CN210857527U - Wall-beam connecting structure for prefabricated building - Google Patents

Wall-beam connecting structure for prefabricated building Download PDF

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CN210857527U
CN210857527U CN201921510209.7U CN201921510209U CN210857527U CN 210857527 U CN210857527 U CN 210857527U CN 201921510209 U CN201921510209 U CN 201921510209U CN 210857527 U CN210857527 U CN 210857527U
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wall body
shear
shear wall
concrete
precast beam
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廖志伟
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廖志伟
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Abstract

A wall-beam connecting structure for an assembly type building relates to the technical field of building structures and comprises an upper shear wall body, a lower shear wall body and a precast beam, wherein the lower shear wall body and the upper shear wall body are provided with shear keys and shear grooves which are matched with each other; one end of the supporting seat extends out of the end of the precast beam and is arranged on the shoulder, the side plates of the shear keys are inserted into the positioning grooves and tightly abut against the side walls of the positioning grooves, reinforcing steel bars are arranged on the precast beam and concrete is cast in place, the concrete is further poured into the gaps between the two side plates of the shear keys and the positioning grooves and fills the residual gaps between the upper shear wall body and the lower shear wall body, and then the lower shear wall body, the upper shear wall body, the precast prestressed bottom plate and the precast beam are connected into a whole. The wall-beam connecting structure has the advantages of convenience in construction and good connecting stability.

Description

Wall-beam connecting structure for prefabricated building
Technical Field
The utility model relates to a building structure technical field, in particular to a wall-roof beam connection structure for assembly type structure.
Background
The design difficulty of the fabricated building is mainly in the connection structure, and the connection structure has a key influence on the convenience of assembly construction and the connection stability.
Chinese patent document "CN 103883034A" discloses an assembled shear wall and wall beam connection structure with edge constraint members, wherein four corners of the wall body are rectangular unfilled corners, rectangular steel pipes are respectively arranged on the rectangular unfilled corners, a middle through hole of the rectangular steel pipe is longitudinally arranged, and 1 hidden column is respectively arranged between an upper rectangular steel pipe and a lower rectangular steel pipe on both sides of the wall body; each hidden column is communicated with an upper hollow rectangular steel pipe and a lower hollow rectangular steel pipe which are positioned on one corresponding side; a feed inlet is reserved at the lower position of the hidden columns at the two sides of the wall body; a rib inserting hole is reserved in the beam and a grouting sleeve is arranged, a steel bar extending out of the bottom end of the upper shear wall is inserted into the grouting sleeve through the rib inserting hole, a steel bar extending out of the top end of the lower shear wall is also inserted into the grouting sleeve through the rib inserting hole, pressure grouting is carried out on the grouting sleeve, and the upper shear wall, the beam and the lower shear wall are connected; and then pouring concrete into the feeding hole, wherein the concrete firstly enters the rectangular steel pipe at the lower part of the upper shear wall through the feeding hole, then passes through the post-poured concrete pouring hole on the beam and then enters the rectangular steel pipe at the upper part of the lower shear wall, so that the reserved hole part of the whole upper shear wall-beam-lower shear wall structure is penetrated. In the scheme, the upper shear wall and the lower shear wall are connected wall-wall and wall-beam by taking the beam as an intermediary, the extended steel bars are required to be aligned with the dowel holes one by one during actual construction, alignment time is long, once the extended steel bars are caused to be inclined due to collision in the transportation and hoisting processes of the wall body, the extended steel bars cannot be inserted into the dowel holes during assembly, in addition, after the steel bars are inserted into the grouting sleeves through the dowel holes, pressure grouting needs to be carried out one by one in each grouting sleeve, and construction is troublesome.
Chinese patent document 'CN 109736479A' discloses an assembled shear wall splicing structure and a vertical connecting method thereof, wherein two groups of upper positioning teeth are arranged on an upper wall plate, a group of lower positioning teeth are arranged on a lower wall plate, the upper positioning teeth and the lower positioning teeth are arranged in a staggered manner along a joint direction, a groove space which can just accommodate the lower positioning teeth to be embedded is formed between the two groups of upper positioning teeth, when the upper wall plate and the lower wall plate are spliced, the lower positioning teeth are embedded into grooves between the upper positioning teeth, so that the positioning between the upper wall plate and the lower wall plate can be realized, meanwhile, upper vertical hoop reinforcing steel bars arranged on the upper wall plate and lower vertical hoop reinforcing steel bars arranged on the lower wall plate are also in a staggered lap joint in the joint space, then, through reinforcing steel bars horizontally pass through reserved channels on the upper positioning teeth and the lower positioning teeth along the joint direction and are respectively fixedly tied with the upper vertical hoop reinforcing steel bars and the lower vertical hoop reinforcing steel bars on, and (3) forming a joint reinforcement cage structure, and finally, filling cast-in-place concrete into the reinforcement cage structure by a formwork, so that the upper wallboard and the lower wallboard are connected into a whole. The scheme only considers how the upper wall plate and the lower wall plate are connected, but does not consider the connection between the wall and the beam, and only from the disclosure content of the document, the shear wall adopting the connection structure has great technical difficulty in realizing the wall-beam connection.
SUMMERY OF THE UTILITY MODEL
One of the objectives of the present invention is to provide a wall-beam connection structure that can be used in prefabricated buildings and is convenient for construction.
In order to achieve the above purpose, the utility model adopts the following technical scheme: a wall-beam-plate connecting structure of an assembly type building comprises a prefabricated upper shear wall body, a lower shear wall body and a prefabricated beam, wherein extending steel bars are reserved at the top end of the lower shear wall body and the bottom end of the upper shear wall body, shear assemblies matched with each other are pre-embedded at the top end of the lower shear wall body and the bottom end of the upper shear wall body, and a shoulder is formed by unfilled corners at the top end of the lower shear wall body; YBZ king bars extend from the shoulder in the lower shear wall; YBZ main reinforcing steel bars also extend out of the position, opposite to the shoulder part, of the bottom end of the upper shear wall; the prefabricated beam is embedded with a supporting seat and extends out of the end head to form a U-shaped stirrup;
the shear assembly comprises a shear key and a shear groove; the shear key comprises a base plate embedded in a wall body and two side plates which are arranged at intervals and extend outwards from the wall body, the near ends of the side plates are fixedly connected to the front surface of the base plate, the far ends of the two side plates are opened to form open ends, and a distance adjusting part is arranged between the two side plates; the shear groove comprises a positioning groove capable of accommodating a side plate of the shear key, the depth of the positioning groove is smaller than the length of the side plate extending outwards from the wall body, and the size of a groove opening of the positioning groove is larger than that of an opening end of the shear key;
the supporting seat is fixedly connected with the precast beam, one end of the supporting seat extends out of the end head of the precast beam and is lapped on the shoulder part of the lower shear wall body, thereby providing support for the precast girders, the side plates of the shear keys are inserted into the location grooves with the open ends thereof abutting against the groove bottoms of the location grooves, the distance between the two side plates of the shear key is adjusted to be larger by the distance adjusting part so as to tightly abut against the side wall of the positioning groove, thereby fixing the upper shear wall body above the lower shear wall body and enabling the bottom end of the upper shear wall body and the top end of the lower shear wall body to be separated by a certain distance, the extension steel bars at the top end of the lower shear wall body are lapped with the extension steel bars at the bottom end of the upper shear wall body, YBZ main reinforcement steel bars extending from the upper shear wall body and the lower shear wall body penetrate through gaps between the U-shaped stirrups and the ends of the precast beams and are lapped at the upper part of the shoulder, and the U-shaped stirrups are sleeved outside the YBZ main reinforcement steel bars in a sleeving manner;
the precast beam is provided with reinforcing steel bars and cast-in-place concrete, the concrete is further poured into a gap between two side plates of the shear key and a positioning groove and fills a residual gap between the upper shear wall body and the lower shear wall body, the overlapped extending reinforcing steel bars, YBZ main reinforcing steel bars and the U-shaped stirrups are all wrapped by the concrete, the lower shear wall body, the upper shear wall body and the precast beam are connected into a whole by the concrete, and the precast beam and the concrete with the reinforcing steel bars above the precast beam form a superposed beam together.
The supporting seat comprises a horizontally arranged supporting plate, rib plates and anchor rods are fixedly arranged on the supporting plate, the rib plates extend to the front end from the rear end of the supporting plate, the number of the anchor rods is multiple, the plurality of the anchor rods are distributed at the front end and the rear end of the supporting plate at intervals, the rear end of the supporting plate is embedded in a precast beam, the front end of the supporting plate is erected on the shoulder of a lower shear wall and covered by cast-in-place concrete, the rear end of each rib plate is embedded in the precast beam, the front end of each rib plate is wrapped by the cast-in-place concrete, the anchor rods positioned at the rear end of the supporting plate are anchored in the precast beam, and the anchor rods positioned at the front end of the supporting plate are anchored in the cast-in-place concrete.
The distance adjusting part comprises two screws and a joint nut, the screws are horizontally arranged in opposite directions, the roots of the screws are fixedly connected with the inner side wall of the side plate, the rotating directions of the threads on the two screws are opposite, and the rotating directions of the threads at the two ends of the joint nut are opposite and are respectively connected with one screw through threads.
Furthermore, the rib plates are provided with through holes communicated with the two sides of the rib plates, and the through holes are filled with cast-in-place concrete.
Furthermore, a concrete pouring through hole is formed in a part, extending out from the wall body, of the side plate of the shear key, the highest point of the concrete pouring through hole in the vertical direction is higher than the upper edge of the notch of the positioning groove, a connection point of the screw rod and the side plate is located below the concrete pouring through hole, and the concrete pouring through hole is filled with cast-in-place concrete.
Furthermore, the shear key still includes many anchor bars of anchor in the wall body, the back of base plate is connected at the root of anchor bar, the quantity of subassembly that shears is the multiunit, the shear key wholly adopts steel to make and its curb plate is parallel with the wall, the groove that shears adopts steel to make and wholly buries underground in the concrete of wall body, the tank bottom back of groove that shears also is connected with many anchor bars.
The overlapping length S of YBZ main reinforcing steel bars extending out of the upper shear wall body and the lower shear wall body is not less than 35d, wherein d is the diameter of YBZ main reinforcing steel bars.
Furthermore, a negative rib extending along the horizontal direction is arranged above the precast beam, extends into a gap between the bottom end of the upper shear wall and the top end of the lower shear wall, and is welded with the extending steel bar and the YBZ main steel bar.
The construction process of the wall-beam connecting structure for the prefabricated building comprises the following steps: after the lower shear wall body is fixed in place, the following steps are carried out;
s01, hoisting the precast beam: hoisting the precast beam to the upper part of the lower shear wall horizontally, gradually descending the precast beam to enable the U-shaped stirrups extending out of the end heads of the precast beam to be sleeved to the outer sides of YBZ main reinforcement reinforcements extending out of the shoulder parts downwards, and putting the supporting seats on the shoulder parts of the lower shear wall to support the precast beam;
s02, hoisting the upper shear wall: the upper shear wall body is vertically lifted to the upper side of the lower shear wall body, the position of the upper shear wall body is adjusted to enable the shear keys to be aligned with the positioning grooves and gradually descend, the lifting force of a sling on the upper shear wall body is kept, the shear keys gradually fall into the positioning grooves, YBZ main reinforcement steel bars extending out of the bottom end of the upper shear wall body penetrate through gaps between the U-shaped stirrups and the ends of the precast beams, after the shear keys completely fall into the positioning grooves, the distance adjusting part is adjusted to expand the width of the distance between the two side plates of the shear keys to enable the side plates to tightly abut against the side walls of the positioning grooves, then the lifting force of the sling on the upper shear wall body is removed, and the upper shear wall body is fixed above the lower shear wall body by means of the constraint force of the shear grooves;
s04, steel bar lapping: overlapping the extended steel bars at the top end of the lower shear wall body with the extended steel bars at the bottom end of the upper shear wall body, and overlapping YBZ main steel bars extending from the shoulder part of the lower shear wall body with YBZ main steel bars extending from the bottom end of the upper shear wall body above the shoulder part;
s05, reinforcing bars and pouring concrete: and reinforcing bars are arranged on the precast beams, concrete is cast in situ to form the composite beam, a part of the concrete is poured and filled in a gap between the bottom end of the upper shear wall body and the top end of the lower shear wall body, a gap left on the shoulder part of the lower shear wall body, a gap between the shear key and the shear groove and a gap between the two side plates of the shear key in the pouring process, and the upper shear wall body, the lower shear wall body and the precast beams are connected into a whole by utilizing the cast-in-situ concrete.
In the wall-beam connection structure, the upper wall body and the lower wall body can be quickly aligned and preliminarily fixed through the shearing assembly, the operation of the shearing assembly in the aligning and inserting fixing aspects is simpler and quicker than the mode that reinforcing steel bars fix holes and sleeves in the prior art, and after the shearing assembly is aligned and fixed, other external devices are not needed to provide auxiliary supports to prevent the upper shearing wall body from shifting and inclining, so that the construction convenience and the working efficiency are improved. Additionally, because the utility model discloses to go up shear force wall body, lower shear force wall body and roof beam and become an organic whole through cast-in-place concrete "wet joint", the roof beam forms horizontal restraint to the connected node of last shear force wall body and lower shear force wall body, has improved the connection steadiness of going up shear force wall body and lower shear force wall body.
Drawings
FIG. 1 is a front elevation view of a vertical leg precast shear wall standard used in the examples;
FIG. 2 is a reinforcement schematic diagram of the vertical leg prefabricated shear wall standard component shown in FIG. 1;
FIG. 3 is a schematic view of a connection structure of two straight-leg prefabricated shear walls after assembly;
FIG. 4 is a schematic diagram of a splicing joint after two straight-limb prefabricated shear walls are assembled;
FIG. 5 is a schematic view of a connection structure of the vertical column precast shear wall and the precast beam;
FIG. 6 is a top view of the vertical leg precast shear wall standard shown in FIG. 1;
FIG. 7 is a side elevational view of the vertical leg precast shear wall standard shown in FIG. 1;
FIG. 8 is a schematic view of an internal connection structure of two straight-leg prefabricated shear walls after splicing through a shear assembly and pouring concrete;
FIG. 9 is a schematic front view of a shear key;
FIG. 10 is a schematic side view of a shear key;
FIG. 11 is a front view of the support base;
FIG. 12 is a schematic top view of the backup pad;
in the figure:
1-upper shear wall 2-lower shear wall 3-precast beam
4-extended steel bar 6-supporting seat 7-concrete
2 a-shoulder 3 a-U-shaped stirrup 3 b-negative bar
4 a-YBZ main reinforcement bar 5 a-shear key 5 b-shear groove
6 a-bearing plate 6 b-ribbed plate 6 c-anchor rod
5a1 base plate 5a2 side plate 5a3 spacing adjustment part
5a 4-anchor bar 5a2 a-concrete pouring through hole 5a3 a-screw rod
5a3 b-union nut.
Detailed Description
In the description of the present invention, it is to be understood that the terms "upper", "lower", "top", "bottom", "inner", "outer", "above", "below", and the like, refer to orientations or positional relationships illustrated in the drawings, and are used for simplicity and convenience of description, and do not indicate or imply that the referenced components must have a particular orientation, configuration, and operation.
In addition, in the present invention, unless otherwise explicitly specified or limited, the terms "connected," "fixed," and the like are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrally connected; the two components can be directly connected or indirectly connected through an intermediate medium, and the overlapping is understood to mean that the two components are overlapped with each other, and the two components overlapped with each other are not limited to be fixedly connected together through a connecting piece.
Compared with the prior art, the utility model discloses there are following apparent characteristics: 1. the upper shear wall body 1 and the lower shear wall body 2 are aligned and spliced more simply by adopting the connection mode of matching the shear keys 4a with the shear grooves 4b, and the upper shear wall body 1 is kept not to be inclined or toppled without adding an auxiliary supporting device after splicing. 2. The upper shear wall body 1, the lower shear wall body 2 and the beam are connected into a whole through cast-in-place concrete in a wet mode, the beam forms horizontal constraint on a connecting node of the upper shear wall body 1 and the lower shear wall body 2, and the stability of a connecting structure is improved.
The present invention will be further described with reference to the accompanying drawings.
Fig. 3-4 show a wall-wall coupling structure, and fig. 5 shows a wall-girder coupling structure, and it is apparent that the wall-girder coupling structure shown in fig. 5 can also be applied to the wall-wall coupling structure shown in fig. 3-4. In practical application, the upper shear wall body 1 and the lower shear wall body 2 can adopt the straight prefabricated shear wall standard part with the structure shown in fig. 1-2 and fig. 6-7, and meanwhile, the upper shear wall body 1, the lower shear wall body 2 and the prefabricated beam 3 can be prefabricated in a factory and then transported to a construction site through a flat trailer for assembly.
The structure of the prefabricated upper shear wall body 1 and the prefabricated lower shear wall body 2 is shown in figures 1-4 and 6-7, extending steel bars 4 are reserved at the top end of the lower shear wall body 2 and the bottom end of the upper shear wall body 1, shear assemblies matched with each other are pre-embedded at the top end of the lower shear wall body 2 and the bottom end of the upper shear wall body 1, and a shoulder 2a is formed by a top unfilled corner of the lower shear wall body 2; YBZ main reinforcing steel bars 4a extend from the shoulder part 2a in the lower shear wall body 2; in the upper shear wall 1, YBZ reinforcing bars 4a also extend from the bottom end thereof opposite the shoulder 2 a.
The shear assembly comprises shear keys 5a and shear grooves 5b shown in the figure; the specific structure of the shear key 5a is shown in fig. 9-10, and comprises a base plate 5a1 embedded in a wall body and two side plates 5a2 arranged at intervals and extending outwards from the wall body, wherein the proximal ends of the side plates 5a2 are fixedly connected to the front surface of the base plate 5a1 (i.e. the lower surface of the base plate 5a1 in the figure), the distal ends of the two side plates 5a2 are opened to form an open end, and a distance adjusting part 5a3 is arranged between the two side plates 5a 2; correspondingly, the shear groove 5b comprises a positioning groove which can accommodate the side plate 5a2 of the shear key 5a, the depth of the positioning groove is smaller than the length of the side plate 5a2 extending outwards from the wall body, and the size of the notch of the positioning groove is designed to be larger than the size of the opening end of the shear key 5a so as to facilitate the insertion of the side plate 5a 2. As for the distance adjusting part 5a3, it should be understood by those skilled in the art that there are many ways to increase the width of the distance between the two side plates 5a2 of the shear key 5a, for example, a wedge-shaped plug can be knocked in between the two side plates 5a2, the side plate 5a2 can be pressed outwards by the plug to expand outwards to tightly abut against the side wall of the positioning slot, and other suitable structures can be selected, which are not listed here. Of course, the structure shown in fig. 9-10 may also be adopted, specifically, in fig. 9-10, the distance adjusting member 5a3 includes two screws 5a3a arranged horizontally and oppositely and a joint nut 5a3b, the root of the screw 5a3a is fixedly connected with the inner side wall of the side plate 5a2, the screw directions of the two screws 5a3a are opposite, the screw directions of the two ends of the joint nut 5a3b are opposite and are respectively connected with the screw 5a3a through screw threads, the width of the distance between the two side plates 5a2 can be adjusted by rotating the joint nut 5a3b with a wrench, and the wrench can extend into the gap between the two side plates 5a2 to screw the joint nut 5a3 b.
The structure of the precast beam 3 is shown in fig. 5, in which a bearing block 6 is embedded in the precast beam 3 and a U-shaped stirrup 3a is extended from the end. The supporting seat 6 is fixedly connected with the precast beam 3, and one end of the supporting seat extends out of the end head of the precast beam 3. It will be appreciated by those skilled in the art that the function of the bearing blocks 6 is primarily to provide support to the precast beams 3, and that there are many applicable configurations, not to mention here. Fig. 11 to 12 show a structure of a supporting seat 6, which includes a horizontally disposed supporting plate 6a, a plurality of rib plates 6b and anchor rods 6c are fixedly disposed on the supporting plate 6a, the rib plates 6b extend from the rear end to the front end of the supporting plate 6a, the number of the anchor rods 6c is multiple and are distributed at the front end and the rear end of the supporting plate 6a at intervals, the rear end of the supporting plate 6a is embedded in the precast beam 3, the rear end of the rib plates 6b is embedded in the precast beam 3, and the anchor rods 6c located at the rear end of the supporting plate 6a are anchored in the precast beam 3.
During field assembly, the lower shear wall body 2 is fixed in place, and then the following steps are carried out:
s01, hoisting the precast beam 3: the precast beam 3 is horizontally lifted to the upper part of the lower shear wall body 2, the precast beam 3 is gradually lowered, the U-shaped stirrups 4a extending from the ends of the precast beam are sleeved on the outer sides of YBZ main reinforcement steel bars 5a extending from the shoulder parts 2a downwards, and the supporting seat 7 is lapped on the shoulder parts 2a of the lower shear wall body 2 (shown in figure 5) to support the precast beam 3.
S02, hoisting the upper shear wall 1: the upper shear wall body 1 is vertically lifted to the upper part of the lower shear wall body 2, the position of the upper shear wall body 1 is adjusted to lead the shear key 6a to be aligned with the positioning groove and gradually descend, the lifting force of the sling to the upper shear wall body 1 is kept, so that the shear key 6a gradually falls into the positioning groove and YBZ main reinforcement bars 5a extending from the bottom end of the upper shear wall 1 pass through the gap between the U-shaped stirrups 4a and the end of the precast beam 3, after the shear key 6a completely falls into the positioning groove, the distance adjusting part 6a3 is adjusted to enlarge the distance width between the two side plates 6a2 of the shear key 6a, so that the side plates 6a2 tightly abut against the side wall of the positioning groove, then the lifting force of the sling on the upper shear wall body 1 is removed, the upper shear wall body 1 is fixed above the lower shear wall body 2 by means of the constraint force of the shear groove 6b on the shear key 6a, and at the moment, the bottom end of the upper shear wall body 1 is spaced from the top end of the lower shear wall body 2 by a certain distance.
S04, steel bar lapping: the extension reinforcing steel bars 4 at the top end of the lower shear wall body 2 are lapped with the extension reinforcing steel bars 4 at the bottom end of the upper shear wall body 1, and YBZ main reinforcing steel bars 4a extending from the shoulder part 2a of the lower shear wall body 2 and YBZ main reinforcing steel bars 4a extending from the bottom end of the upper shear wall body 1 are lapped together above the shoulder part 2 a. In order to better ensure the joint strength, the joint length S of the YBZ main reinforcing steel bars 4a extending from the upper shear wall 1 and the lower shear wall 2 is preferably not less than 35d, wherein d is the diameter of YBZ main reinforcing steel bars 5 a.
S05, reinforcing bars and pouring concrete: reinforcing bars are arranged on the precast beam 3, as shown in fig. 5, a negative bar 3b extending in the horizontal direction may be arranged above the precast beam 3, the negative bar 3b extends into a gap between the bottom end of the upper shear wall 1 and the top end of the lower shear wall 2 and is fixedly connected with the main reinforcing bars 4a of the extended reinforcing bars 4 and YBZ, so as to improve the beam-wall connection strength, after the reinforcing bars are arranged, concrete 7 is cast on the precast beam 3 in situ to form a composite beam, a part of the concrete 7 is poured and filled in the gap between the bottom end of the upper shear wall 1 and the top end of the lower shear wall 2, the remaining gap of the shoulder 2a of the lower shear wall 2, the gap between the shear key 5a and the shear groove 5b, and the gap between the two side plates 5a2 of the shear key 5a (see fig. 3-4 and 8), and the upper shear wall 1, the shear key 5a is cast-in-situ by using the concrete 7, The lower shear wall body 2 and the precast beam 3 are connected into a whole.
After the concrete 7 is solidified, the front end of the bearing plate 6a is lapped on the shoulder 2a of the lower shear wall 2 and is covered by the cast-in-place concrete 7, the front end of the rib plate 6b is also covered by the cast-in-place concrete 7, the anchor rod 6c positioned at the front end of the bearing plate 6a is anchored in the cast-in-place concrete 7, the lapped extending reinforcing steel bars 4, YBZ main reinforcing steel bars 4a and the U-shaped stirrups 3a are also covered by the concrete 7, and the precast beam 3 and the concrete 7 with the reinforcing steel bars above the precast beam form a superposed beam together.
In consideration of improving the connection stability between the supporting seat 6 and the cast-in-place concrete 7, in fig. 11 and 12, through holes are formed in the rib plates 6b to communicate with both sides thereof, so that after the concrete 7 is poured, the through holes are filled with the cast-in-place concrete 7, and the connection strength between the supporting seat 6 and the cast-in-place concrete 7 in the vertical direction is higher. Similarly, as shown in fig. 9-10, a concrete pouring through hole 5a2a may be formed in a portion of the side plate 5a2 of the shear key 5a that extends outward from the wall, and it should be noted that, after the shear key 5a is inserted into the shear groove 5b, the highest point of the concrete pouring through hole 5a2a in the vertical direction should be located above the notch of the groove, and the connection point of the screw 5a3a and the side plate 5a2 should be located below the concrete pouring through hole 5a2a, so that after the concrete 7 is poured, the concrete pouring through hole 5a2a is filled with the cast-in-place concrete 7, and the connection strength between the shear key 5a and the cast-in-place concrete 7 in the vertical direction is higher. In addition, the shear key 5a may further include a plurality of anchor bars 5a4, the anchor bars 5a4 are anchored in the wall in advance when the wall is prefabricated, the roots of the anchor bars 5a4 are connected to the back surface of the base plate 5a1, and a plurality of sets of shear modules may be provided according to the width of the wall, preferably, the shear key 5a is integrally made of steel material and the side plates 5a2 thereof are parallel to the wall surface, the shear groove 5b is made of steel material and is integrally embedded in the concrete of the wall, similarly, a plurality of anchor bars 5a4 may be provided on the back surface of the groove bottom of the shear groove 5b, and of course, the anchor bars 5a4 provided on the back surface of the groove bottom of the shear groove 5b may also be anchored in the wall in advance when the wall is prefabricated.
When the structure involved in the embodiment is in assembly construction, the operation of the shearing assembly in the aspects of alignment and insertion fixation is simpler and quicker than the mode that reinforcing steel bars in the prior art fix holes and sleeves, and after the shearing assembly is aligned and fixed, the auxiliary support is not needed to be provided by other external devices to prevent the upper shearing wall body 1 from shifting and inclining, so that the convenience and the working efficiency of construction are improved. In addition, after assembly, the upper shear wall body 1, the lower shear wall body 2 and the beam are in 'wet connection' into a whole through the cast-in-place concrete 7, and the beam forms horizontal constraint on a connection node of the upper shear wall body 1 and the lower shear wall body 2, so that the structural stability of the whole assembly type building can be better ensured.
The above-mentioned embodiment is the utility model discloses the implementation scheme of preferred, in addition, the utility model discloses can also realize by other modes, any obvious replacement is all within the protection scope of the utility model under the prerequisite that does not deviate from this technical scheme design.
In order to make it easier for those skilled in the art to understand the improvement of the present invention over the prior art, some drawings and descriptions of the present invention have been simplified, and in order to clarify, some other elements have been omitted from this document, those skilled in the art should recognize that these omitted elements may also constitute the content of the present invention.

Claims (8)

1. A wall-roof beam connection structure for assembly type structure, including prefabricated last shear force wall body (1), lower shear force wall body (2) and precast beam (3) lower shear force wall body (2) top and last shear force wall body (1) bottom leave and stretch out reinforcing bar (4), its characterized in that: shear assemblies matched with each other are pre-embedded at the top end of the lower shear wall body (2) and the bottom end of the upper shear wall body (1), and a shoulder (2a) is formed by a unfilled corner at the top end of the lower shear wall body (2); YBZ king reinforcement bars (4a) extend from the shoulder (2a) in the lower shear wall (2); YBZ main reinforcement bars (4a) also extend from the bottom end of the upper shear wall body (1) opposite to the shoulder part (2 a); the prefabricated beam (3) is embedded with a supporting seat (6) and extends out of the end head to form a U-shaped stirrup (3 a);
the shear assembly comprises a shear key (5a) and a shear groove (5 b); the shear key (5a) comprises a base plate (5a1) embedded in a wall body and two side plates (5a2) arranged at intervals and extending outwards from the wall body, the near ends of the side plates (5a2) are fixedly connected to the front face of the base plate (5a1), the far ends of the two side plates (5a2) are opened to form open ends, and a spacing adjusting part (5a3) is arranged between the two side plates (5a 2); the shear groove (5b) comprises a positioning groove which can accommodate a side plate (5a2) of the shear key (5a), the depth of the positioning groove is less than the length of the side plate (5a2) extending outwards from the wall body, and the size of the notch of the positioning groove is greater than that of the opening end of the shear key (5 a);
the supporting seat (6) is fixedly connected with the precast beam (3), one end of the supporting seat extends out of the end of the precast beam (3) and is lapped on the shoulder (2a) of the lower shear wall body (2) so as to provide support for the precast beam (3), the side plates (5a2) of the shear key (5a) are inserted into the positioning groove, the open end of the side plates abuts against the bottom of the positioning groove, the distance between the two side plates (5a2) of the shear key (5a) is enlarged through the distance adjusting part (5a3) to tightly abut against the side wall of the positioning groove, so that the upper shear wall body (1) is fixed above the lower shear wall body (2) and the bottom end of the upper shear wall body (1) is separated from the top end of the lower shear wall body (2) by a distance, and the extending reinforcing steel bars (4) at the top end of the lower shear wall body (2) are lapped with the extending reinforcing steel bars (4) at the bottom end of the upper, YBZ main reinforcement steel bars (4a) extending out of the upper shear wall body (1) and the lower shear wall body (2) penetrate through a gap between the U-shaped stirrups (3a) and the end of the precast beam (3) and are overlapped at the upper part of the shoulder (2a), and the U-shaped stirrups (3a) are annularly sleeved on the outer sides of the YBZ main reinforcement steel bars (4 a);
the precast beam is characterized in that reinforcing steel bars are arranged on the precast beam (3) and concrete (7) is cast in place, the concrete (7) is poured into a gap between two side plates (5a2) of the shear key (5a) and a positioning groove and fills a residual gap between the upper shear wall body (1) and the lower shear wall body (2), the extension reinforcing steel bars (4), the YBZ main reinforcing steel bars (4a) and the U-shaped stirrups (3a) which are overlapped together are wrapped by the concrete (7), the concrete (7) connects the lower shear wall body (2), the upper shear wall body (1) and the precast beam (3) into a whole, and the precast beam (3) and the concrete (7) with the reinforcing steel bars above the precast beam form a superposed beam together.
2. The wall-beam connecting structure for prefabricated buildings according to claim 1, wherein: the supporting seat (6) comprises a horizontally arranged supporting plate (6a), a plurality of rib plates (6b) and anchor rods (6c) are fixedly arranged on the supporting plate (6a), the rib plates (6b) extend from the rear end to the front end of the supporting plate (6a), the number of the anchor rods (6c) is multiple, the plurality of the anchor rods are distributed at the front end and the rear end of the supporting plate (6a) at intervals, the rear end of the supporting plate (6a) is embedded in the precast beam (3), the front end of the supporting plate (6a) is erected on the shoulder (2a) of the lower shear wall body (2) and covered by cast-in-place concrete (7), the rear end of each rib plate (6b) is embedded in the precast beam (3), the front end of each rib plate (6b) is wrapped by the cast-in-place concrete (7), and the anchor rods (6c) positioned at the rear end of the supporting plate (6a) are anchored in the precast beam (3), an anchor rod (6c) at the front end of the support plate (6a) is anchored in the cast-in-place concrete (7).
3. The wall-beam connecting structure for prefabricated buildings according to claim 1 or 2, wherein: the spacing adjusting component (5a3) comprises two screws (5a3a) and a joint nut (5a3b), wherein the screws (5a3a) are horizontally arranged in opposite directions, the root parts of the screws (5a3a) are fixedly connected with the inner side wall of the side plate (5a2), the screwing directions of the screws on the two screws (5a3a) are opposite, and the screwing directions of the two ends of the joint nut (5a3b) are opposite and are respectively in threaded connection with one screw (5a3 a).
4. The wall-beam connecting structure for prefabricated buildings according to claim 2, wherein: the rib plates (6b) are provided with through holes communicated with the two sides of the rib plates, and the through holes are filled with cast-in-place concrete (7).
5. A wall-beam connecting structure for prefabricated buildings according to claim 3, wherein: the shear key (5a) is characterized in that a concrete pouring through hole (5a2a) is formed in a part, extending outwards from a wall, of a side plate (5a2), of the shear key (5a), the highest point of the concrete pouring through hole (5a2a) in the vertical direction is higher than the upper edge of a notch of a positioning groove, a connection point of a screw rod (5a3a) and the side plate (5a2) is located below the concrete pouring through hole (5a2a), and the concrete pouring through hole (5a2a) is filled with cast-in-place concrete (7).
6. The wall-beam connecting structure for prefabricated buildings according to claim 1, wherein: shear key (5a) still include many anchor bars (5a4) of anchoring in the wall body, the back of base plate (5a1) is connected to the root of anchor bar (5a4), the quantity of assembly that shears is the multiunit, shear key (5a) wholly adopt steel to make and its curb plate (5a2) are parallel with the wall, shear groove (5b) adopt steel to make and wholly bury underground in the concrete of wall body, the tank bottom back of shear groove (5b) also is connected with many anchor bars (5a 4).
7. The wall-beam connecting structure for prefabricated buildings according to claim 1, wherein: the overlapping length S ≧ 35d of YBZ main rebar (4a) extending out of the upper shear wall (1) and the lower shear wall (2), wherein d is the diameter of YBZ main rebar (4 a).
8. The wall-beam connecting structure for prefabricated buildings according to claim 1, wherein: the novel shear wall is characterized in that a negative rib (3b) extending in the horizontal direction is arranged above the precast beam (3), and the negative rib (3b) extends into a gap between the bottom end of the upper shear wall (1) and the top end of the lower shear wall (2) and is welded with the extending steel bar (4) and the YBZ main reinforcement steel bar (4 a).
CN201921510209.7U 2019-09-11 2019-09-11 Wall-beam connecting structure for prefabricated building Active CN210857527U (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112458925A (en) * 2020-12-02 2021-03-09 中交路桥建设有限公司 Segment precast beam structure and construction method for splicing and combining bridge thereof
CN113944236A (en) * 2021-11-17 2022-01-18 中国建筑技术集团有限公司 Connecting structure of assembled light steel light concrete wall body-floor beam and construction method
CN113944236B (en) * 2021-11-17 2023-01-06 中国建筑技术集团有限公司 Connecting structure of assembled light steel light concrete wall body-floor beam and construction method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112458925A (en) * 2020-12-02 2021-03-09 中交路桥建设有限公司 Segment precast beam structure and construction method for splicing and combining bridge thereof
CN113944236A (en) * 2021-11-17 2022-01-18 中国建筑技术集团有限公司 Connecting structure of assembled light steel light concrete wall body-floor beam and construction method
CN113944236B (en) * 2021-11-17 2023-01-06 中国建筑技术集团有限公司 Connecting structure of assembled light steel light concrete wall body-floor beam and construction method

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