CN112627387A - Rib-free type side connection method for prefabricated external wall panel - Google Patents
Rib-free type side connection method for prefabricated external wall panel Download PDFInfo
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- CN112627387A CN112627387A CN202011588702.8A CN202011588702A CN112627387A CN 112627387 A CN112627387 A CN 112627387A CN 202011588702 A CN202011588702 A CN 202011588702A CN 112627387 A CN112627387 A CN 112627387A
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- 238000005192 partition Methods 0.000 claims description 8
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 4
- 238000004873 anchoring Methods 0.000 claims description 4
- 238000010276 construction Methods 0.000 abstract description 25
- 239000002002 slurry Substances 0.000 abstract description 16
- 230000008569 process Effects 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000009434 installation Methods 0.000 description 11
- 238000013461 design Methods 0.000 description 10
- 239000010410 layer Substances 0.000 description 8
- 238000006243 chemical reaction Methods 0.000 description 7
- 239000004570 mortar (masonry) Substances 0.000 description 6
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/38—Connections for building structures in general
- E04B1/41—Connecting devices specially adapted for embedding in concrete or masonry
- E04B1/4114—Elements with sockets
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/66—Sealings
- E04B1/68—Sealings of joints, e.g. expansion joints
- E04B1/6801—Fillings therefor
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/66—Sealings
- E04B1/68—Sealings of joints, e.g. expansion joints
- E04B1/6806—Waterstops
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/16—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups
- E04C5/162—Connectors or means for connecting parts for reinforcements
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Mechanical Engineering (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
The invention relates to a non-rib side connection method of a prefabricated external wall panel, belonging to the technical field of prefabricated external wall panel construction of an assembly type building. According to the method, the prefabricated external wall panel is free of ribs on the side edges through the embedded bolt sleeves, standardization and universalization of production of external wall panel components are facilitated, the problems that side forms are complex to install, slurry leaks from rib holes, the forms are clamped during demolding and the like are solved, the construction quality is guaranteed, the construction process is simplified, the construction efficiency is improved, and the construction cost is reduced.
Description
Technical Field
The invention relates to the technical field of prefabricated external wall panel construction of an assembly type building, in particular to a rib-free type lateral connection method for a prefabricated external wall panel.
Background
The prefabricated building (PC for short) is a concrete structure formed by assembling and connecting prefabricated components serving as main components. The prefabricated assembled concrete exterior wall cladding serves as an important component of a PC building, and due to the excellent industrial product quality, the prefabricated assembled concrete exterior wall cladding well solves the problems of water leakage, cracks and the like of the traditional building exterior wall, and is a preferred target for adopting prefabricated parts.
From the production, hoisting and construction perspectives, the traditional fabricated shear wall structure system has the following disadvantages: (1) the types of prefabricated components are various, and the processing technology is complex; (2) the vertical steel bar joints are more, the installation is difficult, and the joint quality is not easy to control; (3) the side surface of the prefabricated wall is provided with a plurality of external extending steel bars, and the prefabricated wall processing and on-site vertical joint steel bar binding efficiency is low; (4) the construction process is complex, and the advantages of good quality and high construction efficiency of the fabricated structure are difficult to exert.
Disclosure of Invention
In view of this, the invention aims to provide a non-rib type side connection method for a prefabricated external wall panel, so as to solve the technical problems that the prefabricated external wall panel in the prior art is low in assembly efficiency, complex in construction process and difficult in quality guarantee during installation.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
the method is characterized in that no steel bars are reserved on the upper side surface, the lower side surface, the left side surface and the right side surface of the prefabricated external wall panel, bolt sleeves and grouting sleeves are pre-embedded at set positions, vertical steel bars at horizontal seams between the prefabricated external wall panel and a floor slab are connected through the grouting sleeves, and after the prefabricated external wall panel is hoisted in place, connecting bolts are screwed in the corresponding bolt sleeves to be anchored into a cast-in-place structure, so that the anchoring of the prefabricated external wall panel and the cast-in-place structure is realized.
The beneficial effects of the above technical scheme are: according to the non-rib-output type side connection method for the prefabricated external wall panel, ribs are not output from the side edge of the prefabricated external wall panel through the embedded bolt sleeves, the side mold does not need to be provided with holes or notches to externally penetrate through reinforcing steel bars, the problems that side molds are complex to install, slurry leaks from rib output holes, mold clamping during demolding and the like are avoided, the universalization and standardization of the side molds are greatly improved, the machining efficiency is improved, and the machining cost of components is reduced; in addition, vertical steel bars at the horizontal joint between the upper prefabricated external wall panel and the beam are connected by single-row sleeve grouting, so that the steel bar spacing is large, the connection quantity is small, and the field grouting operation amount is greatly reduced; moreover, the bolt of plugging into of twisting later replaces the reservation reinforcing bar of conventional prefabricated side fascia side, has avoided the loaded down with trivial details problem of reinforcing bar installation, pours through cast-in-place structure and main part together, simplifies construction process, avoids later stage secondary construction, improves the efficiency of construction greatly, guarantees construction quality.
Furthermore, after the prefabricated external wall panel is hoisted in place, the prefabricated external wall panel is temporarily fixed through at least two inclined struts, one ends of the inclined struts are connected with reserved connecting pieces arranged on the prefabricated external wall panel through specific bolts, and the other ends of the inclined struts are anchored with ground embedded parts.
Has the advantages that: the prefabricated external wall panel is well fixed, and installation errors are reduced.
Further, the diagonal brace comprises a rod piece and threaded sleeves in threaded connection with two ends of the rod piece, the perpendicularity of the prefabricated external wall panel is adjusted by simultaneously rotating the threaded sleeves at two ends of the rod piece, and the exposed length of the part of the rod piece in threaded fit with the two threaded sleeves is not more than 3/5 of the total length of the part when the threaded sleeves are adjusted.
Has the advantages that: the adjustment is convenient and the degree of accuracy is higher, can not take place the phenomenon that member and threaded sleeve break away from in the adjustment process, has also guaranteed the fixed stability of prefabricated side fascia.
Further, the diameter of the grout sleeve is greater than at least twice the diameter of the vertical rebar.
Has the advantages that: the prefabricated external wall panel is favorable for error adjustment and vertical steel bar positioning during installation.
Furthermore, a groove is formed in the surface, connected with the cast-in-place structure, of the prefabricated external wall panel, a flexible material partition is filled in the groove, and the connection bolt penetrates through the flexible material partition to be connected with the embedded bolt sleeve.
Has the advantages that: achieving good waterproof effect.
Drawings
FIG. 1 is a diagram of a deepened design node of a prefabricated external wall in the non-rib-type side connection method of the prefabricated external wall panel of the present invention;
FIG. 2 is a schematic view showing the connection of longitudinal steel bars of a shear wall of a cast-in-place layer-to-precast layer in the non-bar-out type side connection method of the precast external wall panel of the present invention;
FIG. 3 is a detailed view of a support for the construction of a prefabricated external wall in the prefabricated external wall panel rib-free type lateral connection method of the present invention;
FIG. 4 is a schematic view of the horizontal connection between the prefabricated external wall and the main structure in the prefabricated external wall panel without rib-out type lateral connection method of the present invention;
FIG. 5 is a detailed view of the connection between the prefabricated external wall and the post-cast strip of the prefabricated external wall in the prefabricated external wall panel tendon-free type lateral connection method of the present invention.
Reference numerals: 1-floor slab, 2-prefabricated external wall panel, 3-grouting sleeve, 4-vertical steel bar, 5-rod piece, 6-threaded sleeve, 7-connecting piece, 8-flexible material partition, 9-constructional column, 10-grouting hole, 11-grout outlet, 12-connecting bolt, 13-steel bar skeleton, 14-cast-in-place wall, 15-connecting steel bar, 16-diagonal brace and 17-ground embedded part.
Detailed Description
The invention is described in further detail below with reference to the drawings and the detailed description.
The invention relates to a concrete embodiment of a rib-free type lateral connection method for a prefabricated external wall panel, which comprises the following steps:
as shown in fig. 1, 2, 3, 4 and 5, the method for connecting the prefabricated external wall panel without ribs of the invention comprises the following steps: step one, construction preparation; binding steel bars of prefabricated external wall panel components and installing embedded bolt sleeves; pouring and maintaining the prefabricated external wall panel component; fourthly, transporting the prefabricated external wall panel component; step five, hoisting the prefabricated external wall panel; step six, temporarily fixing the prefabricated external wall panel; seventhly, sealing the bin at the root of the outer wall connecting stub; eighthly, pouring concrete at the joint of the prefabricated external wall panel; and step nine, grouting and plugging the prefabricated external wall panel.
Specifically, in the construction preparation stage of the first step, the prefabricated external wall panel component needs to be deeply designed before being manufactured, and the content of the prefabricated external wall panel component comprises a plane and vertical arrangement drawing of the prefabricated external wall panel component, a template drawing of the prefabricated external wall panel component, a reinforcement drawing, a material and accessory specification; arranging and constructing detailed drawings of the embedded parts; in addition, the design calculation of the prefabricated external wall panel components is required, including the point location arrangement and the quantity calculation of the embedded bolt holes; and checking and calculating the bearing capacity and deformation in the processes of demolding, overturning, hoisting and the like. In this embodiment, the node diagram after the deepening design is as shown in fig. 1, the vertical steel bars 4 at the horizontal joint of the prefabricated external wall panel 2 and the floor slab 1 are connected by using a single row of grouting sleeves 3, the grouting sleeves 3 are embedded inside the prefabricated external wall panel 2, the grouting holes 10 are located below, and the grout outlet 11 is located above, and the non-shrinkage cement grouting material is used for grouting.
Step two, blanking and binding the external wall steel bars according to drawings, wherein the specification, the model, the position and the lap joint length of the steel bars meet the design requirements in the installation process; the embedded parts are embedded and constructed strictly according to design drawings, the models, specifications and quantity of the embedded parts are ensured to be completely accordant with the drawings, and the installation deviation of the embedded parts is ensured to be in a standard range. Wherein, a fixed bracket is manufactured at the corresponding position of the die for the embedded part, the preformed hole and the connecting bolt of the prefabricated external wall panel component; the fixed steel bars of the embedded parts are required to be straight, have no deformation and distortion, and the bolts must be screwed down during fixing to prevent displacement; before installation, the stone ballast is cleaned, a release agent is added, the accessories of the embedded part are screwed by screws during installation, and whether the position, the size and the like of the fixed accessories are accurate or not is checked.
And in the third step, the prefabricated external wall panel components which are bound are conveyed to a concrete pouring station by using a bench formwork, and the concrete is poured and vibrated at high frequency. And after the member is poured and finally set, maintaining the prefabricated member by adopting a water spraying natural maintenance mode, wherein the continuous maintenance time is not less than 7 days. The concrete strength of the prefabricated external wall panel component during demoulding and hoisting meets the design and specification requirements, when the concrete strength of the component reaches 30% of the design strength and is not lower than C15, the side forms can be dismantled, and the turnover strength of the component is not lower than 70% of the design strength and is not lower than C20. After the concrete of prefabricated external wall panel component reaches standard intensity, can lift by crane the prefabricated component, prevent to cause the destruction to prefabricated external wall panel component because of hoist and mount.
And in the fourth step, the prefabricated external wall panels are transported by adopting special transportation frames which are reliably fixed on a transport vehicle, two prefabricated external wall panel components are placed on each transportation frame, the tops of the two prefabricated external wall panels are fixedly connected in a pulling way, and the prefabricated external wall panels are reliably fixed with the transport vehicle by using a tensioning rope. During transportation, the outer surface of the prefabricated external wall panel component is protected, and during transportation, the vehicle starts slowly, the vehicle speed is uniform, and the speed is reduced during turning and lane changing so as to prevent the wall panel from overturning.
And in the fifth step, before the prefabricated outer wall is hoisted, constructing a conversion layer, namely pre-burying and connecting 16 steel bars in the lower cast-in-place wall 14 as shown in fig. 2, wherein the length of the connecting steel bars 15 is not less than 480mm, the length of the buried concrete is not less than 240mm, the height of the exposed cast concrete is 240mm, and the specific size can be determined according to the actual situation. The construction of the conversion layer should meet the following requirements: 1. the processing of the connecting steel bars 15 of the conversion layer is carried out according to the high precision requirement. In order to ensure that the prefabricated parts of the conversion layer can be smoothly placed in place, the connecting steel bars 15 of the conversion layer are accurate in positioning, fine in processing, free of bending and burr and long enough to meet design requirements. 2. When binding the steel reinforcement framework, the position of the steel reinforcement connected with the prefabricated part of the conversion layer is noticed. Preliminarily positioning the connecting steel bars according to a drawing and marking for determination; care should be taken to correct the perpendicularity of the connecting bars 15 during bar binding. 3. And after the steel bar binding is finished, checking and accepting the steel bar framework, and checking the grade, the diameter, the position and the throwing-out length of the connecting steel bar 15. 4. And erecting the wallboard template according to the requirement of a cast-in-place structure, and performing erection and binding operation on the floor template of the conversion layer. 5. And checking the position and the interval of the connecting steel bars and whether the whole steel bars have deviation or torsion by using a steel bar positioner. If the deviation or torsion does not meet the design requirements, the correction should be carried out in time. After the transfer floor is constructed, a proper lifting appliance is selected according to the form and weight of the component, and when the included angle between the wall plate and the steel wire rope is less than 45 degrees or four (generally even number) lifting nails or more than four lifting nails are arranged on the wall plate, a steel beam is adopted for lifting. In the hoisting process, a joint surface needs to be cleaned, and a prefabricated wall body positioning sideline and a 200mm control line are released on a constructed floor slab according to a positioning axis; when the height is 500mm from the installation position, the component is stopped to descend, after a lifting worker catches the cable rope by a hook, the component is pulled to the upper part of the installation position, and after the detection and confirmation are carried out, the component slowly descends. And inserting the steel bars reserved on the floor slab into the reserved holes of the wall board, and then dropping the PC wall board at the installation position.
In the sixth step, after the prefabricated external wall panels are hoisted in place, each prefabricated external wall panel needs two inclined struts 16 for fixing, as shown in fig. 3, a pre-embedded connecting piece 7 is arranged at the height position of the upper part 2/3 of each prefabricated external wall panel, each inclined strut 16 comprises a wrapping piece 5 and threaded sleeves 6 in threaded connection with two ends of a rod piece 5, one threaded sleeve 6 is connected with the connecting piece 7 reserved on the prefabricated external wall panel 2 through a specific bolt, and the other threaded sleeve 6 is anchored with a ground embedded part 17. The included angle between the inclined strut 16 and the horizontal floor is 40-50 degrees. In the installation process, an operator can remove the crane hook after ensuring that two (four) inclined struts of the wall plate are firmly installed; the adjustment of the perpendicularity is realized by adjusting the threaded sleeves 6 on the two inclined struts, the two sides are adjusted simultaneously, and all the prefabricated external wall panels 2 are installed in place rapidly according to the sequence. When the prefabricated external wall panel 2 is adjusted and fixed, the transverse joint is adjusted according to the elevation, and the vertical perpendicularity of the vertical joint is directly influenced by the uneven transverse joint; the width of the vertical seam can be controlled according to the end line of the wallboard; the mounting verticality of the prefabricated external wall panel is mainly satisfied by the vertical surface of the external wall panel; checking and adjusting the splicing seams of the prefabricated external wall panel mainly by vertical seams and secondarily by transverse seams; the flatness of the adjacent plates at the external corner position of the prefabricated external wall panel is checked and adjusted, and the external corner verticality is used as a reference for adjustment; checking the verticality of the wallboard by using an aluminum alloy hanging ruler, and adjusting by rotating an inclined strut until the verticality of the component meets the requirement; when the prefabricated external wall panel verticality is adjusted by the inclined strut, all components on the same component need to rotate towards the same direction to prevent the components from being twisted. If the support is not rotated, the brute force rotation is forbidden. When the leaking length of the part of the rod member 5 which is in threaded engagement with the threaded sleeves 6 is observed at any time during rotation, it is necessary to satisfy that the exposed length of the part of the rod member 5 which is in threaded engagement with the two threaded sleeves 6 when the threaded sleeves 6 are adjusted is not more than 3/5 (for example, the total length of the part of the rod member 5 which is in threaded engagement with the two threaded sleeves 6 is 500mm, and the screwing-out length is not more than 300 mm) of the total length of the part, so as to prevent the threaded sleeves 6 from being disengaged from the rod member 5.
And step seven, firstly plugging a special tool into a gap 20mm below the prefabricated external wall panel, placing mortar on a supporting plate, plugging mortar by using another special tool, wherein the width of a mortar belt in each bin is about 30-50mm, and performing bin sealing construction after bin separation is finished. And (3) extending a special cabin sealing tool into a gap of 20mm to serve as a baffle for smearing mortar for sealing the cabin, extending the special cabin sealing tool into the wall body to be controlled to be 5-10mm, ensuring that the thickness of a protective layer of the sleeve joint bar meets the standard requirement, and then performing cabin sealing construction by using the stirred mortar for setting the mortar.
Step eight, filling flexible material partitions 8 in the grooves of the prefabricated external wall panel 2, wherein the flexible material partitions 8 are made of foam boards with the thickness of 20mm, so that a good waterproof effect can be achieved, as shown in fig. 4 and 5, connecting bolts 12 penetrate through the flexible material partitions 8 and are connected with embedded bolt sleeves in the prefabricated external wall panel 2, meanwhile, the connecting bolts 12 are bound with a steel reinforcement framework 13 of a cast-in-place part constructional column 9, and a cast-in-place part wall column template is erected; concrete is poured into the main body cast-in-place part template and the constructional column, and a small vibrating rod is used for vibrating and compacting.
And step nine, manufacturing grouting material, using an electronic scale or a graduated measuring cup, and weighing and matching the material according to the water-material ratio required by a product factory inspection report. Pouring water into a stirring barrel, adding about 70% of materials, stirring uniformly for 1-2 minutes by using a special stirrer, adding all the rest materials, and stirring for 3-4 minutes until the materials are completely uniform. And after uniformly stirring, standing for about 2-3 minutes to naturally discharge bubbles in the slurry for reuse. Before formal grouting, checking whether sundries influencing slurry flow exist in grouting holes and slurry outlet holes of all joints one by one to ensure smooth hole paths; the environment temperature of grouting construction is not lower than 5 ℃, when the curing temperature of the connecting part is lower than 10 ℃, heating and heat preservation measures are adopted, and then a grouting pump (gun) is used for grouting from a grouting hole below the joint to the pressure in the sleeve. Particularly, the normal grouting slurry is completely grouted within 20-30 minutes after the water is added and stirred, so that certain operation emergency time is reserved as far as possible. During grouting, the same bin needs to be grouted only in one grouting hole, and more than two holes cannot be simultaneously selected for grouting; the same bin should be grouted continuously, so that the middle way is not stopped; if the grouting material is stopped halfway and grouted again, the grouting holes which are blocked need to be opened after the grouted slurry has enough fluidity, and the grouting holes are blocked one by one after the grouted slurry flows out again. When the joint is grouted, the special rubber plug is used for plugging in time after slurry flows out of the slurry discharge hole above the joint. When the grouting pump (gun) opening is withdrawn from the grouting hole, the grouting pump (gun) opening is also required to be immediately blocked. When the horizontal joint communicating cavity is used for grouting to a plurality of joints of the component at one time, grouting and discharging holes are sequentially plugged according to the discharging of slurry, and a grouting pump (gun) always keeps grouting pressure and fills lost slurry immediately if slurry leaks. And (4) inspecting the grouted joint by inspection before grouting is finished and slurry is solidified, and timely treating if slurry leaks. And after the grouting material is solidified, taking down the plugging rubber plug of the grouting hole, wherein the upper surface of the grouting material solidified in the inspection hole is higher than the lower edge of the grouting hole by more than 5 mm.
The invention relates to a non-rib-output type side connection method for a prefabricated external wall panel, which is characterized in that reinforcing steel bars are not reserved on the upper side surface, the lower side surface, the left side surface and the right side surface of the prefabricated external wall panel on the whole, but a bolt sleeve and a grouting sleeve are pre-embedded at set positions, vertical reinforcing steel bars at a horizontal joint between the prefabricated external wall panel and a floor slab are connected through the grouting sleeve, and after the prefabricated external wall panel is hoisted in place, a connecting bolt is screwed in the corresponding bolt sleeve, so that the connecting bolt is anchored in a cast-in-place structure, and the anchoring connection between the prefabricated external wall panel and the cast-.
Compared with the construction method of the similar prefabricated external wall assembly system, the non-rib-outlet type side connection method of the prefabricated external wall panel has the advantages that due to the fact that the embedded bolts are used for anchoring connection, side-edge reserved steel bars are omitted in component production, standardization and universalization of external wall panel component production are facilitated, and the problems that side dies are complex to install, rib outlet holes leak slurry, the dies are clamped during demolding and the like are solved; production efficiency is advanced relative to the rib-type prefabricated part, and the peripheral retaining wall constructional column is poured together with the main part, so that the construction process is simplified, secondary construction in the later period is avoided, the construction quality is guaranteed, and the cost is saved.
The above-described embodiments of the present invention do not limit the scope of the present invention. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.
Claims (5)
1. The method is characterized in that no steel bars are reserved on the upper side surface, the lower side surface, the left side surface and the right side surface of the prefabricated external wall panel, bolt sleeves and grouting sleeves are pre-embedded at set positions, vertical steel bars at horizontal seams between the prefabricated external wall panel and a floor slab are connected through the grouting sleeves, and after the prefabricated external wall panel is hoisted in place, connecting bolts are screwed into the corresponding bolt sleeves to enable the connecting bolts to be anchored into a cast-in-place structure, so that anchoring connection between the prefabricated external wall panel and the cast-in-place structure is realized.
2. The method for connecting the prefabricated external wall panel without ribs according to claim 1, wherein after the prefabricated external wall panel is hoisted in place, the prefabricated external wall panel is temporarily fixed by at least two inclined struts, one ends of the inclined struts are connected with reserved connecting pieces arranged on the prefabricated external wall panel through specific bolts, and the other ends of the inclined struts are anchored with ground embedded parts.
3. The prefabricated external wall panel unbending type lateral connection method as claimed in claim 2, wherein the diagonal brace comprises a rod member and a threaded sleeve which is threaded at both ends of the rod member, the perpendicularity of the prefabricated external wall panel is adjusted by simultaneously rotating the threaded sleeve at both ends of the rod member, and the exposed length of the part of the rod member which is in threaded fit with the two threaded sleeves when the threaded sleeve is adjusted is not more than 3/5 of the total length of the part.
4. The prefabricated external wall panel unbending type lateral connection method according to any one of claims 1 to 3, wherein the diameter of the grouting sleeve is larger than at least two times the diameter of the vertical reinforcing steel bars.
5. The prefabricated external wall panel rib-free type side connection method according to any one of claims 1 to 3, wherein a groove is formed in the surface of the prefabricated external wall panel connected with the cast-in-place structure, a flexible material partition is filled in the groove, and the connecting bolt penetrates through the flexible material partition and is connected with the embedded bolt sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011588702.8A CN112627387A (en) | 2020-12-29 | 2020-12-29 | Rib-free type side connection method for prefabricated external wall panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011588702.8A CN112627387A (en) | 2020-12-29 | 2020-12-29 | Rib-free type side connection method for prefabricated external wall panel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112627387A true CN112627387A (en) | 2021-04-09 |
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| CN202011588702.8A Pending CN112627387A (en) | 2020-12-29 | 2020-12-29 | Rib-free type side connection method for prefabricated external wall panel |
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| CN111535490A (en) * | 2020-05-11 | 2020-08-14 | 中力建设集团有限公司 | Fabricated floor and construction method thereof |
| CN113931340A (en) * | 2021-10-09 | 2022-01-14 | 湖南大学设计研究院有限公司 | Assembled semi-embedded external wall panel and building |
| CN114412000A (en) * | 2021-12-24 | 2022-04-29 | 张华� | Prefabricated wallboard for building construction |
| CN114541774A (en) * | 2022-03-28 | 2022-05-27 | 中建八局第二建设有限公司 | Construction method of assembled building outer wall structure |
| CN115182482A (en) * | 2022-08-25 | 2022-10-14 | 中国建筑第七工程局有限公司 | Construction method of cavity prefabricated wall body matched with external frame free |
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| CN111535490A (en) * | 2020-05-11 | 2020-08-14 | 中力建设集团有限公司 | Fabricated floor and construction method thereof |
| CN113931340A (en) * | 2021-10-09 | 2022-01-14 | 湖南大学设计研究院有限公司 | Assembled semi-embedded external wall panel and building |
| CN114412000A (en) * | 2021-12-24 | 2022-04-29 | 张华� | Prefabricated wallboard for building construction |
| CN114541774A (en) * | 2022-03-28 | 2022-05-27 | 中建八局第二建设有限公司 | Construction method of assembled building outer wall structure |
| CN114541774B (en) * | 2022-03-28 | 2024-08-16 | 中建八局第二建设有限公司 | Construction method of assembled building outer wall structure |
| CN115182482A (en) * | 2022-08-25 | 2022-10-14 | 中国建筑第七工程局有限公司 | Construction method of cavity prefabricated wall body matched with external frame free |
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