CN111677270B - Construction method for shear walls on two sides of narrow space - Google Patents
Construction method for shear walls on two sides of narrow space Download PDFInfo
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- CN111677270B CN111677270B CN202010589666.0A CN202010589666A CN111677270B CN 111677270 B CN111677270 B CN 111677270B CN 202010589666 A CN202010589666 A CN 202010589666A CN 111677270 B CN111677270 B CN 111677270B
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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
- E04G11/00—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs
- E04G11/06—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for walls, e.g. curved end panels for wall shutterings; filler elements for wall shutterings; shutterings for vertical ducts
- E04G11/08—Forms, which are completely dismantled after setting of the concrete and re-built for next pouring
- E04G11/18—Forms, which are completely dismantled after setting of the concrete and re-built for next pouring for double walls
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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
- E04G17/00—Connecting or other auxiliary members for forms, falsework structures, or shutterings
- E04G17/06—Tying means; Spacers ; Devices for extracting or inserting wall ties
Abstract
The invention discloses a construction method of two side shear walls in a narrow space, which comprises the steps of binding shear wall steel bars, erecting side forms of the shear wall walls at two sides of a construction joint or a deformation joint, then obtaining a supporting device with the following structure, enabling the opposite surfaces of two bearing plates to be respectively abutted against the opposite surfaces of the inner side forms of the two side forms, then placing the supporting device between the inner side forms of the two side forms, pressing the bearing plates to limit the position of the supporting device, enabling the two bearing plates to be respectively and completely abutted against the opposite surfaces of the inner side forms of the two side forms, completing the support of the inner side forms of the side forms, then adopting a plurality of groups of supporting devices to sequentially support the left end and the right end of the inner side forms of the two side forms and the height direction, then carrying out concrete pouring of the shear walls at two sides, and carrying out maintenance and forming. The construction method for the shear walls on the two sides of the narrow space solves the problem of low efficiency of a mode of erecting the narrow template in the space between the shear walls on the two sides, is simple to operate, and cannot influence subsequent construction of construction joints and deformation joints.
Description
Technical Field
The invention relates to the technical field of shear walls, in particular to a construction method of shear walls on two sides of a narrow space.
Background
At present, the building industry is greatly developed, and the modeling structures of buildings are more and more beautiful. For narrow spaces of a building concrete structure, such as expansion joints and construction joints beside double shear walls, and outer vertical surface models with narrow spaces in buildings, some formwork support pieces are required to support, so that the width of the construction joints or the expansion joints is ensured, and the verticality of the shear walls on two sides formed at the same time is ensured.
However, for the traditional formwork support piece, mainly a wood box made of wood is adopted, a foam material is clamped in the middle of the wood box, or a foam extruded sheet is directly clamped between two side dies, and the support pieces have the following problems in actual construction. And under the two-way extrusion effect of the shear walls on the two sides, the traditional wood box and the foam are clamped and are not easy to take out, so that the waste phenomenon of the wood and the foam board is serious, and the foam or the batten occupies the gap space and influences the subsequent construction of the construction joint and the deformation joint. Therefore, it is very important to provide a construction method capable of constructing the shear walls on two sides of the narrow space.
Disclosure of Invention
Aiming at the defects of the prior art, the technical problems to be solved by the invention are as follows: the construction method for the shear walls on the two sides of the narrow space solves the problem that the supporting mode of the narrow template in the space between the shear walls on the two sides is low in efficiency, is simple to operate, and cannot affect the subsequent construction of construction joints and deformation joints.
In order to solve the technical problems, the invention adopts the following technical scheme:
a construction method of shear walls on two sides of a narrow space comprises the following steps of A, binding shear wall steel bars, then erecting side forms of shear wall walls on two sides of a construction joint or a deformation joint, transversely penetrating a plurality of counter-pulling screw rods to limit and fix outer side templates of the two side forms, wherein the distance between the inner side templates of the two side forms is the distance of the construction joint or the deformation joint; B. then obtaining a supporting device with the following structure, wherein the supporting device comprises two left and right pressure bearing plates which are vertically arranged oppositely, one surfaces of the two pressure bearing plates which are opposite to each other are respectively used for abutting against the surfaces opposite to the inner side templates of the two side molds, and a supporting and adjusting mechanism which is used for enabling the two pressure bearing plates to move oppositely or oppositely along the horizontal direction is arranged between the two pressure bearing plates; the support adjusting mechanism comprises a screw rod horizontally arranged along the length direction of the bearing plate and two nut seats arranged at the front end and the rear end of the screw rod, and the nut seats are arranged on the screw rod in a penetrating way and are in threaded fit with the screw rod so that the nut seats can move along the axial direction of the screw rod; the left side and the right side of each nut seat in the length direction of the screw rod are respectively provided with a left connecting rod and a right connecting rod in a hinged mode, and the other ends of the left connecting rod and the right connecting rod are respectively connected with the bearing plates on the corresponding sides in a hinged mode; the hinge shafts among the nut seat, the left connecting rod and the right connecting rod are all vertically arranged, and the nut seat, the left connecting rod and the right connecting rod are positioned on the same horizontal plane, so that the nut seat drives the left connecting rod and the right connecting rod to rotate and form different angles on the horizontal plane; the internal threads of the front nut seat and the rear nut seat on the screw rod are arranged by positive and negative threads; C. then, the supporting device is placed between the inner side templates of the two side templates, the pressure bearing plates are pressed to limit the position of the inner side templates, then the screw rod is rotated in the forward direction, the screw rod rotates to drive the nut seats to move in the opposite direction in the axial direction of the screw rod, the pressure bearing plates on the two sides of the screw rod move in the opposite direction, the distance between the outer side surfaces of the two pressure bearing plates is gradually increased, the two pressure bearing plates are completely abutted against the opposite surfaces of the inner side templates of the two side templates respectively, and the inner side template support of the side template at the position is completed; D. then, sequentially supporting the left end, the right end and the height direction of the inner side templates of the two side molds by adopting a plurality of groups of supporting devices, and repeating the step C by each group of supporting devices to complete uniform support of the inner side templates of the two side molds; E. after the supporting of the inner side templates of the two side templates is finished, concrete pouring of the shear walls on the two sides is carried out, and the concrete is maintained and molded; F. after concrete curing of the shear walls is completed, disassembling the supporting device between the two shear walls; and F, repeating the step F until all the supporting devices between the two shear walls are taken out.
In the construction method of the shear wall, the inner side templates of the shear wall at two sides of the construction joint or the deformation joint can be effectively supported by the supporting device, the screw rod is matched with the screw nut seat through threads, and the screw rod provides resistance for the screw nut seat, so that the two pressure bearing templates can resist the extrusion force of concrete in the shear wall to the side templates, thereby providing enough supporting effect for the side templates of the shear wall and avoiding the phenomenon of mold expansion or mold explosion when the side templates pour concrete. The supporting and adjusting mechanism arranged between the two bearing plates can quickly adjust the distance between the two bearing plates, so that the requirements of deformation joints with different widths or different narrow spaces in the construction process are met, and the advantage of flexibly adjusting the distance between the bearing plates is achieved. Most importantly, when the supporting device is installed by a worker, the distance between the bearing plates can be adjusted to abut against the side molds only by rotating the screw rod, so that the installation process of the supporting device is very simple and labor-saving, and after the pouring and maintenance of the subsequent shear walls are completed, the supporting device is easy to disassemble and can be repeatedly used, the waste of building materials can not be caused, and the problem of difficulty in cleaning building residues in deformation joints or expansion joints between two shear walls is also solved.
In the step B, before the support device is placed between the inner side formworks of the two side formworks, the distance between the two bearing plates of the support device is adjusted to enable the distance between the outer side surfaces of the two bearing plates to be slightly smaller than the width of a construction joint or a deformation joint, and then the support device which is roughly adjusted is placed between the inner side formworks of the two side formworks.
Like this, adjust strutting arrangement through having the abundant space outside construction joint or expansion joint, let the interval of two bearing plate lateral surfaces slightly be less than the width of construction joint or movement joint, it is more convenient like this that the workman operates, and the strutting arrangement who will tentatively adjust like this puts into the back between the inboard template of two side moulds, only need carry out small amplitude to the lead screw and adjust, alright support tightly completely with the face that the inboard template is relative of two side moulds respectively in order to let two bearing plates.
Preferably, in step B, an upper group and a lower group of the support adjusting mechanisms are arranged between the two pressure plates in each group of the support devices, and the upper group and the lower group of the support adjusting mechanisms are overlapped on a horizontal projection.
Therefore, the bearing plates mainly bear the extrusion force of the concrete in the shear wall to the inner side die, the gravity of the concrete and the internal stress generated in the curing process are large, and therefore in order to guarantee the anti-extrusion capacity of the two bearing plates, the bearing plates are supported by the upper and lower groups of supporting and adjusting mechanisms, the bearing plates on the two sides are provided with supporting force by utilizing the resistance of the nut seats and the lead screws on the supporting and adjusting mechanisms, and the bearing plates can be guaranteed to be capable of better effectively supporting the inner side die of the shear wall.
In the step B, a calibrating mechanism for calibrating the verticality of the templates on the two sides is further arranged on the two bearing plates of each group of supporting devices, the calibrating mechanism comprises a positioning plate and a positioning frame, the positioning plate and the positioning frame are both vertically fixed on the bearing plates and arranged towards the direction of the screw rod, and the positioning plate is positioned right above the positioning frame; the positioning frame is provided with a vertically arranged mounting hole, a laser emitter is mounted at the mounting hole, and the emitting direction of the laser emitter faces downwards vertically; the positioning plate is provided with a positioning groove; when the bearing plate is in a vertical state, the centers of the mounting holes and the centers of the positioning grooves are vertical lines.
Therefore, the deformation joint or the construction joint on the same side can be provided with a plurality of groups of the supporting devices along the height direction between two inner side molds, so that the side molds can be effectively supported. And because the outer side dies of the two shear walls are directly and fixedly connected through the penetrating counter-pulling screw rods, only the outer side dies of the counter-pulling screw rods are provided with the locking bolts, so that the horizontal constraint force of two inner side die surfaces of the two shear walls is smaller, and when the supporting device is adopted to support the inner side dies of the two side dies, the distances between the bearing plates of the upper and lower groups of supporting devices cannot be guaranteed to be the same, so that the upper parts of the inner side dies of the side dies are easily inclined or offset. Therefore, in the method, through the calibration mechanism arranged on the bearing plates, the laser emitted by the laser emitters on the bearing plates in the upper supporting device is aligned and calibrated with the positioning grooves on the bearing plates in the lower supporting device, so that the distance between the bearing plates is adjusted, and after the laser emitted by the laser emitters on the two bearing plates in the upper supporting device is aligned with the positioning grooves on the left bearing plate and the right bearing plate in the lower supporting device, the verticality of the inner side template of the side mold meets the requirement.
Preferably, in the step B, the positioning groove is a strip-shaped groove, the length direction of the groove is arranged in the same direction as the length direction of the bearing plate, and a red identification line is marked on the bottom surface of the positioning groove along the central line in the length direction.
In this way, since the pressure bearing plates of the upper and lower support devices mounted on the same side mold in the height direction are not necessarily located on the same vertical line, the light emitted by the laser emitter located on the upper support device may not fall on the center of the positioning groove, and may fall in front of or behind the center of the positioning groove. Consequently through setting up the constant head tank into rectangular shape groove, and the tank bottom surface of constant head tank has red discernment line of mark on its length direction's the central line, even if the strutting arrangement's of upside laser emitter and the constant head tank on the downside strutting arrangement are not on same vertical line like this. When the distance between the two bearing plates of the upper side supporting device is equal to the distance between the lower side bearing plates, the light emitted by the laser emitter of the upper side supporting device can fall on the center line of the bottom surface of the positioning groove without fail, so that the problem of the front-back distance error of the upper side supporting device and the lower side supporting device is solved.
Specifically, when the upper and lower supporting devices are installed, the upper supporting device is installed first, the distance between the outer sides of the two bearing plates of the upper supporting device is equal to the distance between the construction joints or the deformation joints, and then the laser transmitter of the upper supporting device is opened. And then the lower side supporting device is installed, and the screw rod is adjusted, so that laser points emitted by the laser emitters on the left side and the right side of the upper side supporting device are all positioned on the center line of the positioning grooves on the two bearing plates of the lower side supporting device, and the verticality of the inner side template of the side mold meets the requirement. If the laser points emitted by the laser emitters are not positioned on the central line of the positioning groove of the lower side supporting device, the screw rod is continuously adjusted until the laser points emitted by the laser emitters on the left side and the right side of the upper side supporting device are positioned on the central line of the positioning groove on the two pressure bearing plates of the lower side supporting device.
Preferably, the tail end of the positioning plate at the inner side of the positioning groove is provided with a reflector perpendicular to the plate surface of the positioning plate, and the mirror surface of the reflector faces the direction of the positioning groove.
Like this, because strutting arrangement is located the narrow and small space of construction joint or movement joint, light is relatively poor, and the sight is just blocked easily originally, consequently is provided with the reflector through the end in the constant head tank inboard, like this the staff when accommodate the lead screw, alright direct through looking over the reflector, just can observe the relation of laser spot and red mark line that laser emitter takes place, made things convenient for operating personnel to the regulation and the calibration of lead screw to can adjust the limit and observe, improve work efficiency.
In the step C, after the two bearing plates completely abut against the surfaces of the inner side templates of the two side molds, respectively, a locking nut is further arranged between the nut seat and the outer end of the adjacent screw rod on the screw rod, and the locking nut is in threaded connection with the screw rod to limit the position of the nut seat.
Therefore, in the process of pouring concrete into the shear wall, the outward extrusion force of the side dies is larger, so that the nut seat on the screw rod has the tendency of moving towards the outer end, the nut seat is locked and fixed through the locking nut arranged on the outer side of the nut seat, the resistance of the nut seat is increased, and the supporting capacity of the two bearing plates for the side dies is ensured.
Preferably, in the step B, one end of the outer side of the screw rod is provided with an L-shaped rotating handle.
Like this, through set up the twist grip in the outside end of lead screw, the workman is more laborsaving when rotating the lead screw to it is more convenient to use.
In conclusion, the beneficial effects of the invention are as follows: in the shear wall construction method, the inner side templates of the shear wall at two sides of the construction joint or the deformation joint can be effectively supported through the supporting device, the screw thread matching of the screw rod and the nut seat is utilized, and the screw rod provides resistance for the nut seat, so that the two pressure bearing templates can resist the extrusion force of concrete in the shear wall to the side templates, sufficient supporting effect is provided for the side templates of the shear wall, and the phenomenon of mold expansion or mold explosion when the side templates pour concrete is avoided. The supporting and adjusting mechanism arranged between the two bearing plates can quickly adjust the distance between the two bearing plates, so that the requirements of deformation joints with different widths or different narrow spaces in the construction process are met, and the advantage of flexibly adjusting the distance between the bearing plates is achieved. Most importantly, when the supporting device is installed by a worker, the distance between the bearing plates can be adjusted to abut against the side molds only by rotating the screw rod, so that the installation process of the supporting device is very simple and labor-saving, and after the pouring and maintenance of the subsequent shear walls are completed, the supporting device is easy to disassemble and can be repeatedly used, the waste of building materials can not be caused, and the problem of difficulty in cleaning building residues in deformation joints or expansion joints between two shear walls is also solved.
Drawings
For purposes of promoting a better understanding of the objects, aspects and advantages of the invention, reference will now be made in detail to the present invention as illustrated in the accompanying drawings, in which:
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of a support device according to the present invention;
fig. 3 is a top view of a support device according to the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Reference numerals in the drawings of the specification include: the device comprises an inner side template 1, an outer side template 2, a supporting device 3, a bearing plate 4, a left connecting rod 5, a right connecting rod 6, a nut seat 7, a screw rod 8, a rotating handle 9, a positioning plate 10, a positioning frame 11 and a laser emitter 12.
A, firstly binding reinforcing steel bars of the shear wall, then erecting side forms of the shear wall bodies on two sides of a construction joint or a deformation joint, transversely penetrating a plurality of counter-pulling screws 8 to limit and fix outer side templates 2 of the two side forms, wherein the distance between the inner side templates 1 of the two side forms is the distance of the construction joint or the deformation joint; B. then, a supporting device 3 with the following structure is obtained, as shown in fig. 1, fig. 2 and fig. 3, the supporting device 3 includes two pressure bearing plates 4 which are vertically arranged oppositely, the opposite surfaces of the two pressure bearing plates 4 are respectively used for abutting against the opposite surfaces of the inner side templates 1 of the two side molds, and a supporting and adjusting mechanism for enabling the two pressure bearing plates 4 to respectively move in the horizontal direction in the opposite direction or in the opposite direction is further arranged between the two pressure bearing plates 4; the support adjusting mechanism comprises a screw rod 8 horizontally arranged along the length direction of the bearing plate 4 and two nut seats 7 arranged at the front end and the rear end of the screw rod 8, and the nut seats 7 are arranged on the screw rod 8 in a penetrating manner and are in threaded fit with the screw rod 8 so that the nut seats 7 can move along the axial direction of the screw rod 8; the left side and the right side of each nut seat 7 in the length direction of the screw rod 8 are respectively provided with a left connecting rod 5 and a right connecting rod 6 in a hinged mode, and the other ends of the left connecting rod 5 and the right connecting rod 6 are respectively connected with the bearing plates 4 on the corresponding sides in a hinged mode; the hinge shafts among the nut seat 7, the left connecting rod 5 and the right connecting rod 6 are all vertically arranged, and the nut seat 7, the left connecting rod 5 and the right connecting rod 6 are positioned on the same horizontal plane, so that the nut seat 7 drives the left connecting rod 5 and the right connecting rod 6 to rotate and form different angles on the horizontal plane; wherein, the internal threads of the front nut seat 7 and the rear nut seat 7 on the screw rod 8 are arranged by positive and negative threads; C. then the supporting device 3 is placed between the inner side templates 1 of the two side molds, the pressure bearing plates 4 are pressed to limit the position of the inner side templates 1, then the screw rod 8 is rotated in the forward direction, the screw rod 8 rotates to drive the nut seats 7 to move in the axial direction of the screw rod 8 in the opposite direction, the pressure bearing plates 4 on the two sides of the screw rod 8 move in the opposite direction, the distance between the outer side surfaces of the two pressure bearing plates 4 is gradually increased, the two pressure bearing plates 4 are respectively and completely abutted against the opposite surfaces of the inner side templates 1 of the two side molds, and the supporting of the inner side templates 1 of the side molds at the position is completed; D. then, a plurality of groups of supporting devices 3 are adopted to sequentially support the left end, the right end and the height direction of the inner side template 1 of the two side molds, and each group of supporting devices 3 repeats the step C to complete uniform support of the inner side template 1 of the two side molds; E. after the supporting of the inner side formworks 1 of the two side formworks is finished, concrete pouring of the shear walls on the two sides is carried out, and the concrete is maintained and molded; F. after concrete curing of the shear walls is completed, disassembling the supporting device 3 between the two shear walls; firstly, the screw rod 8 is rotated reversely, the two nut seats 7 move back and forth along the axial direction of the screw rod 8, the distance between the two pressure bearing plates 4 is reduced, the two pressure bearing plates 4 are respectively separated from the inner side templates 1 of the two side molds, the supporting device 3 is taken out, and the step F is repeated until all the supporting devices 3 between the two shear walls are taken out.
In the construction method of the shear wall, the support device 3 can effectively support the shear wall inner side templates 1 at two sides of a construction joint or a deformation joint, and the screw rod 8 is matched with the screw of the nut seat 7, so that the screw rod 8 provides resistance for the nut seat 7, and the two pressure bearing plates 4 can resist the extrusion force of concrete in the shear wall to the side templates, thereby providing enough support effect for the side templates of the shear wall and avoiding the phenomenon of mold expansion or mold explosion when the side templates pour concrete. Through the support adjustment mechanism who sets up between two bearing plates 4, can the interval between two bearing plates 4 of quick adjustment to adapt to the deformation joint of different width or the demand in different narrow and small spaces in the work progress, consequently have the nimble adjustable advantage of bearing plate 4 interval. Most importantly, when the supporting device 3 is installed by a worker, the distance between the bearing plates 4 can be adjusted to abut against the side mold only by rotating the screw rod 8, so that the installation process of the supporting device 3 is very simple and labor-saving, and after the pouring and maintenance of the subsequent shear walls are completed, the supporting device 3 is easy to disassemble and can be repeatedly used, the waste of building materials can not be caused, and the problem of difficulty in cleaning residual building residues in deformation joints or expansion joints between two shear walls is also solved.
In a specific embodiment, in step B, before the support device 3 is placed between the inner formworks 1 of the two side forms, the distance between the two bearing plates 4 of the support device 3 is adjusted to make the distance between the outer side surfaces of the two bearing plates 4 slightly smaller than the width of a construction joint or a deformation joint, and then the roughly adjusted support device 3 is placed between the inner formworks 1 of the two side forms.
Like this, adjust strutting arrangement 3 through having the abundant space outside construction joint or expansion joint, let the interval of two bearing plate 4 lateral surfaces slightly be less than the width of construction joint or movement joint, it is more convenient like this that the workman operates, after strutting arrangement 3 that will tentatively adjust like this put into the inboard template 1 within a definite time of two side moulds, only need carry out small amplitude to lead screw 8 and adjust, alright support tightly completely with the inboard template 1 relative face of two side moulds respectively with letting two bearing plate 4.
In a specific embodiment, in step B, two upper and lower sets of the support adjusting mechanisms are disposed between the two pressure bearing plates 4 in each set of the support devices 3, and the two upper and lower sets of the support adjusting mechanisms are overlapped on a horizontal projection.
Thus, because the bearing plate 4 mainly bears the extrusion force of the concrete in the shear wall to the inner side die, the self gravity of the concrete and the internal stress generated in the curing process are large, so in order to ensure the anti-extrusion capacity of the two bearing plates 4, the bearing plate 4 is supported by the upper and lower groups of supporting and adjusting mechanisms, the resistance of the upper nut seat 7 and the lead screw 8 of the supporting and adjusting mechanisms is utilized to provide the supporting force for the bearing plates 4 on the two sides, and the bearing plates 4 can be better and effectively supported for the inner side die of the shear wall.
In a specific embodiment, in the step B, a calibrating mechanism for correcting perpendicularity of the templates on two sides is further arranged on the two bearing plates 4 of each group of supporting devices 3, the calibrating mechanism includes a positioning plate 10 and a positioning frame 11, the positioning plate 10 and the positioning frame 11 are both vertically fixed on the bearing plates 4 and arranged towards the direction of the screw rod 8, and the positioning plate 10 is located right above the positioning frame 11; the positioning frame 11 is provided with a vertically arranged mounting hole, a laser emitter 12 is mounted at the mounting hole, and the emitting direction of the laser emitter 12 faces downwards vertically; the positioning plate 10 is provided with a positioning groove; when the bearing plate 4 is in a vertical state, the centers of the mounting holes and the positioning groove are vertical lines.
Like this, because can be provided with this strutting arrangement 3 of multiunit along the direction of height between the two inboard moulds of the movement joint or the construction joint of same side, just so can guarantee to carry out effective support to the side form. And because the outer side dies of the two shear walls are directly and fixedly connected through the penetrating counter-pulling screw rods 8, only the outer side dies of the counter-pulling screw rods 8 are provided with locking bolts, so that the horizontal constraint force of the two inner side die surfaces of the two shear walls is small, and when the supporting devices 3 are adopted to support the inner side dies 1 of the two side dies, the distances between the pressure bearing plates 4 of the upper and lower groups of supporting devices 3 cannot be guaranteed to be the same, so that the upper parts of the inner side dies 1 of the side dies are easily inclined or deviated. Therefore, in the method, through the calibration mechanism arranged on the bearing plates 4, the laser emitted by the laser emitters 12 on the bearing plates 4 in the upper supporting device 3 is aligned and calibrated with the positioning grooves on the bearing plates 4 in the lower supporting device 3, so that the distance between the bearing plates 4 is adjusted, and after the laser emitted by the laser emitters 12 on the two bearing plates 4 in the upper supporting device 3 is aligned with the positioning grooves on the left and right bearing plates 4 in the lower supporting device 3, the verticality of the inner side template 1 of the side mold meets the requirement.
In a specific embodiment, in step B, the positioning groove is a long strip-shaped groove, the length direction of the groove is arranged in the same direction as the length direction of the pressure bearing plate 4, and a red identification line is marked on the bottom surface of the positioning groove along the central line in the length direction.
In this way, since the pressure bearing plates 4 of the upper and lower supporting devices 3 installed on the same side mold in the height direction are not necessarily located on the same vertical line, the light emitted from the laser emitter 12 located on the upper supporting device 3 may not necessarily fall on the center of the positioning groove, and may fall in front of or behind the center of the positioning groove. Consequently through setting up the constant head tank into rectangular shape groove, and the tank bottom surface of constant head tank is marked with red discernment line on its length direction's the central line, even if the laser emitter 12 of the strutting arrangement 3 of upside and the constant head tank on the strutting arrangement 3 of downside are not on same vertical line like this. When the distance between the two bearing plates 4 of the upper supporting device 3 is equal to the distance between the lower bearing plates 4, the light emitted by the laser emitter 12 of the upper supporting device 3 is bound to fall on the center line of the bottom surface of the positioning groove, thereby solving the problem of the front-back distance error of the upper and lower supporting devices 3.
Specifically, when the upper and lower supporting devices 3 are installed, the upper supporting device 3 should be installed first, the distance between the outer sides of the two pressure bearing plates 4 of the upper supporting device 3 is equal to the distance between the construction joints or the deformation joints, and then the laser emitter 12 of the upper supporting device 3 is opened. Then the lower supporting device 3 is installed, the screw rod 8 is adjusted, so that laser points emitted by the laser emitters 12 on the left side and the right side of the upper supporting device 3 are all positioned on the center line of the positioning grooves on the two bearing plates 4 of the lower supporting device 3, and the verticality of the inner side template 1 of the side mold meets the requirement. If the laser points emitted by the laser emitters 12 are not located on the center line of the positioning grooves of the lower supporting device 3, the adjustment screw 8 is continuously adjusted until the laser points emitted by the laser emitters 12 on the left and right sides of the upper supporting device 3 are located on the center line of the positioning grooves on the two bearing plates 4 of the lower supporting device 3.
In a specific embodiment, a reflective mirror is mounted at the end of the positioning plate 10 at the inner side of the positioning slot and perpendicular to the plate surface of the positioning plate 10, and the mirror surface of the reflective mirror faces the direction of the positioning slot.
Like this, because strutting arrangement 3 is located the narrow and small space of construction joint or movement joint, light is relatively poor, and the sight is just blocked easily originally, consequently is provided with the reflector through the end at the constant head tank inboard, like this the staff when accommodate the lead screw 8, alright direct through looking over the reflector, just can observe the relation of laser spot and red mark line that laser emitter 12 took place, made things convenient for operating personnel to lead screw 8's regulation and calibration to can adjust the while and observe, improved work efficiency.
In a specific embodiment, in step C, after the two pressure bearing plates 4 completely abut against the surfaces of the inner side forms 1 of the two side forms, respectively, a locking nut is further disposed on the lead screw 8 between the nut seat 7 and the outer end of the adjacent lead screw 8, and the locking nut is in threaded connection with the lead screw 8 and the nut seat 7 for limiting.
Therefore, in the process of pouring concrete on the shear wall, the outward extrusion force of the side mold is larger, so that the nut seat 7 on the screw rod 8 has the tendency of moving towards the outer end, the nut seat 7 is locked and fixed through the locking nut arranged on the outer side of the nut seat 7, the resistance of the nut seat 7 is increased, and the supporting capacity of the two pressure bearing plates 4 on the side mold is ensured.
In the specific implementation process, in the step B, one end of the outer side of the screw rod 8 is provided with an L-shaped rotating handle 9.
Like this, through set up twist grip 9 at the outside end of lead screw 8, the workman is more laborsaving when rotating lead screw 8 to it is more convenient to use.
Finally, it is noted that the above-mentioned embodiments illustrate rather than limit the invention, and that, while the invention has been described with reference to preferred embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (6)
1. A construction method of shear walls on two sides of a narrow space is characterized in that: comprises the following steps of (a) carrying out,
A. firstly, binding reinforcing steel bars of a shear wall, then erecting side forms of shear wall bodies on two sides of a construction joint or a deformation joint, and limiting and fixing outer side templates of the two side forms by transversely penetrating a plurality of counter-pulling screw rods, wherein the distance between the inner side templates of the two side forms is the distance of the construction joint or the deformation joint;
B. then obtaining a supporting device with the following structure, wherein the supporting device comprises two left and right pressure bearing plates which are vertically arranged oppositely, one surfaces of the two pressure bearing plates which are opposite to each other are respectively used for abutting against the surfaces opposite to the inner side templates of the two side molds, and a supporting and adjusting mechanism which is used for enabling the two pressure bearing plates to move oppositely or oppositely along the horizontal direction is arranged between the two pressure bearing plates; the support adjusting mechanism comprises a screw rod horizontally arranged along the length direction of the bearing plate and two nut seats arranged at the front end and the rear end of the screw rod, and the nut seats are arranged on the screw rod in a penetrating way and are in threaded fit with the screw rod so that the nut seats can move along the axial direction of the screw rod; the left side and the right side of each nut seat in the length direction of the screw rod are respectively provided with a left connecting rod and a right connecting rod in a hinged mode, and the other ends of the left connecting rod and the right connecting rod are respectively connected with the bearing plates on the corresponding sides in a hinged mode; the hinge shafts among the nut seat, the left connecting rod and the right connecting rod are all vertically arranged, and the nut seat, the left connecting rod and the right connecting rod are positioned on the same horizontal plane, so that the nut seat drives the left connecting rod and the right connecting rod to rotate and form different angles on the horizontal plane; the internal threads of the front nut seat and the rear nut seat on the screw rod are arranged by positive and negative threads;
C. then, the supporting device is placed between the inner side templates of the two side templates, the pressure bearing plates are pressed to limit the position of the inner side templates, then the screw rod is rotated in the forward direction, the screw rod rotates to drive the nut seats to move in the opposite direction in the axial direction of the screw rod, the pressure bearing plates on the two sides of the screw rod move in the opposite direction, the distance between the outer side surfaces of the two pressure bearing plates is gradually increased, the two pressure bearing plates are completely abutted against the opposite surfaces of the inner side templates of the two side templates respectively, and the inner side template support of the side template at the position is completed;
D. then, sequentially supporting the left end, the right end and the height direction of the inner side templates of the two side molds by adopting a plurality of groups of supporting devices, and repeating the step C by each group of supporting devices to complete uniform support of the inner side templates of the two side molds;
E. after the supporting of the inner side templates of the two side templates is finished, concrete pouring of the shear walls on the two sides is carried out, and the concrete is maintained and molded;
F. after concrete curing of the shear walls is completed, disassembling the supporting device between the two shear walls; firstly, reversely rotating the screw rod, enabling the two nut seats to move back and forth along the axial direction of the screw rod, reducing the distance between the two pressure bearing plates, respectively separating the two pressure bearing plates from the inner side templates of the two side molds, taking out the supporting device, and repeating the step F until all the supporting devices between the two shear walls are taken out;
in the step B, a calibrating mechanism for correcting the verticality of the templates on the two sides is further arranged on the two bearing plates of each group of supporting devices, the calibrating mechanism comprises a positioning plate and a positioning frame, the positioning plate and the positioning frame are both vertically fixed on the bearing plates and arranged towards the direction of the screw rod, and the positioning plate is positioned right above the positioning frame; the positioning frame is provided with a vertically arranged mounting hole, a laser emitter is mounted at the mounting hole, and the emitting direction of the laser emitter faces downwards vertically; the positioning plate is provided with a positioning groove; when the pressure bearing plate is in a vertical state, the centers of the mounting holes and the positioning groove are vertical lines;
in step B, the constant head tank is rectangular shape groove, and the length direction of groove sets up with the length direction syntropy of bearing plate, the tank bottom surface of constant head tank is followed and is annotated red discernment line on its ascending central line of length direction.
2. The construction method of the shear wall on two sides of the narrow space according to claim 1, characterized in that: in the step B, before the support device is placed between the inner side templates of the two side templates, the distance between the two pressure bearing plates of the support device is adjusted to enable the distance between the outer side surfaces of the two pressure bearing plates to be slightly smaller than the width of a construction joint or a deformation joint, and then the support device which is roughly adjusted is placed between the inner side templates of the two side templates.
3. The construction method of the shear wall on two sides of the narrow space according to claim 1, characterized in that: in the step B, an upper group of support adjusting mechanisms and a lower group of support adjusting mechanisms are arranged between the two pressure plates in each group of support devices, and the upper group of support adjusting mechanisms and the lower group of support adjusting mechanisms are overlapped on a horizontal projection.
4. The construction method of the shear wall on two sides of the narrow space according to claim 1, characterized in that: the tail end of the positioning plate at the inner side of the positioning groove is perpendicular to the plate surface of the positioning plate and is provided with a reflector, and the mirror surface of the reflector faces the direction of the positioning groove.
5. The construction method of the shear wall on two sides of the narrow space according to claim 1, characterized in that: in the step C, after the two bearing plates are respectively and completely abutted against the surfaces of the inner side templates of the two side molds, a locking nut is further arranged between the nut seat and the outer end of the adjacent screw rod on the screw rod, and the locking nut is in threaded connection with the screw rod to limit the position of the nut seat.
6. The construction method of the shear wall on two sides of the narrow space according to claim 1, characterized in that: in the step B, one end of the outer side of the screw rod is provided with an L-shaped rotating handle.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112576035A (en) * | 2020-12-11 | 2021-03-30 | 王小明 | Opposite-pulling screw rod for shear wall formwork erection construction and construction method thereof |
| CN112942601A (en) * | 2021-04-10 | 2021-06-11 | 吴江兴盛建设工程有限公司 | Construction joint template supporting system and construction method thereof |
| CN113605686B (en) * | 2021-08-24 | 2023-03-07 | 无锡市钱桥建筑安装工程有限公司 | Building structure movement joint template strutting arrangement |
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