
- 239000011440 grout Substances 0.000 title claims description 28
- 230000003014 reinforcing effect Effects 0.000 title claims description 17
- 239000000463 material Substances 0.000 claims description 12
- 238000007789 sealing Methods 0.000 claims description 12
- 239000000428 dust Substances 0.000 claims description 9
- 230000037431 insertion Effects 0.000 claims 10
- 238000003780 insertion Methods 0.000 claims 10
- 229910000831 Steel Inorganic materials 0.000 abstract description 65
- 239000010959 steel Substances 0.000 abstract description 65
- 238000005266 casting Methods 0.000 abstract description 11
- 238000010276 construction Methods 0.000 description 21
- 238000000034 method Methods 0.000 description 4
- 230000002787 reinforcement Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000002708 enhancing effect Effects 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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Abstract
本实用新型涉及一种用于装配式混凝土结构延性连接的钢筋灌浆套筒，包括两段套筒、灌浆孔和排浆孔，第一段灌浆套筒作为钢筋的连接器，用于连接不同构件间的钢筋，第二段贯通套筒为钢筋的贯通筒，用于钢筋通过后浇层，两段套筒之间通过螺纹连接，灌浆孔设在第一段灌浆套筒的下部，排浆孔设在第二段贯通套筒的上部。本实用新型提供的钢筋灌浆套筒，其最大的特点是该灌浆套筒为组合式，一个预制构件的外伸钢筋通过第二段贯通套筒穿过后浇层，插入另一个预制构件的第一段灌浆套筒内，然后灌浆将不同预制构件间的钢筋连接，确保纵向钢筋能有效传力，从而灌浆套筒的位置也能够使得连接部位在进入塑性状态下，具有满足要求的塑性变形能力。
The utility model relates to a steel bar grouting sleeve used for ductile connection of assembled concrete structures, which comprises two sections of sleeves, a grouting hole and a grouting hole, the first section of the grouting sleeve is used as a connector for steel bars and is used for connecting different components The second section of the through-sleeve is the through-sleeve of the steel bar, which is used for the steel bar to pass through the post-casting layer. The two sections of the sleeve are connected by threads, and the grouting hole is set at the lower part of the first section of the grouting sleeve. Set on the upper part of the second section through the sleeve. The steel bar grouting sleeve provided by the utility model has the biggest feature that the grouting sleeve is a combined type, and the outstretched steel bar of a prefabricated component passes through the post-casting layer through the second section of the through sleeve, and is inserted into the first part of another prefabricated component. The section grouting sleeve, and then grouting connects the steel bars between different prefabricated components to ensure that the longitudinal steel bars can effectively transmit force, so that the position of the grouting sleeve can also make the connection parts have the required plastic deformation capacity when they enter the plastic state.
Description
技术领域technical field
本实用新型涉及一种装配式混凝土结构构筑物的预制混凝土构件连接施工技术领域，具体是指装配式建筑结构中一种用于装配式混凝土结构延性连接的钢筋灌浆套筒。The utility model relates to the technical field of prefabricated concrete member connection construction of an assembled concrete structure structure, in particular to a steel bar grouting sleeve used for the ductile connection of an assembled concrete structure in an assembled building structure.
背景技术Background technique
预制装配式钢筋混凝土结构在欧美、日本等发达国家已经具有较多的实践应用和较为成熟的技术研究。近年来，国家发展绿色建筑，大力发展装配式建筑，促进建筑业转型升级。随着我国“建筑工业化、住宅产业化”进程的加快，装配式结构建筑的应用日益广泛，国内对装配式结构建筑的实践应用及理论研究不断深入。Prefabricated reinforced concrete structures have already had many practical applications and relatively mature technical research in developed countries such as Europe, America and Japan. In recent years, the country has developed green buildings, vigorously developed prefabricated buildings, and promoted the transformation and upgrading of the construction industry. With the acceleration of the process of "construction industrialization and housing industrialization" in my country, the application of prefabricated structural buildings is becoming more and more extensive, and the practical application and theoretical research of prefabricated structural buildings in China is deepening.
装配式混凝土结构中预制构件的连接是影响结构安全的关键性技术之一，预制构件之间连接包括湿连接和干连接，而湿连接的关键性技术就是不同构件之间的钢筋的连接，钢筋连接的施工技术对施工质量和安装效率有较大的影响，保证施工质量、提高施工效率、降低施工难度是建筑工业化不断追求的目标。国家行业标准《装配式混凝土结构技术规程》(JGJ 1-2014)的颁布和执行，对装配式混凝土结构的设计、施工和验收起到了重要作用，其中对预制构件钢筋的连接方法也进行了有关的规定，规程中关键节点内的钢筋连接主要采用灌浆套筒连接，该连接方法可应用于预制框架柱、预制剪力墙竖向钢筋连接、预制连梁水平钢筋连接以及框架节点、剪力墙节点域内的钢筋连接。“延性连接”是指结构在地震作用下，连接部位可以进入塑性状态并具有满足要求的塑性变形能力的连接。在连接部位进入塑性状态下，要使其有满足要求的塑性变形能力，就要使得连接部位形成塑性铰，而按照目前装配式建筑的连接形式，在柱底和剪力墙底用灌浆套筒将上下层的钢筋连接，很难在连接部位形成塑性铰。为解决装配式延性连接的技术问题，一种用于装配式混凝土结构延性连接的钢筋灌浆套筒显得尤为重要。The connection of prefabricated components in prefabricated concrete structures is one of the key technologies that affect structural safety. The connections between prefabricated components include wet connections and dry connections, and the key technology of wet connections is the connection of steel bars between different components. The construction technology of the connection has a great influence on the construction quality and installation efficiency. Ensuring the construction quality, improving the construction efficiency and reducing the difficulty of construction are the goals of construction industrialization. The promulgation and implementation of the national industry standard "Technical Regulations for Prefabricated Concrete Structures" (JGJ 1-2014) has played an important role in the design, construction and acceptance of prefabricated concrete structures. According to the regulations, the steel bars in the key nodes in the regulations are mainly connected by grouting sleeves. This connection method can be applied to prefabricated frame columns, vertical steel bars in precast shear walls, horizontal steel bars in precast coupling beams, frame nodes, and shear walls. Rebar connections within the nodal domain. "Ductility connection" refers to the connection that the connection part of the structure can enter the plastic state and have the required plastic deformation capacity under the action of earthquake. When the connection part enters the plastic state, in order to make it have the required plastic deformation capacity, it is necessary to make the connection part form a plastic hinge, and according to the current connection form of the prefabricated building, the grouting sleeve is used at the bottom of the column and the bottom of the shear wall It is difficult to form a plastic hinge at the connecting part to connect the steel bars of the upper and lower layers. In order to solve the technical problems of prefabricated ductile connections, a steel grouting sleeve for ductile connections of prefabricated concrete structures is particularly important.
实用新型内容Utility model content
本实用新型的目的是提供一种用于装配式混凝土结构延性连接的钢筋灌浆套筒，可解决装配式混凝土结构延性连接中纵向钢筋连接问题，确保纵向钢筋能有效传力，从而也能够使得连接部位在进入塑性状态下，具有满足要求的塑性变形能力；并且可以快速高效，简单方便地施工作业，从而保证施工质量、提高施工效率、降低施工难度。The purpose of this utility model is to provide a steel bar grouting sleeve for the ductile connection of assembled concrete structures, which can solve the problem of longitudinal steel bar connection in the ductile connection of assembled concrete structures, ensure that the longitudinal steel bars can effectively transmit force, and thus can also make the connection When the part enters the plastic state, it has the plastic deformation ability to meet the requirements; and it can be constructed quickly, efficiently, simply and conveniently, so as to ensure the construction quality, improve the construction efficiency and reduce the construction difficulty.
本实用新型的上述目的通过采取以下技术方案予以实现：The above-mentioned purpose of the utility model is achieved by taking the following technical solutions:
一种用于装配式混凝土结构延性连接的钢筋灌浆套筒，其特征在于，包括两段套筒、灌浆孔和排浆孔，所述两段套筒为第一段灌浆套筒和第二段贯通套筒，所述第一段灌浆套筒作为钢筋的连接器，用于连接不同构件间的钢筋，所述第二段贯通套筒为钢筋的贯通筒，用于钢筋通过后浇层，两段套筒之间通过螺纹连接，所述灌浆孔设在第一段灌浆套筒的下部，所述排浆孔设在第二段贯通套筒的上部。A reinforcement grouting sleeve for ductile connection of prefabricated concrete structures, characterized in that it includes two sections of sleeves, grouting holes and grouting holes, the two sections of sleeves are the first section of grouting sleeve and the second section of the sleeve Through the sleeve, the first section of the grouting sleeve is used as a connector for the steel bar to connect the steel bars between different components, and the second section of the through sleeve is a through sleeve for the steel bar, which is used for the steel bar to pass through the post-casting layer. The section sleeves are connected by threads, the grouting hole is arranged at the lower part of the first section grouting sleeve, and the grout discharge hole is provided at the upper part of the second section through sleeve.
作为本实用新型的一种改进，所述第一段灌浆套筒包括灌浆套筒本体和定位齿，所述第二段贯通套筒包括贯通套筒本体，所述定位齿位于灌浆套筒本体的上端，所述定位齿的外径与所述贯通套筒本体的内径相适配，所述定位齿的外表面设有外螺纹，所述贯通套筒本体的下端设有与所述定位齿的外螺纹相适配的内螺纹，所述第二段贯通套筒与所述第一段灌浆套筒之间通过所述定位齿螺纹连接。As an improvement of the present utility model, the first section of the grouting sleeve includes a grouting sleeve body and positioning teeth, the second section of through sleeve includes a through sleeve body, and the positioning teeth are located at the center of the grouting sleeve body. At the upper end, the outer diameter of the positioning tooth is adapted to the inner diameter of the through-sleeve body, the outer surface of the positioning tooth is provided with external threads, and the lower end of the through-sleeve body is provided with a The external thread is matched with the internal thread, and the second section of the through sleeve and the first section of the grouting sleeve are threadedly connected by the positioning teeth.
进一步的，所述灌浆套筒本体的下端设有密封阀瓣、上端设有防尘盖和密封阀瓣。Further, the lower end of the grouting sleeve body is provided with a sealing valve disc, and the upper end is provided with a dustproof cover and a sealing valve disc.
作为本实用新型的另一种改进，所述灌浆套筒本体的下端设有钢筋连接口，所述钢筋连接口的内腔设有与下层预制构件钢筋连接的连接螺纹。As another improvement of the utility model, the lower end of the grouting sleeve body is provided with a steel bar connection port, and the inner cavity of the steel bar connection port is provided with a connecting thread for connecting with the steel bar of the lower prefabricated component.
进一步的，所述灌浆套筒本体的上端设有防尘盖。Further, the upper end of the grouting sleeve body is provided with a dustproof cover.
进一步的，所述贯通套筒本体的上端设有防尘盖和密封阀瓣。Further, the upper end of the through-sleeve body is provided with a dustproof cover and a sealing disc.
作为本实用新型的进一步改进，所述灌浆套筒本体内设有用于增强灌浆料与套筒之间粘结咬合力的剪力键。As a further improvement of the utility model, the grouting sleeve body is provided with a shear force key for enhancing the bonding force between the grouting material and the sleeve.
进一步的，所述剪力键是环状矩形凸起剪力键或是环状半圆形凸起剪力键。Further, the shear key is an annular rectangular raised shear key or an annular semicircular raised shear key.
进一步的，所述灌浆孔设在所述灌浆套筒本体的下部，所述排浆孔设在所述贯通套筒本体的上部。Further, the grouting holes are provided at the lower part of the grouting sleeve body, and the grout discharge holes are provided at the upper part of the through-sleeve body.
与现有技术相比，本实用新型具有如下显著效果：Compared with the prior art, the utility model has the following remarkable effects:
(1)本实用新型中钢筋灌浆套筒为组合式，包括第一段灌浆套筒和第二段贯通套筒，两段套筒通过螺纹连接。第一段灌浆套筒为钢筋的连接器，与传统的灌浆套筒相比，其作用是一样的，用来连接不同构件间的钢筋，但其形式上有些差异，该灌浆套筒上只有灌浆孔，没有排浆孔，并在两段套筒连接处的端部上设有定位齿，定位齿具有连接两段套筒和套筒安装定位的作用。第二段贯通套筒为钢筋的贯通筒，形式上与传统钢管一样，但是其上部有排浆孔，其作用是预埋在后浇层内，使得钢筋能够穿过后浇层。(1) The steel bar grouting sleeve in the utility model is a combined type, including a first section of the grouting sleeve and a second section of the through sleeve, and the two sections of the sleeve are connected by threads. The first section of the grouting sleeve is a connector for steel bars. Compared with the traditional grouting sleeve, its function is the same. It is used to connect the steel bars between different components, but there are some differences in its form. There is only grouting on the grouting sleeve Hole, no slurry discharge hole, and positioning teeth are provided on the end of the joint of the two sections of the sleeve, the positioning teeth have the function of connecting the two sections of the sleeve and installing and positioning the sleeve. The second section of the through-sleeve is the through-tube of the steel bar, which is the same in form as the traditional steel pipe, but there is a grout hole on the upper part, and its function is to be embedded in the post-cast layer so that the steel bar can pass through the post-cast layer.
(2)本实用新型中灌浆套筒的预埋在预制构件(预制柱或预制剪力墙)的顶部，可增强连接的节点抗震性能。目前国内灌浆套筒预埋在预制构件的底部，将预制构件的顶部竖向钢筋外伸，然后将上一层的预制构件的底部灌浆套筒套在该层的预制构件的顶部竖向外伸钢筋上并灌浆，将上下层的预制构件的钢筋连接，但是该连接方式有一个缺陷，一般预制构件的塑性铰形成于预制构件的底部，然而由于灌浆套筒的作用，使得预制构件的底部形成不了塑性铰，这样导致在灌浆套筒下端位置处将该层顶部钢筋拉断，从而发生脆性破坏。本实用新型中灌浆套筒的布置位置在预制构件的顶部，在工厂制作预制构件时，将第一段灌浆套筒预埋于预制构件顶部，在现场浇筑后浇层之前，将第二段贯通套筒连接在第一段灌浆套筒的定位齿上，然后现场绑扎钢筋浇筑混凝土，在现浇层达到规定强度后，然后将上一层预制构件的底部外伸钢筋通过第二段贯通套筒插入第一段灌浆套筒内并灌浆，将上下层的预制构件的钢筋连接，由于灌浆套筒埋于预制构件顶部内，预制构件底部就能形成塑性铰，从而也不会直接将底部钢筋拉断，产生塑性变形。(2) In the utility model, the grouting sleeve is pre-embedded on the top of the prefabricated component (prefabricated column or prefabricated shear wall), which can enhance the seismic performance of the connected nodes. At present, the domestic grouting sleeve is pre-buried at the bottom of the prefabricated component, and the top vertical steel bar of the prefabricated component is stretched out, and then the bottom grouting sleeve of the prefabricated component of the previous layer is placed on the top of the prefabricated component of the layer and vertically stretched out. The steel bars are put on and grouted to connect the steel bars of the upper and lower prefabricated components, but this connection method has a defect. Generally, the plastic hinge of the prefabricated component is formed at the bottom of the prefabricated component, but due to the action of the grouting sleeve, the bottom of the prefabricated component is formed. There is no plastic hinge, which leads to the breaking of the steel bar at the top of the layer at the lower end of the grouting sleeve, resulting in brittle failure. In the utility model, the arrangement position of the grouting sleeve is on the top of the prefabricated component. When the prefabricated component is manufactured in the factory, the first section of the grouting sleeve is pre-embedded on the top of the prefabricated component, and the second section is penetrated before the post-casting layer is poured on site. The sleeve is connected to the positioning teeth of the first section of the grouting sleeve, and then the reinforcement is bound on site to pour the concrete. After the cast-in-place layer reaches the specified strength, the protruding steel bars at the bottom of the upper layer of prefabricated components are passed through the second section of the through sleeve. Insert the first section of grouting sleeve and grout to connect the steel bars of the upper and lower prefabricated components. Since the grouting sleeve is buried in the top of the prefabricated component, a plastic hinge can be formed at the bottom of the prefabricated component, so that the bottom steel bar will not be directly pulled broken, resulting in plastic deformation.
综上所述，本实用新型提供的钢筋灌浆套筒，其最大的特点是该灌浆套筒为组合式，第一段灌浆套筒为钢筋的连接器，第二段贯通套筒为钢筋的贯通筒，一个预制构件的外伸钢筋通过第二段贯通套筒穿过后浇层，插入另一个预制构件的第一段灌浆套筒内，然后灌浆将不同预制构件间的钢筋连接，确保纵向钢筋能有效传力，从而灌浆套筒的位置也能够使得连接部位在进入塑性状态下，具有满足要求的塑性变形能力。此外采用本实用新型提供的钢筋灌浆套筒对施工作业也具有快速高效，简单方便的作用，从而保证施工质量、提高施工效率、降低施工难度。In summary, the steel bar grouting sleeve provided by the utility model has the biggest feature that the grouting sleeve is a combined type, the first section of the grouting sleeve is a connector for the steel bar, and the second section of the through sleeve is the through-through of the steel bar. The extended steel bars of one prefabricated component pass through the post-casting layer through the second through-sleeve, and are inserted into the first grouting sleeve of another prefabricated component, and then grouting connects the steel bars between different prefabricated components to ensure that the longitudinal reinforcement can Effective force transmission, so that the position of the grouting sleeve can also make the connection part have a plastic deformation capacity that meets the requirements when it enters a plastic state. In addition, the steel grouting sleeve provided by the utility model also has fast, efficient, simple and convenient effects on construction operations, thereby ensuring construction quality, improving construction efficiency, and reducing construction difficulty.
附图说明Description of drawings
图1为本实用新型中半灌浆套筒的结构截面示意图；Fig. 1 is the structural cross-sectional schematic diagram of semi-grouting sleeve in the utility model;
图2为本实用新型中半灌浆套筒的施工结构截面示意图；Fig. 2 is the schematic cross-sectional view of the construction structure of the semi-grouting sleeve in the utility model;
图3为本实用新型中全灌浆套筒的结构截面示意图；Fig. 3 is the schematic cross-sectional view of the structure of the full grouting sleeve in the utility model;
图4为本实用新型中全灌浆套筒的施工结构截面示意图。Fig. 4 is a schematic cross-sectional view of the construction structure of the full grouting sleeve in the utility model.
图中，1、灌浆套筒本体；2、贯通套筒本体；3、定位齿；4、剪力键；5、灌浆孔；6、排浆孔；7、下层预制构件钢筋；8、上层预制构件钢筋；9、密封阀瓣；10、防尘盖；11、钢筋连接口；12、连接螺纹；13、外螺纹；14、内螺纹；15、灌浆料。In the figure, 1. Grouting sleeve body; 2. Through sleeve body; 3. Positioning tooth; 4. Shear force key; 5. Grouting hole; 6. Grouting hole; Component reinforcement; 9. Sealing disc; 10. Dust cover; 11. Rebar connection; 12. Connecting thread; 13. External thread; 14. Internal thread; 15. Grouting material.
具体实施方式detailed description
下面结合附图对本实用新型作进一步的描述。Below in conjunction with accompanying drawing, the utility model is further described.
如图1、2所示，本实用新型实施例1用于装配式混凝土结构延性连接的钢筋半灌浆套筒，包括两段套筒、灌浆孔5和排浆孔6，两段套筒为第一段灌浆套筒和第二段贯通套筒，第一段灌浆套筒作为钢筋的连接器，第二段贯通套筒为钢筋的贯通筒。第一段灌浆套筒包括灌浆套筒本体1和定位齿3，第二段贯通套筒包括贯通套筒本体2，定位齿3位于灌浆套筒本体1的上端，定位齿3的外径与贯通套筒本体2的内径相适配，定位齿3的外表面设有外螺纹13，贯通套筒本体2的下端设有与定位齿3的外螺纹13相适配的内螺纹14，第二段贯通套筒与第一段灌浆套筒之间通过定位齿3螺纹连接。灌浆套筒本体1的下端设有钢筋连接口11，钢筋连接口11的内腔设有与下层预制构件钢筋7连接的连接螺纹12。灌浆套筒本体1的下端无需设置密封阀瓣9、上端设有防尘盖10。灌浆套筒本体1内设有用于增强灌浆料15与套筒之间粘结咬合力的剪力键4，剪力键4是环状矩形凸起剪力键或是环状半圆形凸起剪力键。灌浆孔5设在所述灌浆套筒本体1的下部，排浆孔6设在贯通套筒本体2的上部。As shown in Figures 1 and 2, Example 1 of the utility model is used for the reinforced semi-grouting sleeve for the ductile connection of prefabricated concrete structures, including two sleeves, grouting holes 5 and grouting holes 6, and the two sleeves are the first One section of grouting sleeve and the second section of through sleeve, the first section of grouting sleeve is used as the connector of the steel bar, and the second section of the through sleeve is the through tube of the steel bar. The first section of the grouting sleeve includes the grouting sleeve body 1 and the positioning teeth 3, the second section of the through sleeve includes the through sleeve body 2, the positioning teeth 3 are located at the upper end of the grouting sleeve body 1, and the outer diameter of the positioning teeth 3 is the same as the through hole. The inner diameter of the sleeve body 2 is compatible, the outer surface of the positioning tooth 3 is provided with an external thread 13, and the lower end of the sleeve body 2 is provided with an internal thread 14 that is compatible with the external thread 13 of the positioning tooth 3. The second section The through sleeve and the first section of the grouting sleeve are threadedly connected by positioning teeth 3 . The lower end of the grouting sleeve body 1 is provided with a reinforcing bar connecting port 11, and the inner cavity of the reinforcing bar connecting port 11 is provided with a connecting thread 12 connected with the reinforcing bar 7 of the lower prefabricated member. The lower end of the grouting sleeve body 1 does not need to be provided with a sealing disc 9, and the upper end is provided with a dustproof cover 10. The grouting sleeve body 1 is provided with a shear key 4 for enhancing the bonding force between the grouting material 15 and the sleeve. The shear key 4 is an annular rectangular raised shear key or an annular semicircular protrusion. Shear key. The grouting hole 5 is arranged at the lower part of the grouting sleeve body 1 , and the grouting hole 6 is arranged at the upper part of the through sleeve body 2 .
在图2所述的施工作业实施例中，首先将下层预制构件钢筋7与灌浆套筒本体1下端的钢筋连接口11螺纹连接，并将防尘盖10安装在灌浆套筒本体1上端，然后绑扎钢筋浇筑混凝土，将第一段灌浆套筒预埋于预制构件的顶端，此时灌浆套筒本体1与定位齿3的结合面所在平面与预制构件上表面重合，定位齿3外露于预制构件上表面；安装好预制构件后，取下第一段灌浆套筒上端的防尘盖10，将第二段贯通套筒通过定位齿3与第一段灌浆套筒连接，并在贯通套筒本体2的上端安装防尘盖10，然后绑扎钢筋浇筑混凝土，将贯通套筒本体2预埋于后浇层内，在后浇层养护达到规定的强度后，取下贯通套筒本体2上端的防尘盖10，安装密封阀瓣9，将上层预制构件钢筋8穿过密封阀瓣9，通过第二段贯通套筒穿过后浇层，插入第一段灌浆套筒空腔内，安装固定预制构件，从灌浆套筒本体1下部的灌浆孔5灌入灌浆料15，直至贯通套筒本体2上部的排浆孔6溢出灌浆料15。经过一段时间的养护，灌浆料15完全凝固并达到规定强度后，与下层预制构件钢筋7、上层预制构件钢筋8以及灌浆套筒本体1内置的剪力键4形成化学胶结力、机械咬合力以及握裹力。In the construction operation embodiment described in Fig. 2, at first the lower prefabricated component steel bar 7 is screwed to the steel bar connecting port 11 at the lower end of the grouting sleeve body 1, and the dust cover 10 is installed on the grouting sleeve body 1 upper end, and then Bind the steel bars to pour concrete, and pre-embed the first section of the grouting sleeve on the top of the prefabricated component. At this time, the plane where the joint surface of the grouting sleeve body 1 and the positioning tooth 3 coincides with the upper surface of the prefabricated component, and the positioning tooth 3 is exposed on the prefabricated component. Upper surface: after the prefabricated components are installed, remove the dust cover 10 on the upper end of the first section of the grouting sleeve, connect the second section of the through sleeve with the first section of the grouting sleeve through the positioning teeth 3, and place it on the through sleeve body Install the dust cover 10 on the upper end of 2, then bind the steel bars to pour concrete, pre-embed the through-sleeve body 2 in the post-casting layer, and remove the anti-proof cover on the upper end of the through-sleeve body 2 after the post-casting layer curing reaches the specified strength. Dust cover 10, install the sealing disc 9, pass the steel bar 8 of the upper prefabricated component through the sealing disc 9, pass through the second through-sleeve through the post-casting layer, insert it into the cavity of the first grouting sleeve, install and fix the prefabricated component , pour the grouting material 15 from the grouting hole 5 at the bottom of the grouting sleeve body 1 until the grouting material 15 overflows through the grouting hole 6 at the top of the sleeve body 2 . After a period of maintenance, after the grouting material 15 is completely solidified and reaches the specified strength, it will form chemical bonding force, mechanical bite force and Grip.
如图3、4所示，本实用新型用于实施例2用于装配式混凝土结构延性连接的钢筋全灌浆套筒，包括两段套筒、灌浆孔5和排浆孔6，两段套筒为第一段灌浆套筒和第二段贯通套筒，第一段灌浆套筒作为钢筋的连接器，第二段贯通套筒为钢筋的贯通筒。第一段灌浆套筒包括灌浆套筒本体1和定位齿3，第二段贯通套筒包括贯通套筒本体2，定位齿3位于灌浆套筒本体1的上端，定位齿3的外径与贯通套筒本体2的内径相适配，定位齿3的外表面设有外螺纹13，贯通套筒本体2的下端设有与定位齿3的外螺纹13相适配的内螺纹14，第二段贯通套筒与第一段灌浆套筒之间通过定位齿3螺纹连接。灌浆套筒本体1的下端设有密封阀瓣9、上端设有防尘盖10。灌浆套筒本体1内设有用于增强灌浆料15与套筒之间粘结咬合力的剪力键4，剪力键4是环状矩形凸起剪力键或是环状半圆形凸起剪力键。灌浆孔5设在所述灌浆套筒本体1的下部，排浆孔6设在贯通套筒本体2的上部。As shown in Figures 3 and 4, the utility model is used in the steel bar full grouting sleeve for the ductile connection of the assembled concrete structure in Embodiment 2, including two sections of sleeves, grouting holes 5 and grouting holes 6, and two sections of sleeves It is the first section of grouting sleeve and the second section of through sleeve, the first section of grouting sleeve is used as the connector of the steel bar, and the second section of the through sleeve is the through tube of the steel bar. The first section of the grouting sleeve includes the grouting sleeve body 1 and the positioning teeth 3, the second section of the through sleeve includes the through sleeve body 2, the positioning teeth 3 are located at the upper end of the grouting sleeve body 1, and the outer diameter of the positioning teeth 3 is the same as the through hole. The inner diameter of the sleeve body 2 is compatible, the outer surface of the positioning tooth 3 is provided with an external thread 13, and the lower end of the sleeve body 2 is provided with an internal thread 14 that is compatible with the external thread 13 of the positioning tooth 3. The second section The through sleeve and the first section of the grouting sleeve are threadedly connected by positioning teeth 3 . The lower end of the grouting sleeve body 1 is provided with a sealing disc 9 and the upper end is provided with a dustproof cover 10 . The grouting sleeve body 1 is provided with a shear key 4 for enhancing the bonding force between the grouting material 15 and the sleeve. The shear key 4 is an annular rectangular raised shear key or an annular semicircular protrusion. Shear key. The grouting hole 5 is arranged at the lower part of the grouting sleeve body 1 , and the grouting hole 6 is arranged at the upper part of the through sleeve body 2 .
在图4所述的施工作业实施例中，首先将下层预制构件钢筋7穿过密封阀瓣9，并伸入灌浆套筒本体1空腔内，然后将灌浆套筒本体1固定并绑扎钢筋浇筑混凝土，将第一段灌浆套筒预埋于预制构件的顶端，此时灌浆套筒本体1与定位齿3的结合面所在平面与预制构件上表面重合，定位齿3外露于预制构件上表面；安装好预制构件后，取下灌浆套筒本体1上端的防尘盖10，将第二段贯通套筒通过定位齿3与第一段灌浆套筒连接，并在贯通套筒本体2的上端安装防尘盖10，然后绑扎钢筋浇筑混凝土，将贯通套筒本体2预埋于后浇层内，在后浇层养护达到规定的强度后，取下贯通套筒本体2上端的防尘盖10，安装密封阀瓣9，将上层预制构件钢筋8穿过密封阀瓣9，通过第二段贯通套筒穿过后浇层，插入第一段灌浆套筒空腔内，安装固定预制构件，从灌浆套筒本体1下部的灌浆孔5灌入灌浆料11，直至贯通套筒本体2上部的排浆孔6溢出灌浆料11。经过一段时间的养护，灌浆料11完全凝固并达到规定强度后，与下层预制构件钢筋7、上层预制构件钢筋8以及灌浆套筒本体1内置的剪力键4形成化学胶结力、机械咬合力以及握裹力。In the construction work example shown in Fig. 4, firstly, the steel bar 7 of the lower prefabricated component passes through the sealing valve disc 9, and extends into the cavity of the grouting sleeve body 1, and then fixes the grouting sleeve body 1 and binds the steel bars for pouring. For concrete, the first section of grouting sleeve is pre-embedded on the top of the prefabricated component. At this time, the plane where the joint surface of the grouting sleeve body 1 and the positioning tooth 3 coincides with the upper surface of the prefabricated component, and the positioning tooth 3 is exposed on the upper surface of the prefabricated component; After installing the prefabricated components, remove the dust cover 10 on the upper end of the grouting sleeve body 1, connect the second section of the through sleeve with the first section of the grouting sleeve through the positioning teeth 3, and install it on the upper end of the through sleeve body 2. Dust-proof cover 10, and then tying steel bars to pour concrete, pre-embed the through-sleeve body 2 in the post-cast layer, and remove the dust-proof cover 10 on the upper end of the through-sleeve body 2 after the post-cast layer is cured to reach the specified strength, Install the sealing valve disc 9, pass the steel bar 8 of the upper prefabricated component through the sealing valve disc 9, pass through the second through-sleeve through the post-casting layer, insert it into the cavity of the first segment of the grouting sleeve, install and fix the prefabricated component, and start from the grouting sleeve The grouting hole 5 at the lower part of the sleeve body 1 is filled with the grouting material 11 until the grouting hole 6 passing through the upper part of the sleeve body 2 overflows the grouting material 11 . After a period of maintenance, after the grouting material 11 is completely solidified and reaches the specified strength, it will form chemical bonding force, mechanical bite force and Grip.
本实用新型是一种用于装配式混凝土结构延性连接的钢筋灌浆套筒，其最大的特点是该灌浆套筒为组合式，第一段灌浆套筒为钢筋的连接器，其作用为连接不同预制构件间的钢筋，第二段贯通套筒为钢筋的贯通筒，其作用为使钢筋通过后浇层；上层预制构件钢筋通过第二段贯通套筒穿过后浇层，插入下层预制构件的第一段灌浆套筒内，然后灌入灌浆料将上下层预制构件间的钢筋连接，确保纵向钢筋能有效传力，从而灌浆套筒的位置也能够使得连接部位在进入塑性状态下，具有满足要求的塑性变形能力。The utility model is a steel bar grouting sleeve used for the ductile connection of assembled concrete structures. For the steel bars between the prefabricated components, the second through-sleeve is the through-tube for the steel bars, and its function is to allow the steel bars to pass through the post-casting layer; the upper-layer prefabricated component steel bars pass through the post-casting layer through the second through-sleeve, and are inserted into the first layer of the lower prefabricated components. A section of grouting sleeve, and then pour grouting material to connect the steel bars between the upper and lower prefabricated components to ensure that the longitudinal steel bars can effectively transmit force, so that the position of the grouting sleeve can also make the connection parts meet the requirements when they enter the plastic state plastic deformation capacity.
上述实施例并不是对本实用新型保护范围的限定，本实用新型的实施方式不限于此，凡此种种根据本实用新型的上述内容或按照本领域的普通技术知识和惯用手段，在不脱离本实用新型上述基本技术思想前提下，对本实用新型上述结构做出的其它多种形式的修改、替换或变更，均应落在本实用新型的保护范围之内。Above-mentioned embodiment is not the limitation to protection scope of the present utility model, and the implementation mode of the present utility model is not limited thereto, all these according to the above-mentioned content of the utility model or according to the common technical knowledge and conventional means in this field, without departing from the present utility model Under the premise of the above-mentioned basic technical ideas of the new invention, other various forms of modification, replacement or change made to the above-mentioned structure of the utility model should fall within the protection scope of the utility model.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107023121A (en) * | 2017-04-28 | 2017-08-08 | 广东省建科建筑设计院有限公司 | A kind of reinforcing bar grout sleeve connected for prefabricated concrete structure ductility |
| CN109457596A (en) * | 2018-10-22 | 2019-03-12 | 北京工业大学 | Prefabricated assembled pier connection structure and construction method |
| CN110258309A (en) * | 2019-07-08 | 2019-09-20 | 中铁二院工程集团有限责任公司 | A standard segmental pier column and its assembly method |
| CN111236423A (en) * | 2020-01-06 | 2020-06-05 | 三箭建设工程集团有限公司 | Semi-dry type connecting joint of frame beam and column and construction method thereof |
| CN113216510A (en) * | 2021-03-04 | 2021-08-06 | 北京工业大学 | Grouting sleeve connection assembly type concrete member with ECC pipe |
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2017
- 2017-04-28 CN CN201720477277.2U patent/CN206873767U/en not_active Withdrawn - After Issue
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107023121A (en) * | 2017-04-28 | 2017-08-08 | 广东省建科建筑设计院有限公司 | A kind of reinforcing bar grout sleeve connected for prefabricated concrete structure ductility |
| CN109457596A (en) * | 2018-10-22 | 2019-03-12 | 北京工业大学 | Prefabricated assembled pier connection structure and construction method |
| CN110258309A (en) * | 2019-07-08 | 2019-09-20 | 中铁二院工程集团有限责任公司 | A standard segmental pier column and its assembly method |
| CN110258309B (en) * | 2019-07-08 | 2024-01-23 | 中铁二院工程集团有限责任公司 | Standard segment pier stud and assembling method thereof |
| CN111236423A (en) * | 2020-01-06 | 2020-06-05 | 三箭建设工程集团有限公司 | Semi-dry type connecting joint of frame beam and column and construction method thereof |
| CN113216510A (en) * | 2021-03-04 | 2021-08-06 | 北京工业大学 | Grouting sleeve connection assembly type concrete member with ECC pipe |
| CN113216510B (en) * | 2021-03-04 | 2022-10-28 | 北京工业大学 | Take grout muffjoint assembled concrete component of ECC pipe |
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