CN218714373U

CN218714373U - Vertical steel bar bolt type mechanical connection of precast concrete wall

Info

Publication number: CN218714373U
Application number: CN202222868432.7U
Authority: CN
Inventors: 张颖; 文元
Original assignee: Dalian Architectural Design & Research Institute Co ltd
Current assignee: Dalian Architectural Design & Research Institute Co ltd
Priority date: 2022-10-28
Filing date: 2022-10-28
Publication date: 2023-03-24
Anticipated expiration: 2032-10-28

Abstract

The utility model discloses vertical reinforcing bar bolt type mechanical connection of precast concrete wall relates to building material technical field, especially relates to a vertical reinforcing bar bolt type mechanical connection structure of precast concrete wall for housing construction. The utility model discloses the inside of precast concrete wall is provided with vertical distribution muscle and horizontal distribution muscle; the bottom end of the precast concrete wall body is provided with an embedded steel plate which penetrates through the length of the precast concrete wall body; bolt holes are uniformly distributed on the central line of the embedded steel plate; the upper part of the position of the precast concrete wall body corresponding to the bolt hole is provided with a preformed hole for screwing the nut and grouting material; the top ends of the transverse distribution ribs are arranged outside the top ends of the precast concrete walls, are connected through nuts after being inserted into bolt holes of pre-buried steel plates at the bottom ends of the upper layer of precast concrete walls, and are then filled with slurry, so that the upper and lower sections of precast concrete walls are mechanically connected through bolts.

Description

Vertical steel bar bolt type mechanical connection of precast concrete wall

Technical Field

The utility model discloses vertical reinforcing bar bolt type mechanical connection of precast concrete wall relates to building material technical field, especially relates to a vertical reinforcing bar bolt type mechanical connection structure of precast concrete wall for housing construction.

Background

With the vigorous popularization of industrialized buildings in China, the fabricated building is widely applied to various buildings such as industries, civilian buildings and the like, particularly a shear wall structure of a house type, and the shear wall structure has higher occupation ratio due to more outstanding advantages. As an important vertical stress component in the shear wall structure, the reliable connection of the vertical reinforcing steel bars of the assembled wall body is a problem which is relatively concerned by people.

At present, the assembly rate of residential assembly buildings in various places is required to be about 50 percent generally, and a certain proportion of the prefabricated assembly buildings serving as vertical component walls for shear wall structures is also required. The edge member part mainly stressed is cast-in-place concrete, and other parts of the wall body can be prefabricated. According to the relevant specifications of the prefabricated concrete structure released by the state at present, the connection mode of the vertical steel bars of the prefabricated shear wall on the upper layer and the lower layer is mainly sleeve grouting and slurry anchor lapping, and the current application of the two modes is mainly the sleeve grouting and slurry anchor lapping. The principle of sleeve grouting is that a steel sleeve is embedded in a prefabricated part, when an upper layer member and a lower layer member are installed in a contraposition mode, after a reserved steel bar of a lower layer is inserted into the embedded sleeve of the upper layer, grouting materials are injected into a gap between the sleeve and the steel bar in a pressure mode, the hardened grouting materials respectively generate a bonding effect with the steel bar and the grouting sleeve, the force in one steel bar is transmitted to the other steel bar, the continuous and reliable force transmission connection structure of the steel bar is achieved, and the vertical steel bar of the upper layer and the lower layer is anchored through the bonding force of the grouting materials. However, in the actual application process, the technology has certain disadvantages, and is mainly embodied in the aspects of complex grouting sleeve process flow, high construction difficulty and construction cost, high technical requirements of constructors and the like, so that on-site construction supervision work must be comprehensively made to ensure that the connection quality of the grouting sleeve, the quality of the grouting sleeve at a connection node, the production precision of a prefabricated part, the construction organization design, the construction quality and the like can reach corresponding standard standards. The construction quality of the sleeve secondary grouting is an important factor directly related to the structure safety, and the construction of the grouting material is controlled by multiple factors, so that the uncertainty is multiple. For the above reasons, in order to reduce the number of longitudinal bar joints, the general practice specified by the current specifications is as follows: the double-row longitudinal bars with the original common spacing of 200mm are adjusted to be the 600mm spacing in staggered arrangement, the longitudinal bars which are not connected are arranged in the middle of the 600mm, the diameter of the longitudinal bars which are connected is increased to meet the requirement of the reinforcement ratio of the wall body, and the distributed bars which are not connected longitudinally do not participate in the calculation of the reinforcement ratio. The attach fitting quantity has reduced like this, but the wholeness of wall body can have and weakens by a wide margin, because the reinforcing bar interval of interval 600mm is great, the reinforcing bar quantity is less, and the pulling force between the joint reinforcement only leans on the frictional force transmission of grout, if grout quality existence problem or reinforcing bar and sleeve counterpoint precision lead to the grout not enough evenly, when the wall body was drawn, will have very big potential safety hazard.

Aiming at the problems in the prior art, the novel vertical reinforced bolt type mechanical connection of the precast concrete wall is researched and designed, so that the problem in the prior art is very necessary to be overcome.

Disclosure of Invention

According to the grout sleeve process flow that above-mentioned prior art provided comparatively complicated, the construction degree of difficulty and construction cost are higher, constructor technical requirement is higher, pre-buried sleeve precision difficulty up to standard among the prefabricated component, and the quality is wayward, and the multiple uncertainty of secondary grout technical problem such as potential safety hazard that bring, and provide a precast concrete wall vertical steel bar bolt type mechanical connection. The utility model discloses mainly adopt vertical distribution steel bar bolt mechanical connection mode, this method steel bar connection is direct more reliable, be convenient for construction and detection, does not have hidden engineering, workman field operation is simple, and the construction environment requirement is not high, and construction quality is convenient for control, and is simple and convenient high-efficient.

The utility model discloses a technical means as follows:

a main body of a vertical steel bar bolt type mechanical connection of a precast concrete wall is a precast concrete wall;

furthermore, vertical distribution ribs and transverse distribution ribs are arranged inside the precast concrete wall body;

furthermore, the bottom end of the precast concrete wall body is provided with an embedded steel plate penetrating the length of the precast concrete wall body;

further, bolt holes are uniformly distributed on the central line of the embedded steel plate;

furthermore, a preformed hole for screwing a nut and grouting material is arranged at the upper part of the position of the precast concrete wall body corresponding to the bolt hole;

further, the prepared hole is a through hole with the thickness of 100mmX100 mm.

Furthermore, the top ends of the transverse distribution ribs are arranged outside the top ends of the precast concrete walls, are connected through nuts after being inserted into bolt holes of pre-buried steel plates at the bottom ends of the upper precast concrete wall, and are then filled with slurry, so that the bolt mechanical connection of the upper precast concrete wall and the lower precast concrete wall is realized.

Further, the interval of vertical distribution muscle is 200mm, and its top processing has 150 mm's external screw thread.

Furthermore, two pre-buried steel plates are respectively arranged on two sides of the bottom end of the precast concrete wall body;

furthermore, the width of the embedded steel plate is 60mm, and the thickness of the embedded steel plate is more than or equal to 10mm.

Further, the distance between the bolt holes in the embedded steel plate is 200mm, and the embedded steel plate and the vertical distribution ribs are arranged in a staggered mode;

further, the embedded steel plate is welded and fixed with the bottom end of the vertical distribution rib.

Compared with the prior art, the utility model has the advantages of it is following:

1. the utility model provides a vertical steel bar bolt type mechanical connection of precast concrete wall, the simple structure, every longitudinal distribution reinforcing bar of wall body can all be connected, and it is unanimous basically with cast-in-place structure to indulge muscle interval and relevant structure requirement, and more grout muffjoint indulges muscle interval connection form, and the wall body atress is more reasonable even.

2. The utility model provides a vertical reinforcing bar bolt type mechanical connection of precast concrete wall connects reliably, and the reinforcing bar anchor adopts mechanical connection (bolted connection) form than grout sleeve safe and reliable more, and every reinforcing bar is the on-the-spot connection that can the naked eye check, because the potential safety hazard that technology complicacy, material management and control, multiple human factor brought when avoiding grout sleeve construction.

3. The utility model provides a vertical reinforcing bar bolt type mechanical connection of precast concrete wall, it is easy and simple to handle, the construction of mechanical anchor is adopted the spanner by general workman and can be operated, and is simple and easy, does not need to train separately to workman's technique, does not need additionally to master other machinery, avoids complicated construction process, artifical technical requirement greatly reduced to reduce cost.

4. The utility model provides a vertical reinforcing bar bolt type mechanical connection of precast concrete wall, the error is adjustable, and among the grout muffjoint mode, sleeve is more in a slice wall, if there is a sleeve deviation when prefabricating, then lead to corresponding the reinforcing bar can't take one's place and be difficult to remedy. If the sleeve and the reinforcing steel bar are eccentrically installed, the grouting material cannot fully wrap the reinforcing steel bar, and the influence force is transmitted. When the bolt is mechanically connected, the steel plate reserved steel bar perforation can be carried out according to the requirement of the reserved hole of the anchor bolt, a certain amount of fine adjustment can be carried out during site construction, and the installation difficulty caused by the insufficient precision of the prefabricated part can be solved.

5. The utility model provides a vertical reinforcing bar bolt type mechanical connection of precast concrete wall, the prefabrication is simplified, adopts the mechanical connection form, only needs two pre-buried steel sheets in the component bottom, and the welding of reinforcing bar and steel sheet is accomplished in the mill, and the quality is controllable. And a certain screw thread is reserved at the top of the steel bar, and the finished nut is screwed, so that each step is simple and easy to implement.

To sum up, use the technical scheme of the utility model grouting sleeve process flow among the prior art is comparatively complicated, the construction degree of difficulty and construction cost are higher, constructor technical requirement is higher, the pre-buried sleeve precision difficulty up to standard among the prefabricated component, the quality is wayward, and the potential safety hazard scheduling problem that the multiple uncertainty of secondary grout brought.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 isbase:Sub>A view A-A of FIG. 1;

fig. 3 is a view B-B of fig. 1.

In the figure: 1. the cast-in-place steel plate comprises a preformed hole 2, a nut 3, external threads 4, an embedded steel plate 5, a cast-in-place section 6, vertical distribution ribs 7 and transverse distribution ribs;

A. pouring a section B, setting a grout layer a, installing a reserved gap B, the thickness c of the precast slab and the thickness of a post-pouring superposed layer.

Detailed Description

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

To make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

Unless specifically stated otherwise, the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the orientation words such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom", etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and in the case of not making a contrary explanation, these orientation words do not indicate and imply that the device or element in question must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the scope of the present invention: the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

For ease of description, spatially relative terms such as "above … …", "above … …", "above … … upper surface", "above", etc. may be used herein to describe the spatial positional relationship of one device or feature to other devices or features as shown in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and if not stated otherwise, the terms have no special meaning, and therefore, the scope of the present invention should not be construed as being limited.

As shown in fig. 1-3, the utility model provides a vertical steel bolt type mechanical connection of a precast concrete wall, the main body of which is a precast concrete wall; a steel bar framework consisting of vertical distribution ribs 6 and transverse distribution ribs 7 is arranged inside the precast concrete wall body, the distance between the vertical distribution ribs 6 is 200mm, and the top end of the vertical distribution ribs is provided with 150mm external threads 3; the bottom end of the precast concrete wall body is provided with two embedded steel plates 4 with the width of 60mm and the thickness of more than or equal to 10mm, which are arranged in the direction of extension, the central line of the embedded steel plates 4 is uniformly provided with bolt holes with the interval of 200mm, and the positions of the bolt holes and the vertical distribution ribs 6 are distributed in a staggered mode at intervals; the bottom ends of the vertical distribution ribs 6 are fixedly connected with the embedded steel plate 4 in a welding mode; the distance between the transverse distribution ribs 7 at the bottommost layer and the embedded steel plates 4 is 50mm; a preformed hole 1 with the thickness of 100mmX100mm is arranged at the position of the bolt hole of the pre-buried steel plate 4 of the precast concrete wall;

as shown in fig. 1-3, during assembly, the vertical distribution ribs 6 left at the top end of the lower precast concrete wall are inserted into the bolt holes of the pre-buried steel plates 4 at the bottom end of the upper precast concrete wall, and are fixedly connected with each other through the gaskets and the nuts 2; leave certain cast-in-place section 5 between two precast concrete wall bodies from top to bottom, cast-in-place section 5 includes: pour section A section and sit thick liquid layer B section, sit the thick liquid layer and be artifical and smear cement mortar in upper portion precast concrete wall body bottom, pour the section and include: mounting a reserved gap a, the thickness b of a precast slab and the thickness c of a post-pouring superposed layer, smearing mortar with the thickness of 10mm on the top end surface of the lower precast concrete wall, overlapping the precast slab on the upper end of the lower precast concrete wall, placing a reinforcement cage framework on the upper part of the precast slab, and pouring; and finally, filling the preformed hole 1 and the installation through joint with grouting materials to finish the assembly work of the prefabricated wall.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims

1. The utility model provides a vertical reinforcing bar bolt type mechanical connection of precast concrete wall which characterized in that:

the main body of the vertical steel bar bolt type mechanical connection of the precast concrete wall is a precast concrete wall body;

the interior of the precast concrete wall body is provided with vertical distribution ribs (6) and transverse distribution ribs (7);

the bottom end of the precast concrete wall body is provided with an embedded steel plate (4) which penetrates through the length of the precast concrete wall body;

bolt holes are uniformly distributed in the center line of the embedded steel plate (4);

the upper part of the precast concrete wall body corresponding to the bolt hole is provided with a preformed hole (1) for screwing a nut and grouting material;

the top end of the transverse distribution rib (7) is arranged outside the top end of the precast concrete wall body, is connected with the bolt hole of the pre-buried steel plate (4) at the bottom end of the upper layer of the precast concrete wall body in an inserting mode through the nut (2), and then slurry is poured to realize the mechanical connection of the upper precast concrete wall body and the lower precast concrete wall body through the bolts.

2. The precast concrete wall vertical steel bolt type mechanical connection according to claim 1, characterized in that:

the distance between the vertical distribution ribs (6) is 200mm, and the top end of each vertical distribution rib is provided with an external thread (3) with the diameter of 150 mm.

3. The precast concrete wall vertical steel bolt type mechanical connection according to claim 1, characterized in that:

the two embedded steel plates (4) are respectively arranged on two sides of the bottom end of the precast concrete wall body;

the width of the embedded steel plate (4) is 60mm, and the thickness is more than or equal to 10mm.

4. The precast concrete wall vertical steel bolt type mechanical connection according to claim 1 or 2, characterized in that:

the distance between the bolt holes on the embedded steel plate (4) is 200mm, and the bolt holes and the vertical distribution ribs (6) are arranged in a staggered mode;

the embedded steel plates (4) are welded and fixed with the bottom ends of the vertical distribution ribs (6).

5. The precast concrete wall vertical steel bolt type mechanical connection according to claim 1 or 2, characterized in that:

the preformed hole (1) is a through hole with the thickness of 100mmX100 mm.