CN108518067B

CN108518067B - Assembled wallboard grouting compensation device and construction method thereof

Info

Publication number: CN108518067B
Application number: CN201810260802.4A
Authority: CN
Inventors: 张皎; 张昊浩; 杨成智; 朱淼; 麻永刚
Original assignee: Beijing Boda Xinyuan Real Estate Development Co Ltd
Current assignee: Beijing Boda Xinyuan Real Estate Development Co Ltd
Priority date: 2018-03-27
Filing date: 2018-03-27
Publication date: 2020-03-27
Anticipated expiration: 2038-03-27
Also published as: CN108518067A

Abstract

The invention discloses an assembly type wallboard grouting compensation device and a construction method thereof, and relates to the technical field of building construction. The invention solves the problem that the connection strength is influenced by poor compactness of the joint due to the solidification shrinkage of cement paste in the conventional grouting compensation.

Description

Assembled wallboard grouting compensation device and construction method thereof

Technical Field

The invention relates to the technical field of building construction, in particular to an assembly type wallboard grouting compensation device and a construction method thereof.

Background

At present, the industrialization of residential engineering has been greatly developed, and the industrialized residential application of the assembled shear wall structure is the most extensive. The prefabricated shear wall structure of the industrialized house adopts a mode of synchronously carrying out component installation and cast-in-place operation, namely, the prefabricated wall plate and the cast-in-place wall body are synchronously constructed. The prefabricated wall panel guarantees the stress performance of reinforcing bar and wallboard through the connected mode of sleeve grout to form wholly through cast-in-place node and substructure. The prefabricated wall board is the most critical link through the vertical connection with the lower structure for steel bar sleeve grouting, and the quality of the connection between the prefabricated wall board and the lower structure directly influences the anti-seismic performance of the installed integral structure.

The chinese utility model with the bulletin authority number CN206753081U discloses a prefabricated wall panel installation structure, which comprises a first prefabricated wall panel located above, a second prefabricated wall panel located below, and a floor slab arranged between the first prefabricated wall panel and the second prefabricated wall panel; a plurality of pouring boxes and grouting pipes which penetrate through the pouring boxes and are used for grouting into the pouring boxes are pre-embedded at the bottom of the first prefabricated wallboard at intervals; the sleeve box comprises a box body, and the lower end of the box body is provided with an opening communicated with the bottom end face of the prefabricated wallboard; and the top reinforcing ribs of the floor slab and/or the top reinforcing ribs of the second prefabricated wall panel penetrate through the opening and extend into the box body.

The Chinese patent with the granted publication number of CN105544872B discloses an in-situ self-locking connecting structure for vertical steel bars of an assembled shear wall component, which comprises a self-locking inner core and a self-locking outer cylinder; one end of the self-locking inner core is connected with reinforcing steel bars distributed in an upper wall plate through threads, a self-locking bayonet lock capable of vertically sliding is arranged in a certain range at the upper end of the self-locking inner core, an outer wall convex rib is arranged on the outer wall of the self-locking inner core, and a circular ring convex rib is arranged at the upper end of the self-locking inner core; one end of the self-locking outer cylinder is connected with reinforcing steel bars distributed in the lower wallboard through threads, a vertical guide groove corresponding to the outer wall convex rib is arranged on the inner wall of the self-locking outer cylinder, and a side wall gap is also arranged on the inner wall of the self-locking outer cylinder; the self-locking outer barrel is characterized in that the self-locking bayonet lock and the side surface of the circular ring convex rib are provided with first scale marks, and the outer surface of the self-locking outer barrel is provided with second scale marks.

In the two structural designs, the connecting steel bars of the lower structure are inserted into the grouting sleeves at the bottom of the prefabricated wall board, a gap layer is usually reserved between the lower surface of the bottom of the prefabricated wall board and the upper surface of the lower structure, the gap layer is filled with grout while the sleeves of the prefabricated wall board are grouted, and the upper wall board and the lower wall board are connected and fixed after the grout is solidified. But all have the following disadvantages: due to the fact that the cement paste can shrink in the solidification process, the compactness of the cement paste inside the grouting sleeve is poor after the cement paste is solidified, and the expected connection strength is reduced.

Disclosure of Invention

In view of the defects in the prior art, the invention aims to provide an assembly type wallboard grouting compensation device, which can increase the compactness of the interior of a grouting sleeve and improve the connection strength by grouting.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides an assembled wallboard compensation arrangement that is in milk, is including the connecting pipe that has influent stream end and outflow end, the connecting pipe is located and is connected with inside hollow thick liquid pipe that stores up between influent stream end and the outflow end, stores up and is equipped with the valve that a control channel opened and close respectively between thick liquid pipe and influent stream pipe and the outflow end.

Through adopting above-mentioned technical scheme, after two wall post concatenations align about, the embedded steel bar of below wall post inserts the grout sleeve of top wall post in, with the end and the grout muffjoint of effluenting of connecting pipe, the inflow end and the outside grout source of connecting pipe are connected. Then opening two valves on the connecting pipe, and injecting cement slurry into the grouting sleeve through the connecting pipe until the cement slurry seeps out of the wall column; closing the valve at the outflow end and continuing grouting, storing grout in a grout storage pipe, gradually raising the liquid level in the grout storage pipe to be higher than the top end of the grouting sleeve, then closing the valve at the inflow end and reopening the valve at the outflow end, so that the grout storage pipe is communicated with the grouting sleeve, and when the grout in the grouting sleeve solidifies and shrinks, the grout in the grout storage pipe can be supplemented in time, so that the shrinkage is transferred to the grout storage pipe, and the grout in the grouting sleeve has high compactness and better connection strength after being solidified.

The invention is further configured to: the middle part of the connecting pipe is connected with a branch pipe, and a valve for controlling the opening and closing of the channel is arranged on the branch pipe.

Through adopting above-mentioned technical scheme, another grout sleeve can be connected to the branch pipe, can carry out the slip casting to two grout sleeves simultaneously during the slip casting like this to the back is closed to the valve of influent stream end, opens the valve on outflow end and the branch pipe, and the storage thick liquid pipe also can compensate two grout sleeves simultaneously, and the efficiency of construction is higher.

The invention is further configured to: the branch pipe can be dismantled and be connected with the sample subassembly, and the sample subassembly is equipped with into thick liquid mouth and grout outlet on the grout sleeve lateral wall including the last test block of butt joint, lower test block and the installation at the inside open grout sleeve in both ends of last test block, is fixed with the reinforcing bar that inserts grout sleeve one end in the last test block, is fixed with the reinforcing bar that inserts the grout sleeve other end in the lower test block.

Through adopting above-mentioned technical scheme, can carry out the slip casting to the grout sleeve in sample subassembly and the wall body simultaneously during the construction, the grout in the storage thick liquid pipe compensates two grout sleeves simultaneously, and the density of the grout sleeve in the sample subassembly is unanimous basically with the grout sleeve's in the wall body density like this, can dissect to detect the density and joint strength to the sample subassembly and replace traditional mode of taking a sample from the wall body, and it is more convenient to detect, can not destroy the wall body.

The invention is further configured to: the slurry storage pipe is internally provided with a piston, the piston slides axially along the slurry storage pipe and is sealed with the slurry storage pipe along the periphery, and the top end of the piston is fixed with a balancing weight.

Through adopting above-mentioned technical scheme, when grout pours into to storing up the thick liquid pipe, grout promotes piston and balancing weight and rises, and when needs compensation, the piston descends and produces pressure to the grout in the storage thick liquid pipe under the action of gravity of balancing weight, is favorable to grout to the grout sleeve motion to compensate.

The invention is further configured to: the inner diameter of the upper part of the pulp storage pipe is larger than that of the bottom outlet.

Through adopting above-mentioned technical scheme, store up the grout pipe and can save more grout, the grout is not enough when avoiding solidifying the shrink and leads to the condition emergence that can't play the compensation effect, improves the compensation effect.

The invention is further configured to: the inner wall of the grouting sleeve is provided with a plurality of bulges.

Through adopting above-mentioned technical scheme, when grout solidifies with grout sleeve connectivity better. In addition, the bulge can inhibit the phenomenon that grout sprays when injecting into grout sleeve for the grout liquid level slowly rises, reduces the bubble in the thick liquid, improves the solidification compactness.

In view of the defects in the prior art, another object of the present invention is to provide a construction method of an assembly type wall grouting compensation device, which can increase grouting compactness and facilitate later-stage connection strength detection.

In order to achieve the purpose, the invention provides the following technical scheme: a construction method of an assembly type wallboard grouting compensation device comprises the following steps:

s1: prefabricating a concrete wall column by using a template, wherein a plurality of steel bars are embedded and fixed at one end of the wall column, and the steel bars partially extend out of the end part of the wall column; a plurality of grouting sleeves are fixedly embedded in the other end of the wall column, a plurality of steel bars are embedded between the grouting sleeves and the wall column, one part of the steel bars is positioned in the wall column, and the other part of the steel bars is inserted into the grouting sleeves; the grout inlet and the grout outlet of the grouting sleeve are exposed;

s2: vertically butting the two wall columns to enable the grouting sleeve at the bottom end of the wall column above the steel bar of the lower wall column to be in a butt joint;

s3: installing the grouting compensation device of claim 4, placing the top end of the grout storage pipe upwards, connecting the outflow end of the connecting pipe with the grout inlet of the grouting sleeve, and connecting the inflow end of the connecting pipe with an external grout source;

s4: opening all the valves, and injecting cement paste into the grouting sleeves in the wall column and the sample assembly through the connecting pipes until the cement paste flows out from the grout outlet; and closing the valves on the outflow end and the branch pipe, stopping grouting after the grouting pipe is filled with the grout, closing the valve at the inflow end, and then reopening the valves on the outflow end and the branch pipe.

Through adopting above-mentioned technical scheme, wallboard joint strength is higher during the assembly, when needing to detect, only needs to dissect the grout sleeve of sample subassembly and intensity detects, and it is more convenient to detect the operation, can not destroy wall structure.

In summary, compared with the prior art, the invention has the following beneficial effects:

1. the cement paste in the cement paste storage pipe can compensate the grouting sleeve in the wall body, so that the solidification density of the cement paste in the wall body is improved, and the connection strength is improved;

2. the grouting conditions of the grouting sleeves in the sample assembly are consistent with those of the grouting sleeves in the wall body, and the grouting sleeves in the wall body can be detected, so that later detection is more convenient, and the structure of the wall body cannot be damaged;

3. the compensation device can also perform grouting on two grouting sleeves in the wall body at one time, so that the construction efficiency is improved.

Drawings

FIG. 1 is an isometric view of a grout compensation apparatus in a constructed condition;

FIG. 2 is an isometric view showing a grout compensation apparatus and a test sample assembly connection;

FIG. 3 is a top view showing the positional relationship of the components of the grout compensation apparatus;

fig. 4 is a sectional view showing a coupling structure of a grout storing pipe and a grout sleeve in the direction of a-a in fig. 3.

In the figure: 1. prefabricating a wallboard; 2. an upper wall column; 21. wall column bottom steel bars; 3. a lower wall column; 31. wall column top reinforcing steel bars; 4. a sample assembly; 41. loading a test block; 411. embedding ribs; 42. a test block is put down; 421. lower embedded ribs; 5. a grouting compensation device; 51. a flow inlet end; 511. a first valve; 512. a hose; 52. an outflow end; 521. a second valve; 53. a branch pipe; 531. a third valve; 54. a slurry storage pipe; 541. a liquid storage cavity; 542. a compensation port; 543. a piston; 544. a balancing weight; 6. grouting machine; 61. a hopper; 7. grouting a sleeve; 71. a pulp inlet; 72. and a pulp outlet.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

In which like parts are designated by like reference numerals. It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "bottom" and "top," "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.

Example (b): the utility model provides an assembled wallboard grout compensation arrangement, as shown in figure 1, it is fixed through wall support connnection between two prefabricated wallboard 1, the wall post includes assembled connection's last wall post 2 and lower wall post 3, it is fixed with a plurality of grout sleeve 7 to go up the inside pre-buried of one end that wall post 2 is close to lower wall post 3, the one end and the bottom of grout sleeve 7 of grout compensation arrangement 5 are connected, grout injection machine 6 is connected to the other one end of grout compensation arrangement 5, grout injection machine 6 pours into grout into the grout sleeve 7 of last wall post 2 bottom into for it is fixed after the grout solidifies with lower wall post 3 to go up wall post 2.

Referring to fig. 2, the grout sleeve 7 is provided with a grout inlet 71 and a grout outlet 72, the grout inlet 71 and the grout outlet 72 are exposed out of the outer wall of the upper wall stud 2, and the grout outlet 72 is positioned above the grout inlet 71.

The bottom end of the upper wall column 2 is embedded with wall column bottom steel bars 21, the top end of the lower wall column 3 is embedded with wall column top steel bars 31, and the positions of the wall column top steel bars 31 and the wall column bottom steel bars 21 are in one-to-one correspondence. The wall column bottom steel bars 21 and the wall column top steel bars 31 are respectively connected with the grouting sleeve 7.

Referring to fig. 1 and 2, a hopper 61 is provided on the grouting machine 6 for storing cement slurry, reducing the number of times of feeding, and facilitating the operation.

The grouting compensation device 5 comprises a connecting pipe with two open ends, one end of the connecting pipe is a flow inlet end 51, the other end of the connecting pipe is a flow outlet end 52, a branch pipe 53 is arranged in the middle of the connecting pipe, and a slurry storage pipe 54 perpendicular to the plane of the connecting pipe and the branch pipe 53 is arranged on the connecting pipe. The inlet end 51 is provided with a first valve 511, and the inlet end 51 is communicated with the hopper 61 of the grouting machine 6 through a hose 512. The outlet end 52 is provided with a second valve 521, and the outlet end 52 is communicated with the grout inlet 71 of the grouting sleeve 7. The branch pipe 53 is provided with a third valve 531.

During construction, the third valve 531 is closed, the first valve 511 and the second valve 521 are opened, the grouting machine 6 injects cement slurry into the grouting sleeve 7 through the connecting pipe, the grouting sleeve 7 is filled with the cement slurry, the wall column bottom steel bars 21 are connected with the wall column top steel bars 31, and the cement slurry flows out from the slurry outlet 72 after the grouting sleeve 7 is filled with the cement slurry. The second valve 521 is closed and grouting is continued, and cement slurry enters the slurry storage pipe 54. When the liquid level in the grout storage pipe 54 reaches the required level, the first valve 511 is closed and the second valve 521 is opened, and the grout storage pipe 54 is communicated with the grout inlet 71, so that the grout sleeve 7 is compensated.

Referring to fig. 3 and 4, the inside of storing up thick liquid pipe 54 is equipped with stock solution chamber 541, and the bottom of storing up thick liquid pipe 54 is equipped with the compensation mouth 542 with the connecting pipe intercommunication, and the internal diameter of stock solution chamber 541 is greater than the internal diameter of compensation mouth to store up thick liquid pipe 54 can hold more grout when the same height liquid level, avoid influencing the compensation effect because of the grout is not enough.

A piston 543 is arranged inside the slurry storage tube 54, the piston 543 slides up and down along the liquid storage chamber 541 and is sealed with the inner wall of the slurry storage tube 54 along the circumference, and a counterweight 544 is fixedly connected above the piston 543. When the compensation is performed, the piston 543 moves downward under the action of the gravity of the counterweight block 544, the piston 543 generates pressure on cement slurry in the liquid storage cavity 541, the capability of the cement slurry flowing to the grouting sleeve 7 is improved, and the compensation effect is improved.

Referring to fig. 2 and 3, in order to detect the solidification density and connection strength of the cement slurry inside the grouting sleeve 7 in the later period, the sample assembly 4 is connected to the end of the branch pipe 53. The sample assembly 4 comprises an upper test block 41 and a lower test block 42, wherein the upper test block 41 and the upper wall column 2 are made of the same material and can be prefabricated together, and the lower test block 42 and the lower wall column 3 are made of the same material and can be prefabricated together.

Referring to fig. 4, the grouting sleeve 7 is fixed in the upper block 41, the upper embedded rib 411 is fixed in the upper block 41, the lower embedded rib 421 is fixed in the lower block 42, and the upper embedded rib 411 and the lower embedded rib 421 are respectively inserted into the upper end and the lower end of the grouting sleeve 7.

Thus, when the grout sleeve 7 in the upper wall column 2 is grouted, the third valve 531 of the branch pipe 53 is simultaneously opened, and the grout is simultaneously injected into the grout sleeve 7 in the upper block 41. Since the grout storage pipe 54 communicates with the two grout sleeves 7 simultaneously when the second and

third valves

521 and 531 are opened simultaneously, it is possible to compensate for the two grout sleeves 7 simultaneously. Therefore, after the cement slurry in the two grouting sleeves 7 is solidified, the internal compactness is basically consistent. When the connection strength between the upper wall column 2 and the lower wall column 3 and the internal density of the grouting sleeve 7 need to be detected, the connection strength between the upper test block 41 and the lower test block 42 and the internal density of the grouting sleeve 7 can be detected and replaced without being damaged and taken out.

The construction method of the assembled wallboard grouting compensation device comprises the following steps:

the prefabricated wall plate 1, the upper wall column 2 and the lower wall column 3 are installed together according to the process requirements, the wall column top steel bars 31 on the lower wall column 3 are aligned with and inserted into the grouting sleeves 7 at the bottom of the upper wall column 2, and the joints between the upper wall column 2 and the lower wall column 3 are enclosed.

The outlet end 52 of the grout compensation device 5 is then connected to the grout sleeve 7 in the upper wall stud 2, the inlet end 51 is connected to the grout injector 6, and the branch pipe 53 is connected to the test sample assembly 4. The first valve 511, the second valve 521 and the third valve 531 are opened, the mixed grout is fed into the hopper 61 of the grouting machine 6, and the grout is injected into the grouting sleeve 7 of the upper wall column 2 and the sample assembly 4 through the grouting machine 6 until the grout overflows from the grout outlet 72.

The second valve 521 and the third valve 531 are closed, grouting is continued to enable the liquid level of grout in the grout storage pipe 54 to be higher than the top of the grouting sleeve 7, then the first valve 511 is closed to stop grouting, and meanwhile the second valve 521 and the third valve 531 are opened to enable the grout storage pipe 54 to be communicated with the two grouting sleeves 7, so that when the grout in the grouting sleeve 7 is solidified and shrunk, the grout in the grout storage pipe 54 can be supplemented in time, and the compactness is improved.

When the connection strength detection and the grouting sleeve 7 internal cement slurry solidification density detection are required, the sample assembly 4 is taken down from the grouting compensation device 5, and the performance detection is carried out according to the experiment requirement, so that the obtained test result can truly reflect the condition of the grouting sleeve 7 inside the upper wall column 2.

The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.

Claims

1. The utility model provides an assembled wallboard compensation arrangement that is in milk which characterized in that: the device comprises a connecting pipe with a flow inlet end (51) and a flow outlet end (52), wherein a pulp storage pipe (54) with a hollow interior is connected between the flow inlet end (51) and the flow outlet end (52) of the connecting pipe, and valves for controlling the opening and closing of a channel are respectively arranged between the pulp storage pipe (54) and the flow inlet end (51) and the flow outlet end (52);

the middle part of the connecting pipe is connected with a branch pipe (53), and a valve for controlling the opening and closing of the channel is arranged on the branch pipe (53);

branch pipe (53) can be dismantled and be connected with sample subassembly (4), sample subassembly (4) including the last test block (41) of butt joint, test block (42) down and install in the open grout sleeve (7) in the inside both ends of last test block (41), be equipped with into thick liquid mouth (71) and grout outlet (72) on grout sleeve (7) lateral wall, be fixed with the reinforcing bar that inserts grout sleeve (7) one end in going up test block (41), be fixed with the reinforcing bar that inserts the grout sleeve (7) other end in lower test block (42).

2. The assembly type wall panel grouting compensating device of claim 1, wherein: a piston (543) is arranged in the pulp storage pipe (54), the piston (543) slides axially along the pulp storage pipe (54) and is sealed with the pulp storage pipe (54) along the periphery, and a balancing weight (544) is fixed at the top end of the piston (543).

3. The assembly type wall panel grouting compensating device of claim 2, wherein: the inner diameter of the upper part of the pulp storage pipe (54) is larger than that of the bottom outlet.

4. The assembly type wall panel grouting compensating device of claim 1, wherein: the inner wall of the grouting sleeve (7) is provided with a plurality of bulges.

5. A construction method of an assembly type wallboard grouting compensation device is characterized by comprising the following steps: the method comprises the following steps:

s1: prefabricating a concrete wall column by using a template, wherein a plurality of steel bars are embedded and fixed at one end of the wall column, and the steel bars partially extend out of the end part of the wall column; a plurality of grouting sleeves (7) are fixed at the other end of the wall column in an embedded mode, a plurality of steel bars are embedded between the grouting sleeves (7) and the wall column, one part of the steel bars is located in the wall column, and the other part of the steel bars is inserted into the grouting sleeves (7); a grout inlet (71) and a grout outlet (72) of the grouting sleeve (7) are exposed;

s2: vertically butting the two wall columns to enable the grouting sleeve (7) at the bottom end of the wall column above the steel bars of the lower wall column to be in a butt joint;

s3: installing the grout compensation device (5) of claim 1, placing the top end of the grout storing pipe (54) upwards, connecting the outflow end (52) of the connecting pipe with the grout inlet (71) of the grout sleeve (7), and connecting the inflow end (51) of the connecting pipe with an external grout source;

s4: all the valves are opened, cement paste is respectively injected into the grouting sleeve (7) in the wall column and the sample assembly (4) through the connecting pipes until the cement paste flows out from the grout outlet (72); and closing the valves on the outflow end (52) and the branch pipe (53), stopping grouting after the grout storage pipe (54) is filled with the grout, closing the valve at the inflow end (51), and then opening the valves on the outflow end (52) and the branch pipe (53) again.