CN210562169U - Node connecting part and frame prestressed anchor cable supporting structure - Google Patents

Node connecting part and frame prestressed anchor cable supporting structure Download PDF

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Publication number
CN210562169U
CN210562169U CN201920917783.8U CN201920917783U CN210562169U CN 210562169 U CN210562169 U CN 210562169U CN 201920917783 U CN201920917783 U CN 201920917783U CN 210562169 U CN210562169 U CN 210562169U
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node connecting
precast
spliced
node
connecting part
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杨校辉
郭楠
张卫雄
翟向华
丁保艳
张文纶
张国华
邵东桥
王宁
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Lanzhou University of Technology
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Lanzhou University of Technology
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Abstract

The utility model relates to a node connecting part and frame prestressed anchorage cable supporting construction, this node connecting part include upper portion board (5), lower part board (6) and establish side board (7) between the two, and upper portion board and lower part board all have reinforcing bar hole (9) that supply to reserve main muscle (4) and pass in the direction that needs are connected and are treated the concatenation object, and central point puts vertical anchor rope hole (10) that supply prestressed anchorage cable (2) to pass. The object to be spliced comprises a precast beam (3) and a precast pile foundation (1), wherein the end part of the precast beam to be spliced is provided with a reserved main rib. The utility model discloses node adapting unit simple structure, convenient assembling is swift, not only saves labour and saves time, practices thrift the cost, has still effectively improved the engineering quality. Meanwhile, the supporting structure using the node connecting part realizes the prefabrication of the standard parts of the precast beam, the precast pile foundation and the node connecting part, simplifies the construction steps, is not influenced by weather, and greatly reduces the construction difficulty.

Description

Node connecting part and frame prestressed anchor cable supporting structure
Technical Field
The utility model relates to a building engineering technical field especially relates to a node connecting part and frame prestressed anchorage cable supporting construction.
Background
In recent years, the rapid development of fabricated buildings in China takes the green construction guide, the green construction evaluation standard of construction engineering and the green construction specification of construction engineering, which are issued by the ministry of residence and construction in 2007, 2010 and 2014, as marks, the development of building industrialization is an important target for upgrading and transforming the building industry, and the green construction and building assembly become the development direction of the building industry in China.
The foundation pit and side slope engineering is one of the important project sub-projects of the construction engineering project and is the key point for realizing the national green construction requirement, and the development of the green environment-friendly prefabricated supporting structure not only meets the overall requirement and target of building beautiful China, but also is the necessary way for accelerating the reform of the ecological civilization system.
The frame prestressed anchor cable is a flexible supporting system widely applied to railway, highway side slopes and foundation pit engineering, and the system is anchored in a rock mass stabilized in the side slope body through large-tonnage prestressed anchor cables and can resist deep deformation and damage of the side slope body, and meanwhile, a reinforced concrete frame attached to the slope surface can play a role of a frame hoop on the surface layer rock soil of the side slope body and can effectively limit deformation and damage of the surface layer rock soil, so that the stability of the side slope rock soil body is maintained. However, the construction method of the traditional frame anchor rod supporting structure is complicated, the components need to be cast in situ, and the construction quality cannot be guaranteed due to the fact that the slope needing to be supported is generally steep and the construction conditions are severe, so that the construction cost is high and the period is long.
At present, although an assembled frame prestressed anchor cable supporting structure appears in the engineering world, the prefabricated frame transverse beam and the prefabricated frame upright post are basically prefabricated, the joint connection is still constructed according to the traditional method, the efficiency is low, and the construction quality cannot be guaranteed.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a node connecting part and frame prestressed anchorage cable supporting construction are provided to traditional nodal connection problem has been solved, the efficiency of construction is improved, practices thrift the cost.
For solving the problem, a node connecting part, be applied to and treat the connection between the concatenation object among the assembled frame prestressed anchorage cable supporting construction, treat that the concatenation object has the reservation owner muscle at the tip that needs are connected, treat between the concatenation object including between two liang of precast beams and/or between precast beam and the precast pile foundation, this node connecting part includes upper portion board, lower part board and establish the side board between the two, the upper portion board with the lower part board is being connected in needs the direction of treating the concatenation object all has the confession reserve the reinforcing bar hole that the owner muscle passed, upper portion board, lower part board and side board three have the vertical anchor rope hole that supplies the prestressed anchorage cable to pass in all connection direction reverse extension lines intersection.
Preferably, the upper plate and the lower plate are in a cross shape, a T shape or an L shape according to the direction of connecting the objects to be spliced, and the reinforcing steel bar holes are formed at the ends of the protruding portions.
Preferably, the splicing device further comprises a reinforcing bolt which is arranged on the side panel and is consistent with the direction of the objects to be spliced needing to be connected.
Preferably, the reserved main bar is fixed by welding after passing through the bar hole.
Preferably, the end of the reserved main reinforcement has an external thread, and the reserved main reinforcement is screwed into the external thread through a nut after passing through the reinforcement hole and is clamped at the reinforcement hole to realize fixation.
Preferably, the upper plate, the lower plate and the side panels are all steel plates.
The utility model also provides an assembled frame prestressed anchorage cable supporting construction, including prefabricated pile foundation, precast beam and prestressed anchorage cable, prefabricated pile foundation with between the precast beam, two liang through above-mentioned arbitrary item between the precast beam node connecting part realize fixed connection, prestressed anchorage cable wears to locate vertical anchor rope hole on the node connecting part.
Compared with the prior art, the utility model has the following advantage:
the utility model discloses in, treat that the concatenation object (precast beam, prefabricated pile foundation) has the reservation owner muscle at the tip that needs are connected, node connecting part has in the direction that needs are connected and realizes fixed reinforcing bar hole with the cooperation of reservation owner muscle to it puts (all connection direction reverse extension line intersections) at the central point has the vertical anchor rope hole that supplies the prestressed anchorage cable to pass. The utility model discloses node adapting unit simple structure, convenient assembling is swift, has effectively solved traditional nodal connection problem, not only saves labour and time, practices thrift the cost, has still effectively improved the engineering quality, makes the engineering tend to high-efficient, high-quality and environmental protection. Meanwhile, the supporting structure using the node connecting part realizes the prefabrication of the standard parts of the precast beam, the precast pile foundation and the node connecting part, simplifies the construction steps, is not influenced by weather, and greatly reduces the construction difficulty.
Drawings
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
Fig. 1 is an elevation view of a supporting structure provided in an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a cross node a provided in the embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a T-node B according to an embodiment of the present invention.
Fig. 4 is a schematic structural diagram of an L-shaped node C according to an embodiment of the present invention.
Fig. 5 is a schematic connection diagram of the precast beam and the cross node a provided by the embodiment of the present invention.
Fig. 6 is a cross-sectional view of the precast beam and the cross node a provided by the embodiment of the present invention.
Fig. 7 is a scene diagram is applied in the construction of supporting construction that the embodiment of the utility model provides.
In the figure: the method comprises the following steps of 1-prefabricating a pile foundation, 2-prestressed anchor cables, 3-prefabricating beams, 4-reserving main reinforcements, 5-upper plates, 6-lower plates, 7-side plates, 8-reinforcing bolts, 9-reinforcement holes, 10-vertical anchor cable holes and 11-the ground.
Detailed Description
Referring to fig. 1 to 7, the embodiment of the present invention provides a node connection component, which mainly includes an upper plate 5, a lower plate 6 and a side plate 7 disposed therebetween, wherein the upper plate 5 and the lower plate 6 are all provided with a reinforcement hole 9 for passing through the reserved main reinforcement 4 in the direction of the object to be spliced, which needs to be connected, and the upper plate 5, the lower plate 6 and the side plate 7 three are provided with vertical anchor cable holes 10 for passing through the prestressed anchor cables 2 at the intersection of the reverse extension lines of all connection directions.
It can be understood that the objects to be spliced are provided with the reserved cage bars 4 used in cooperation with the bar holes 9 at the ends to be connected, and the lengths of the reserved cage bars 4 can be set by calculation according to different scales of projects. The reserved cage bars 4 may be fixed by welding after passing through the bar holes 9, or may be fixed by providing external threads on the ends of the reserved cage bars 4, screwing the external threads into the bar holes 9 after passing through the bar holes, and clamping the external threads at the bar holes 9.
In the actual manufacturing process, the upper plate 5, the lower plate 6 and the side plate 7 are all made of steel plates and are welded and connected; the precast beam 3 is a reinforced concrete member, and the precast pile foundation 1 is a reinforced concrete member.
The node connecting part is used for realizing the connection between objects to be spliced in the fabricated frame prestressed anchor cable supporting structure, the prefabricated pile foundations 1 are buried below the ground 11 at intervals, the pile tops are flush with the ground 11, the slope surface above the ground 11 is transversely and longitudinally spliced through the prefabricated beams 3 to form a square lattice frame whole, and the bottom of the frame and the prefabricated pile foundations 1 are fixedly connected.
It can be understood that, in this kind of assembled supporting structure, the object to be spliced includes prefabricated crossbeam 3, prefabricated pile foundation 1, and corresponding node that needs to connect is including between two liang of prefabricated girders 3, between prefabricated girder 3 and the prefabricated pile foundation 1, specifically, in two liang of prefabricated girders 3 relation of connection, node connecting part corresponds for cross, T style of calligraphy and L type respectively according to the frame inside, frame edge, the required direction of connection of frame corner, and correspondingly, upper portion board 5 all is cross form, T style of calligraphy and L style of calligraphy with lower plate 6 in the node connecting part, and the node connecting part of these three kinds of structures corresponds and is called cross node A, T type node B and L type node C. In the connection relation between the precast beam 3 and the precast pile foundation 1, a cross-shaped node A is used in the frame, and a T-shaped node B is used at the edge position.
For example, in fig. 1, a cross-shaped node a has four mutually perpendicular connection directions, and when the cross-shaped node a is arranged inside a frame structure, four precast beams 3 can be connected at the same time, and when the cross-shaped node a is arranged at the bottom of the frame structure, 3 precast beams 3 and one precast pile foundation 1 can be connected at the same time; the T-shaped node B has three mutually perpendicular connecting directions, and can be simultaneously connected with three precast beams 3 or two precast beams 3 and one precast pile foundation 1 when arranged at the edge of the frame structure; the L-shaped joint C has two mutually perpendicular connection directions which enable simultaneous connection of two precast beams 3 at the corners of the frame.
In the cross node A, T type node B and L type node C, the reinforcing bar holes 9 are provided at the ends of the protruding portions in the connecting direction on the upper plate 5 and the lower plate 6. Further, a plurality of reinforcing bolts 8 are arranged on the side panel 7 in the direction consistent with the connecting direction, and the reinforcing bolts 8 are connected with the side panel 7 through welding, so that the interaction between concrete and the connecting node is enhanced, and the loose connection between the concrete and the node after pouring is prevented. The number of the reinforcing bolts 8 and the reinforcing steel bar holes 9 can be set through the number and the intervals of the main bars reserved by the precast beams 3 and the precast pile foundations 1
Referring to fig. 1 to 7, the embodiment of the utility model provides an assembled frame prestressed anchorage cable supporting construction is still provided, including prefabricated pile foundation 1, precast beam 3 and prestressed anchorage cable 2, especially, between prefabricated pile foundation 1 and the precast beam 3, realize fixed connection through the node connecting part that above-mentioned content is disclosed between two liang of precast beams 3, prestressed anchorage cable 2 wears to locate the vertical anchor rope hole 10 on the node connecting part.
Further, in this kind of assembled frame construction, single precast beam 3 is sharp shape reinforced concrete component, cooperates the utility model discloses the use of peculiar node connecting component, the inside and edge, the turning of frame construction (except prefabricated pile foundation 1) can both be formed by same precast beam 3. That is, when prefabricating the precast girders 3, there is no need to perform special and additional prefabrication for the girders at the edges and corners, and complete uniform prefabrication of the precast girders 3 in the frame structure is achieved.
The corresponding construction method refers to the following steps:
s100, slope cleaning: before construction, according to the design gradient, the slope is repaired layer by layer from top to bottom, namely, a layer is excavated, a layer is protected, and the slope surface is cleaned up.
In practical applications, before executing step S100, the following steps are also included:
manufacturing a prefabricated part: firstly, determining materials required for manufacturing the precast beam 3 and the precast pile foundation 1 according to specific engineering requirements, wherein the materials comprise the size, the reinforcing bars and the concrete grade of the precast beam 3; after materials required by the precast beam 3 and the precast pile foundation 1 are determined, the precast beam 3 and the precast pile foundation 1 are manufactured; secondly, the materials needed for manufacturing the connecting nodes are determined according to the specific requirements of engineering, and the materials comprise the number of the connecting nodes, the geometric dimension of the needed steel plates and reinforcing steel bar holes. Then, assembling and welding the upper plate 5, the lower plate 6 and the lateral plates 7 to form a connecting node; finally, determining the number of the prestressed anchor cables 2;
transporting the prefabricated part: and (3) conveying the prefabricated precast beam 3, the prefabricated pile foundation 1, the connecting node and the prestressed anchor cable 2 to a construction site.
S101, mounting prefabricated parts: according to the requirements of engineering design, the anchor hole positions of the first row are positioned on the slope surface and marked, the precast beam 3 is installed by using the node connecting parts according to the marked anchor hole positions, and the positions of the vertical anchor cable holes 10 are consistent with the positions of the anchor holes marked on the slope surface.
Wherein, when the anchor hole position is positioned and marked, the position deviation of the anchor hole should not exceed +/-8 mm. When the first row of precast beams 3 are installed, the east end and the west end are respectively connected by an L-shaped node C, and the middle part is completely connected by a T-shaped node B; when the second row to the last row of precast beams 3 are installed, the east and west ends are connected by adopting T-shaped nodes B, and the middle part is connected by adopting cross-shaped nodes A. After the prefabricated parts are installed, concrete should be poured and sealed for each node connecting part, as shown in fig. 7.
S102, tensioning and locking a prestressed anchor cable: according to the position of the vertical anchor cable hole 10, a first row of anchor holes are drilled on the working slope surface, the prestressed anchor cable 2 penetrates through the vertical anchor cable hole 10 and is placed in the drilled hole, cement mortar is poured, when anchor cable slurry and concrete reach the design strength, tensioning is carried out, and a tensioning and locking process is determined through a field drawing test.
And after the design tensioning is finished, performing one-time compensation tensioning at proper time, and then locking.
S103, sealing anchors: and filling gaps of the anchor backing plate and the anchor head with cement paste, and finally sealing the anchor head with concrete.
Wherein, C30 concrete is used for sealing the anchor.
And S104, repeating the steps S100-S103 until the last row of precast beams 3 are installed, and then completing the connection between the lower ends of the last row of precast beams 3 and the precast pile foundation 1.
The technical scheme provided by the utility model is introduced in detail above. The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.

Claims (7)

1. A node connecting component is characterized in that the node connecting component is applied to the connection between objects to be spliced in an assembled frame prestressed anchor cable supporting structure, the objects to be spliced are provided with reserved main ribs (4) at the end parts needing to be connected, every two precast beams (3) and/or the precast pile foundations (1) are arranged between the objects to be spliced, the node connecting component comprises an upper plate (5), a lower plate (6) and a side plate (7) arranged between the upper plate and the lower plate, the upper plate (5) and the lower plate (6) are provided with a reinforcing steel bar hole (9) for the reserved main reinforcing steel bar (4) to pass through in the direction of needing to be connected with the objects to be spliced, the upper plate (5), the lower plate (6) and the side plate (7) are provided with vertical anchor cable holes (10) for the pre-stressed anchor cables (2) to pass through at the intersection of reverse extension lines of all the connection directions.
2. The node connecting member according to claim 1, wherein the upper plate (5) and the lower plate (6) are formed in a cross shape, a T shape or an L shape in a direction of connecting the objects to be spliced as required, and the reinforcement holes (9) are formed at the ends of the protruding portions.
3. A nodal connection member according to claim 1 or 2, characterised in that it further comprises stiffening bolts (8) provided on said side panels (7) in correspondence with the direction in which said objects to be spliced are to be connected.
4. The node connecting device according to claim 1, wherein the reserved cage bars (4) are fixed by welding after passing through the bar holes (9).
5. The node connecting device according to claim 1, wherein the end of the reserved cage bar (4) has an external thread, and the external thread is screwed into the external thread by a nut after passing through the bar hole (9) and is caught at the bar hole (9) to be fixed.
6. A nodal connection member, according to claim 1, characterized in that said upper plate (5), said lower plate (6) and said side panels (7) are all steel plates.
7. A frame prestressed anchorage cable supporting structure, including prefabricated pile foundation (1), precast beam (3) and prestressed anchorage cable (2), characterized in that, between prefabricated pile foundation (1) and precast beam (3), two liang of precast beam (3) realize fixed connection through the node connecting component of any one of claims 1 to 6, prestressed anchorage cable (2) wear to locate vertical anchor rope hole (10) on the node connecting component.
CN201920917783.8U 2019-06-18 2019-06-18 Node connecting part and frame prestressed anchor cable supporting structure Active CN210562169U (en)

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Application Number Priority Date Filing Date Title
CN201920917783.8U CN210562169U (en) 2019-06-18 2019-06-18 Node connecting part and frame prestressed anchor cable supporting structure

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Application Number Priority Date Filing Date Title
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110359452A (en) * 2019-06-18 2019-10-22 兰州理工大学 A kind of nodal-connection components, frame pre-stress cable bolting structure and construction method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110359452A (en) * 2019-06-18 2019-10-22 兰州理工大学 A kind of nodal-connection components, frame pre-stress cable bolting structure and construction method

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