CN111042574A - Protection device for outer wall and construction method thereof - Google Patents
Protection device for outer wall and construction method thereof Download PDFInfo
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- CN111042574A CN111042574A CN201911305538.2A CN201911305538A CN111042574A CN 111042574 A CN111042574 A CN 111042574A CN 201911305538 A CN201911305538 A CN 201911305538A CN 111042574 A CN111042574 A CN 111042574A
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- wall
- supporting
- frame
- reinforcing beam
- protection device
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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
- E04G23/00—Working measures on existing buildings
- E04G23/04—Propping of endangered or damaged buildings or building parts, e.g. with respect to air-raid action
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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
- E04G23/00—Working measures on existing buildings
- E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
- E04G23/0218—Increasing or restoring the load-bearing capacity of building construction elements
- E04G23/0222—Replacing or adding wall ties
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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
- E04G23/00—Working measures on existing buildings
- E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
- E04G23/0218—Increasing or restoring the load-bearing capacity of building construction elements
- E04G23/0229—Increasing or restoring the load-bearing capacity of building construction elements of foundations or foundation walls
Abstract
The invention relates to a protection device for an outer wall and a construction method thereof. The protection device of the outer wall comprises a reinforcing beam, a supporting device, a limiting device and a control device; the reinforcing beam is used for being fixedly connected with the wall foundation and is provided with a sliding groove; the supporting device comprises a frame and a jacking component, wherein the frame is arranged in the sliding chute, so that the supporting device is connected with the reinforcing beam in a sliding manner; one end of the jacking component is fixedly connected with the frame; the limiting device is detachably connected with the other end of the jacking component; the limiting devices are arranged on the inner side and the outer side of the outer wall; the control device is electrically connected with the top extension assembly and controls the extension and contraction of the top extension assembly so as to control the load applied to the outer wall by the protection device. The protection device of the outer wall and the construction method thereof dynamically protect the outer wall, realize the 'flexible' support protection of the whole process of the outer wall, are convenient to construct, can be used as a construction channel and a construction operation platform, and are more convenient, efficient and green to construct.
Description
Technical Field
The invention relates to the technical field of building construction, in particular to an outer wall protection device and a construction method thereof.
Background
China has a large number of historical protective buildings heritage, the existing buildings which bear and condense different historical cultural values of cities in different times are born, the internal space and the functions of the buildings cannot meet the modern use requirements due to the long-term age of many buildings, and the structures have potential safety hazards of aging, damage and the like. Therefore, how to make the buildings have a 'strong' new framework while keeping the original appearance and endow the buildings with the use function of a new era is an important proposition of the existing building modification and sustainable utilization at present. Because the existing standard, especially the earthquake fortification condition, is not suitable for the reconstruction of the existing building structure any more, and the local reinforcement reconstruction cannot meet the reconstruction requirement, the integral replacement reconstruction of the existing building is required, the internal structure (brick, wood and mixed structure) is integrally replaced by reserving the external wall body of the existing building, and the internal structure is connected with the external wall body, so that the requirements of the integral performance improvement and the modern use of the existing building are met.
The excellent historical buildings bearing the coagulation historical cultural value are usually located in central zones of cities, the external wall bodies usually mainly adopt brick structures, the structural integrity is poor, the deformation resistance is weak, the internal structures are replaced, single-side cantilevers of the wall bodies are reserved, and the overturning, the collapse, the damage and the like are easy to happen. To the outside retention wall body under the inner structure replacement, often adopt to set up steel construction scaffold and support the protection. In order to meet the requirement of protecting the wall body, the whole construction site (channel) is internally required to be fully supported by hands, so that the original narrow construction space is changed into more complex, and the construction site is not favorable for arrangement and use. Meanwhile, the steel pipe is adopted to support the wall body, and the wall body is hard to support, so that uneven stress is easily caused on the wall body, concentrated load is generated, and the stability of the wall body is damaged.
Disclosure of Invention
Accordingly, it is necessary to provide an external wall protection device and a construction method thereof, which can improve the convenience of construction and prevent the damage of the wall.
A protective device for an exterior wall, comprising:
the reinforcing beam is used for being fixedly connected with a wall foundation and is provided with a sliding groove;
the supporting device comprises a frame and a jacking assembly, the frame is installed in the sliding groove, so that the supporting device is connected with the reinforcing beam in a sliding mode; one end of the jacking component is fixedly connected with the frame;
the limiting device is detachably connected with the other end of the jacking component; the limiting devices are arranged on the inner side and the outer side of the outer wall; and
the control device is electrically connected with the top extension assembly and controls the extension and contraction of the top extension assembly so as to control the load applied to the outer wall by the protection device.
The protection device of the outer wall comprises a reinforcing beam, a sliding groove is arranged on the reinforcing beam, a support device comprises a frame and a top extension component, the frame is installed in the sliding groove, so that the support device is connected with the reinforcing beam in a sliding mode, the protection device can adjust the position and is convenient to construct, one end of the top extension component is fixedly connected with the frame, the other end of the top extension component is detachably connected with a limiting device, the limiting device is arranged on the inner side and the outer side of the outer wall, and the top extension component is connected with a control device, so that the control device controls the extension and the contraction of the top extension component to change the load applied on the outer wall by the protection device, the top extension component transmits the acting force to the outer wall through the limiting device, and the extension component is adjusted to extend and contract through the control device according to the change of the stress of the outer wall in the construction process of the outer wall to dynamically, the damage of the outer wall due to excessive local stress is avoided, the flexible support protection of the outer wall in the whole process is realized, and the reliable stress of the outer wall in the replacement process is ensured.
In one embodiment, the frame includes a support bar, a first connection portion, and a sliding portion; the sliding part is arranged at one end of the supporting rod close to the reinforcing beam, and the sliding part is arranged in the sliding groove, so that the supporting assembly is connected with the reinforcing beam in a sliding manner; the number of the supporting rods is two, and the first connecting part is connected with the supporting rods; the supporting rods comprise a first supporting rod and a second supporting rod; the sliding part is arranged at one end of the first supporting rod, and the other end of the first supporting rod is detachably connected with the second supporting rod.
In one embodiment, the frame further includes a first fixing portion, the reinforcing beam is provided with a first mounting hole, the first fixing portion is disposed in the first mounting hole in a penetrating manner, and the first fixing portion is located on a side of the frame to fix the frame.
In one embodiment, one end of the jacking assembly, which is close to the limiting device, is connected with the limiting device through a bolt.
In one embodiment, the limiting device comprises a supporting part, a counter-pull screw rod and a second connecting part; the number of the supporting parts is four, and the four supporting parts are symmetrically distributed on two sides of the outer wall; the second connecting part is connected with the two supporting parts positioned on one side of the outer wall close to the frame; the alignment screw penetrates through the outer wall and is connected with the corresponding supporting part and the second connecting part.
In one embodiment, the limiting device further comprises a cushion part, the cushion part is arranged between the supporting part close to the limiting device and the second connecting part, and/or the cushion part is arranged on one side, far away from the outer wall, of the supporting part far away from the limiting device; the pad part is a spring gasket.
In one embodiment, the frame further comprises a pushing device, one end of the pushing device is connected with one end of the frame close to the reinforcing beam, and the other end of the pushing device is detachably connected with the reinforcing beam; the pushing device pushes the supporting device to move along the extending direction of the sliding groove.
In one embodiment, the reinforcing beam further comprises a second fixing portion, the reinforcing beam is provided with a second mounting hole, the second fixing portion is connected with the pushing device, and the second fixing portion is matched with the second mounting hole.
A construction method of the protection device of the outer wall comprises the following steps:
carrying out concrete reinforcement on a wall foundation to form a reinforced beam, wherein the reinforced beam is provided with a sliding groove;
erecting a frame on the reinforcing beam, and installing the frame in the sliding groove;
fixedly connecting one end of the jacking component with the frame;
according to a drawing, limiting devices are arranged on the inner side and the outer side of the outer wall, and the limiting devices are detachably connected with the other end of the jacking component;
and electrically connecting the other end of the jacking component with a control device.
The construction method of the protective device for the outer wall is easy to operate, multiple dismantling is avoided, and cost is saved.
In one embodiment, after the step of electrically connecting the other end of the jacking assembly with the control device, the method further comprises the following steps:
a thruster is arranged between the frame and the reinforcing beam so that the protection device moves along the extension direction of the chute.
Drawings
FIG. 1 is a schematic structural view of an embodiment of a protection device for an exterior wall;
FIG. 2 is a schematic structural view of a wall foundation with an upper reinforcing beam;
FIG. 3 is a schematic view of the chute shown in FIG. 2 with a first support bar installed therein;
FIG. 4 is a schematic structural view of the first support rod shown in FIG. 3 with the first connecting member and the second support rod mounted thereon;
FIG. 5 is a structural view of the outer wall, the wall foundation and the reinforcing beam shown in FIG. 4;
FIG. 6 is a plan view of the outer wall, wall foundation and reinforcing beam shown in FIG. 5;
FIG. 7 is a front view of the jacking assembly;
FIG. 8 is a rear view of the jacking assembly;
FIG. 9 is a schematic view of the connection between the limiting device and the outer wall;
FIG. 10 is a side view of the stop device shown in FIG. 9 mounted on an exterior wall;
FIG. 11 is a schematic view of the stop device shown in FIG. 9 in connection with the roof module and the frame;
FIG. 12 is a schematic view of the connection structure of the pushing device, the reinforcing beam and the supporting rod.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1, an embodiment of a protection device 100 for an exterior wall includes a reinforcing beam 110, a supporting device, a limiting device, and a control device. The protection device 100 for the outer wall is used for the construction of repairing the outer wall, for example, is suitable for the construction protection in the process of repairing a single-side cantilever wall, and is particularly suitable for the protection of an external reserved wall when the internal structure of a brick wall is replaced. In this embodiment, the exterior wall is an exterior wall of a historical protective building, and an internal structure of the historical protective building needs to be replaced as a whole.
Specifically, as shown in fig. 2, the reinforcing beam 110 is used to be fixedly connected to the wall foundation 300, so as to increase the bearing capacity of the wall foundation 300. Wherein, the wall foundation 300 is the foundation of the outer wall 200. The reinforcing beam 110 is connected to the wall foundation 300 by means of bar planting, etc., and serves as a permanent structure for reinforcing the original building foundation (i.e., the wall foundation). The reinforcing beam 110 is a concrete beam. So that the reinforcing beam 110 is also a reinforcing beam of the wall foundation 300. Further, the reinforcing beam 110 is provided with a sliding groove 111. It should be noted that the sliding groove 111 may be a generally rectangular sliding groove, and the size of the sliding groove 111 may be determined according to the size of the sliding portion on the supporting device. In the present embodiment, the number of the sliding grooves 111 is two, and the extending directions of the two sliding grooves 111 are the same. The sliding grooves 111 are longitudinally distributed along the wall body of the outer wall 200. In other embodiments, the number of the sliding grooves 111 may be two or more. The number of runners 111 is determined according to the end configuration of the support device.
The support apparatus includes a frame 120 and a top-extension assembly 130. The frame 120 is installed in the slide groove 111 such that the supporting device is slidably coupled with the reinforcing beam 110. One end of the top extension assembly 130 is fixedly connected with the frame 120, and the other end of the top extension assembly 130 is detachably connected with the limiting device. The limiting device is arranged on the inner side and the outer side of the outer wall 200 and plays a role in supporting and protecting the outer wall 200. In addition, the top-extension assembly is electrically connected to a control device that controls the extension and retraction of the top-extension assembly 130 so as to control the protective load applied by the protective device 100 on the exterior wall 200. The top extension assembly can be a hydraulic device, the control device can be an electric control device, and at the moment, the electric control device controls extension and contraction of the hydraulic device.
In other words, when the outer wall 200 is protected, the initial load of the jacking component 130 is adjusted according to the theoretically calculated supporting force, so as to support and protect the outer wall 200. In the replacement process of the internal structure of the building, according to the stress change of the outer wall 200, the limiting device generates horizontal displacement, after the displacement change occurs, the change is transmitted to the top extension assembly 130, the top extension assembly 130 receives the stress change and then sends the stress change to the control device for position compensation, the control device adjusts the extension or contraction of the top extension assembly 130 according to the stress change, so as to change the load applied to the outer wall 200, ensure that the outer wall 200 is always vertical, realize dynamic protection of the outer wall 200, avoid damage caused by overlarge local stress of the outer wall 200, realize the whole process 'flexible' support protection of the outer wall 200, and ensure that the stress of the outer wall 200 is reliable in the replacement process.
In the protection device 100 for the outer wall, the reinforcing beam 110 is fixedly connected with the wall foundation 300, the reinforcing beam 110 is provided with the sliding groove 111, the supporting device comprises the frame 120 and the top extension assembly 130, the frame 120 is installed in the sliding groove 11, so that the supporting device is slidably connected with the reinforcing beam 110, the protection device 100 can slide in the longitudinal direction, construction is facilitated, one end of the top extension assembly 130 is fixedly connected with the frame 120, the other end of the top extension assembly 130 is detachably connected with the limiting device, the limiting device is arranged on the inner side and the outer side of the outer wall 200, the top extension assembly 1301 is connected with the control device, so that the control device controls the extension and contraction of the top extension assembly, controls the load applied on the outer wall 200 by the protection device 100, the top extension assembly 130 transmits the acting force to the outer wall 200 through the limiting device, and according to the stress change of the outer wall 200 in the construction process, the stretching of the jacking component 130 is adjusted to dynamically protect the outer wall 200, so that the damage of the outer wall 200 due to over-large local stress is avoided, the flexible support protection of the outer wall 200 in the whole process is realized, and the stress reliability of the outer wall 200 in the replacement process is ensured. In addition, the frame is connected with the reinforcing beam in a sliding mode, so that the frame can move along the sliding grooves in the reinforcing beam, repeated dismantling is avoided, and construction is facilitated.
In one embodiment, the frame 120 includes a support rod 121, a first connection portion 122, and a sliding portion 123. The sliding portion 123 is provided at an end of the support rod 121 adjacent to the reinforcing beam 110, and the sliding portion 123 is installed in the sliding groove 111 such that the support assembly is slidably coupled to the reinforcing beam 110. That is, the sliding portion 123 can slide along the slide groove 111. The sliding part 123 may be a steel shoe or a steel rail. The frame 120 is temporarily fixed with the reinforcing beam 110 while the supporting assembly supports the protective outer wall 200.
The number of the support rods 121 is two, and the first connecting portion 122 connects the two support rods 121. Specifically, as shown in fig. 3, the supporting rod 121 may be a vertical rod, and the material used for the supporting rod may be steel or the like. The support bars 121 are disposed parallel to the outer wall 200. The first connecting portion 122 connects the supporting rods 121, thereby forming a door-type supporting system. The first connecting portion 122 and the supporting rod 121 may be connected by bolts or welding. The supporting rod 121 may be a steel upright rod, and the first connecting portion 122 may be a steel truss. It should be noted that the number of the first connecting members 122 may be plural, which may be determined according to a construction site.
Further, in an embodiment, the supporting bars 121 include a first supporting bar 121a and a second supporting bar 121 b. The sliding portion 123 is disposed at one end of the first supporting rod 121a, and the other end of the first supporting rod 121a is detachably connected to the second supporting rod 122 b. In other words, the supporting bar 121 includes two parts, which are divided into an initial section and a standard section, i.e., the first supporting bar 121a is an initial section, and one end thereof is provided with the sliding portion 123, as shown in fig. 3. The second support rod 121b is disposed on the first support rod 121a, the first support rod 121a is connected by the first connecting portion 122, and the second support rod 121b is connected by the first connecting portion 122, so as to increase the strength of the support device. The first support rod 121a, the second support member 121b and the first connecting portion 122 are all connected by bolts, so that the first support rod, the second support member and the first connecting portion are convenient to disassemble and assemble. It should be noted that the number of the second support bars 121b is determined according to the height of the outer wall 200, and a plurality of second support bars 121b may be connected to the first support bar 121 a. According to the height of the outer wall 200 and the height between layers, the number of combined pieces and the number of layers of each group of supporting devices are determined, and standard components such as supporting rods and first connecting pieces with corresponding sizes are selected. It should be noted that all components of the supporting device are standardized according to a certain modulus, so that the supporting device can be applied to external walls (reserved walls) with different heights and widths. The supporting device can be assembled according to the width of the wall body to be protected. In this embodiment, the support device requires at least two portal steel frame support systems to be assembled to form a stable support structure. It should be noted that the number of portal steel frame support systems is not limited.
Further, in one embodiment, the first support rod 121a is an "inverted T" shape, and a sliding portion 123 is installed at the bottom thereof; the second support bar 121b is "linear". In the construction process, the first support rod 121a provided with the sliding part 123 is firstly installed on the reinforcing beam 110 of the outer wall protection device, and the first support rod 121a is placed according to the position of the sliding groove 111, so that the sliding part 123 is ensured to be placed in the rectangular sliding groove.
In one embodiment, the frame 120 further includes a first fixing portion 124, the first fixing portion 124 is detachably connected to the reinforcing beam 110, and the first fixing portion 124 is located at a side of the frame 120 to fix the frame 120. Specifically, the first fixing parts 124 are located at both sides of the first support bar 121a, so as to fix the bottom of the first support bar 121 a. The first fixing portion 124 may be a steel anchor rod.
Further, in an embodiment, please refer to fig. 2, fig. 5 and fig. 6 in combination, the reinforcing beam 110 is provided with a first mounting hole 112, and the first fixing portion 124 is disposed in the first mounting hole 112 in a penetrating manner. Specifically, the first mounting hole 112 may be a pre-buried bolt anchoring hole. The number of the first mounting holes 112 is plural, the first mounting holes 112 are distributed on two sides of the sliding slot 111, and the first mounting holes 112 are arranged on two sides of the sliding slot 111 at equal intervals along the sliding rail direction, that is, the first mounting holes 112 are distributed at equal intervals along the longitudinal direction. The specific distribution distance of the first mounting holes 112 can be determined according to the standard section of the protective wall body section. The supporting device is temporarily fixed by the cooperation of the first fixing portion 124 and the first mounting hole 112. That is, the frame 120 is temporarily fixed to the reinforcing beam 110 while the supporting device supports the protection wall. Specifically, the first fixing portion 124 is aligned with the first mounting hole 112 and is rotationally fixed. When the support device needs to be moved, i.e. slid along the slide groove 111, the first fixing portion 124 can be removed. It should be noted that the position of the first mounting hole 112 is determined according to the construction condition of the outer wall 200.
In one embodiment, the support device further comprises a cover plate 125, and the cover plate 125 is placed on the first support rod 121a in an inverted T shape, thereby providing an operation platform for the support base, having an operation space. The cover plate 125 may be a steel plate cover plate.
In one embodiment, the end of the top extension assembly 130 adjacent to the stop block is pinned to the stop block. The jacking assembly 130 may be a hydraulic jacking assembly to enable hydraulic connection of the frame 120 to the stop. Specifically, referring to fig. 7 and 8, the front end 131 of the top-extending component 130 is provided with a through hole 132, and the through hole 132 may be a hexagonal hole. The rear end 133 of the jacking component 130 is fixedly connected with the supporting rod 121, and may be fixedly connected by welding or bolts. It should be noted that, when the through hole 132 is a hexagonal hole, the adopted bolt is a hexagonal bolt, so as to realize the connection between the supporting device and the limiting device.
Referring to fig. 9 and 10, the limiting device includes a supporting portion 141, a pull screw 142, and a second connecting portion 143. The number of the supporting portions 141 is four, four supporting portions 141 are symmetrically distributed at both sides of the outer wall 200, and four supporting portions 141 are symmetrically distributed between the upper and lower portions of the interlayer floor. In other words, the number of the supporting portions 141 is two, the two groups of supporting portions 141 are respectively located at the inner side and the outer side of the outer wall 200, and the supporting portions 141 at the two sides are in one-to-one correspondence. The support 141 may be a steel structural beam, and its section form may be determined according to circumstances, and may be an i-beam section or a circular tube section, etc. The second connection part 143 connects the two support parts 141 located at one side of the outer wall 200 close to the frame 120, that is, the two support parts 141 located at the outer side of the outer wall 200 of the second connection part 143. The alignment screw 142 passes through the outer wall 200 to connect the corresponding support 141 and the second connecting portion 143. Wherein, the second connecting portion 143 may be a connecting ear plate. The top-extension assembly 130 is connected to the second connection portion 143 by a latch 1431, as shown in fig. 11.
In addition, the height of the position where the limiting device is installed is the elevation position of a horizontal component (such as a floor slab and a structural beam) between layers to be disassembled, so that the original horizontal component is replaced. The support 141 supports and restrains the deformation of the wall body by a method of internal and external clamping. A group of supporting parts 141 are respectively installed between the upper layer and the lower layer of the horizontal component to be removed and at the inner side and the outer side of the outer wall 200, and the two groups of supporting parts 141 are fixed into an integrated limiting device through the opposite-pulling screw rods 142 and the second connecting parts 143. The single split bolt in the limiting device respectively penetrates through the supporting part 141 positioned on the inner side, the outer wall 200, the supporting part 141 positioned on the outer side and the second connecting part 143 from the inner side to the outer side of the outer wall 200.
Further, in an embodiment, the limiting device further includes a pad 144, the pad 144 is disposed between the supporting portion 141 close to the limiting device and the second connecting portion 143, and/or the pad 144 is disposed on a side of the supporting portion 141 far from the limiting device, which is far from the outer wall 200. That is, the cushion part 144 is provided on the side of the support part 141 away from the outer wall 200. In this embodiment, the pad 144 is disposed on the inner and outer sides of the outer wall 200, and on the side of the support 141 away from the outer wall 200. Through the arrangement of the pad part 144, the outer wall 200 is protected in a buffering way, and the damage caused by concentrated stress on the wall body is avoided. The limiting device is connected with the top extension assembly 130 through the second connecting plate 143, and transmits supporting load and coordinates deformation of the whole wall body. Further, in one embodiment, the pad 144 is a spring washer to further improve the cushioning protection.
Referring to fig. 12, in one embodiment, the protection device 100 further includes a pushing device 150, one end of the pushing device 150 is connected to one end of the frame 120 close to the reinforcing beam 110, and the other end of the pushing device 150 is detachably connected to the reinforcing beam 110. That is, one end of the pusher 150 is connected to the rear end of the frame 120, wherein the rear end is the rearmost position of the protector 100 in the longitudinal direction. The pushing device 150 pushes the protection device 100 to move along the extending direction of the chute 111, i.e. the pushing device 150 pushes the protection device 100 to move longitudinally along the chute 111.
In particular, the thruster 150 may be a hydraulic thruster. The number of the thrusters 150 is two. Two pushing devices 150 are installed and fixed at the tail of the supporting device. The pushing device 150 is connected to the reinforcing beam 110 and the tail of the supporting device. The front end of the pushing device 150 is connected to the bottom of the first supporting rod 121a, and the rear end of the pushing device 150 is connected to the reinforcing beam 110. Can realize through thrustor that strutting arrangement follows the longitudinal movement of outer wall, consequently, after the construction of the protection is supported to some regional outer wall, can directly wholly remove to treat that the construction district wall body supports the protection, realize supporting the protection to the integral movement formula of outer wall, avoided demolising many times and assemble the time limit for a project and the cost waste that brings. It should be noted that the pushing device 150 may be connected to the control device, so that the control device drives the pushing device 150 to move, and further drives the supporting device to slide along the sliding slot 111.
Further, in an embodiment, the protection device 100 further includes a second fixing portion 160, the reinforcing beam 110 is provided with a second mounting hole, the second fixing portion 160 is connected to the pushing device 150, and the second fixing portion 160 is adapted to the second mounting hole. That is, the second fixing portion 160 penetrates through the second mounting hole after passing through the pushing device 150. Specifically, a second mounting hole, i.e., a reserved bolt anchoring hole, is reserved in the reinforcing beam 112, and the second fixing portion 160 may be an anchor rod fixing member for fixing the pushing device. When the supporting device needs to be pushed, the second fixing portion 160 is fixed, the pushing device 150 is controlled, and the pushing supporting device moves to a corresponding position.
The protection device controls the stretching and the shrinking of the top stretching assembly through the control device. When the outer wall is supported and protected, the initial load of the jacking assembly is adjusted according to the supporting force calculated theoretically, and the outer wall is supported and protected. In the replacement process, according to the change of the stress of the outer wall, the jacking and extending assembly is automatically adjusted through the control device to compensate displacement deformation, dynamic protection is carried out on the protective wall, damage caused by overlarge local stress of the outer wall is avoided, the flexible support protection of the outer wall in the whole process is realized, and the reliable stress of the outer wall in the replacement process is ensured. Meanwhile, the steel structure supporting device can move longitudinally along the reserved wall body through the pushing device, and therefore after the supporting protection construction of the outer wall in a certain area is completed, the steel structure supporting device can directly and integrally move to the wall body of the construction area to be supported and protected, the integrally movable supporting protection of the outer wall is achieved, and the construction period and cost waste caused by repeated dismantling and assembling are avoided. In addition, when the supporting device protects the wall body, the bottom space of the supporting device can be used as a construction channel or a surrounding resident living channel, the upper space of the supporting device can be used as a construction platform, the work of cleaning and repairing the outer wall and the like can be carried out, the outer wall protection device can be used for supporting and protecting the outer wall, the construction space and the field distribution can be created and optimized, and the contradiction encountered in construction in the narrow space can be better solved.
The construction method of the protection device of the outer wall of the embodiment comprises the following steps:
s1: and carrying out concrete reinforcement on the wall foundation to form a reinforced beam, wherein the reinforced beam is provided with a sliding groove.
And (5) carrying out concrete reinforcement on the wall foundation to form a reinforced beam. And during reinforcement, well-reserved sliding grooves are determined according to the size of the supporting structure and the assembling quantity of the combination. And reserving a first mounting hole and a second mounting hole according to a construction drawing.
S2: and erecting a frame on the reinforcing beam, and installing the frame in the sliding groove.
Specifically, a first support rod is mounted on the reinforcing beam, a sliding portion is mounted on the first support rod, the sliding portion is placed in the sliding groove, and the first support rod is fixed to the foundation reinforcing beam through a first fixing portion. And then, mounting a first connecting piece, and connecting the first connecting piece with the first support rod to form a spliced steel structure support system. According to the number of piecing together of every group steel construction strutting arrangement's combination, piece together portal steel frame more along outer wall width direction installation to connect through first connecting piece, form stable structural system.
And then, after the first supporting rod is installed, installing a second supporting rod and a first connecting piece from a lower layer to a higher layer and from the inner side to the outer side in sequence to form a shaped steel structure supporting system.
S3: and fixedly connecting one end of the jacking component with the frame.
Specifically, a jacking and extending assembly is mounted on a supporting rod of the outer wall in a bolt or welding mode and the like, and the position of the jacking and extending assembly is the elevation position of each layer of horizontal members to be disassembled of the outer wall.
S4: according to the drawing, limiting devices are arranged on the inner side and the outer side of the outer wall, and the limiting devices are detachably connected with the other end of the jacking and extending assembly.
Specifically, a limiting device is installed at the inner side and the outer side of the outer wall and at the elevation position where the horizontal component is detached. Firstly, a group of supporting parts are respectively arranged between the upper layer and the lower layer of the horizontal component to be dismantled and on the inner side and the outer side of the outer wall, and the two groups of supporting parts on the inner side and the outer side and the second connecting part are connected and fixed through a split screw to form a whole. And then the second connecting part is connected with one end of the jacking component, which is close to the outer wall, in a bolt mode and the like.
S5: and the other end of the jacking component is electrically connected with the control device.
Specifically, the extension and retraction of the top-extension assembly is controlled by a control device.
The construction method of the protective device for the outer wall is easy to operate, multiple dismantling is avoided, and cost is saved.
Before step S1 or between step S1 and step S2, the method further includes step S0: and determining the combination splicing number and the layer number of each group of supporting devices according to the height of the outer wall and the height between layers, and selecting standard components such as steel columns, steel trusses and the like with corresponding sizes.
In one embodiment, after step S5 or between step S4 and step S5, step S41 is further included: thrusters are arranged between the frame and the reinforcing beam so that the protection device moves longitudinally along the chute. Specifically, two pushing devices are mounted at the end part of each supporting device, and the pushing devices are respectively connected with the reinforcing beam and the supporting device. The front end of the pushing device is connected with the bottom of the first supporting rod, and the rear end of the pushing device is connected with a bolt anchoring hole reserved in the reinforcing beam through a second fixing portion.
And after the installation steps are completed, the installation of the protection device of the outer wall is completed. And then, adjusting the initial load of the jacking and extending assembly acting on the outer wall through the control group device according to the calculated supporting load of the protective wall, and supporting and protecting the outer wall. And then, removing the horizontal member of the outer wall from top to bottom, carrying out corresponding construction work, adjusting the load of the jacking and stretching assembly according to the stress change of the outer wall in construction, compensating the deformation displacement difference of the outer wall, dynamically protecting the protective wall, avoiding the damage of the outer wall due to overlarge local stress, realizing the flexible support protection of the outer wall in the whole process, and ensuring the reliable stress of the outer wall in the replacement process.
After the construction of the outer wall is completed to form a stable structure system, the jacking component is unloaded through the control device, the connection between the jacking component and the limiting device is removed, the supporting device is separated from the limiting device, and the limiting device of the outer wall is removed. And then, starting a pushing device at the end part of the supporting device, pushing the supporting device, moving to the outer wall to be constructed, and carrying out the steps after the supporting device is in place, wherein the steps are not repeated until all supporting and protecting work for protecting the wall is completed.
It should be noted that the structure of the protection device, the connection relationship and the positional relationship of the components, and the like related to the construction method of the protection device for the exterior wall are as shown in the above embodiments, and are not described again here.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A protection device for an exterior wall, comprising:
the reinforcing beam is used for being fixedly connected with a wall foundation and is provided with a sliding groove;
the supporting device comprises a frame and a jacking assembly, the frame is installed in the sliding groove, so that the supporting device is connected with the reinforcing beam in a sliding mode; one end of the jacking component is fixedly connected with the frame;
the limiting device is detachably connected with the other end of the jacking component; the limiting devices are arranged on the inner side and the outer side of the outer wall; and
the control device is electrically connected with the top extension assembly and controls the extension and contraction of the top extension assembly so as to control the load applied to the outer wall by the protection device.
2. The exterior wall protection device according to claim 1, wherein the frame includes a support bar, a first connection portion, and a sliding portion; the sliding part is arranged at one end of the supporting rod close to the reinforcing beam, and the sliding part is arranged in the sliding groove, so that the supporting assembly is connected with the reinforcing beam in a sliding manner; the number of the supporting rods is two, and the first connecting part is connected with the supporting rods; the supporting rods comprise a first supporting rod and a second supporting rod; the sliding part is arranged at one end of the first supporting rod, and the other end of the first supporting rod is detachably connected with the second supporting rod.
3. The exterior wall protection device of claim 1, wherein the frame further comprises a first fixing portion, the reinforcing beam is provided with a first mounting hole, the first fixing portion is inserted into the first mounting hole, and the first fixing portion is located on a side of the frame to fix the frame.
4. The exterior wall protection device of claim 1, wherein an end of the jacking assembly adjacent to the limiting device is in a bayonet connection with the limiting device.
5. The exterior wall protection device according to any one of claims 1 to 4, wherein the limiting device comprises a support portion, a counter-pull screw rod and a second connecting portion; the number of the supporting parts is four, and the four supporting parts are symmetrically distributed on two sides of the outer wall; the second connecting part is connected with the two supporting parts positioned on one side of the outer wall close to the frame; the alignment screw penetrates through the outer wall and is connected with the corresponding supporting part and the second connecting part.
6. The exterior wall protection device of claim 5, wherein the limiting device further comprises a cushion part, the cushion part is arranged between the supporting part close to the limiting device and the second connecting part, and/or the cushion part is arranged on one side, far away from the exterior wall, of the supporting part far away from the limiting device; the pad part is a spring gasket.
7. The exterior wall protection device of claim 1, further comprising a pushing device, wherein one end of the pushing device is connected with one end of the frame close to the reinforcing beam, and the other end of the pushing device is detachably connected with the reinforcing beam; the pushing device pushes the supporting device to move along the extending direction of the sliding groove.
8. The exterior wall protection device of claim 7, further comprising a second fixing portion, wherein the reinforcing beam is provided with a second mounting hole, the second fixing portion is connected to the pushing device, and the second fixing portion is matched with the second mounting hole.
9. A method for constructing a protective device for external walls according to any one of claims 1 to 8, comprising the steps of:
carrying out concrete reinforcement on a wall foundation to form a reinforced beam, wherein the reinforced beam is provided with a sliding groove;
erecting a frame on the reinforcing beam, and installing the frame in the sliding groove;
fixedly connecting one end of the jacking component with the frame;
according to a drawing, limiting devices are arranged on the inner side and the outer side of the outer wall, and the limiting devices are detachably connected with the other end of the jacking component;
and electrically connecting the other end of the jacking component with a control device.
10. The method for constructing a protective device for an exterior wall according to claim 9, further comprising, after the step of electrically connecting the other end of the jacking-extending assembly with the control device, the steps of:
a thruster is arranged between the frame and the reinforcing beam so that the protection device moves along the extension direction of the chute.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911305538.2A CN111042574A (en) | 2019-12-18 | 2019-12-18 | Protection device for outer wall and construction method thereof |
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| CN201911305538.2A CN111042574A (en) | 2019-12-18 | 2019-12-18 | Protection device for outer wall and construction method thereof |
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Application publication date: 20200421 |