CN112081248B - Roof integral lifting system and roof integral lifting method - Google Patents
Roof integral lifting system and roof integral lifting method Download PDFInfo
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- CN112081248B CN112081248B CN202010767673.5A CN202010767673A CN112081248B CN 112081248 B CN112081248 B CN 112081248B CN 202010767673 A CN202010767673 A CN 202010767673A CN 112081248 B CN112081248 B CN 112081248B
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/35—Extraordinary methods of construction, e.g. lift-slab, jack-block
- E04B1/3511—Lift-slab; characterised by a purely vertical lifting of floors or roofs or parts thereof
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/14—Conveying or assembling building elements
- E04G21/16—Tools or apparatus
- E04G21/162—Handles to carry construction blocks
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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
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/35—Extraordinary methods of construction, e.g. lift-slab, jack-block
- E04B2001/3588—Extraordinary methods of construction, e.g. lift-slab, jack-block using special lifting or handling devices, e.g. gantries, overhead conveying rails
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
The invention relates to an integral lifting system of a roof and an integral lifting method of the roof, the integral lifting system of the roof comprises a lifting device, a lifting device fixing platform and a roof beam reinforcing structure, wherein the circumferential edge of the roof beam reinforcing structure penetrates through the top of a wall body close to the roof and extends outwards to form an outward extending part, the outward extending part is also fixedly provided with a retaining edge for limiting the circumferential edge of the roof, the roof beam reinforcing structure inside the wall body is also provided with an inclined strut for supporting the inner surface of the roof, the inclined strut comprises a support rod and a support plate, the lifting device is a hydraulic lifting device and comprises a hydraulic cylinder and a lifting rope, and one end of the lifting rope is provided with a lifting hook; the system also comprises a computer control system; the baffle edge is also provided with lifting rings matched with the lifting hooks, the number of the lifting rings is the same as that of the lifting hooks, and the arrangement positions of the lifting rings correspond to the lifting hooks in the vertical direction up and down. The integral roof lifting system provided by the invention can be suitable for lifting a roof with lower structural strength, and has a wide application range.
Description
Technical Field
The invention relates to the field of building construction, in particular to an integral roof lifting system and an integral roof lifting method.
Background
With the increase of population, the residential area becomes more and more scarce, and the living space of people becomes smaller and smaller. Therefore, in order to increase living space, people often adopt the original house to be dismantled and rebuilt so as to fully utilize the land area. However, for older houses of a long age and other houses of particular interest, it is often desirable to retain the original house without any intention to damage it. Therefore, it is necessary to perform an extension on the original house, such as adding a cover to the house. The house is expanded by integrally lifting a house cover of the house and then covering the house cover on the basis of the rest wall. The existing house lifting and expanding equipment is usually used for expanding some steel structure plants, when the equipment lifts the steel structure plants, a lifter is directly connected with a roof of the plant to lift, and the lifting process is rough. When the equipment is used for lifting some houses with fragile structures, the houses are fragile, so that damage is easy to occur in the construction process.
The above prior art solutions have the drawback that the apparatus is not suitable for lifting roof having fragile structure.
Disclosure of Invention
In view of the above technical problems, an object of the present invention is to provide an integral roof lifting system, which can enhance the structural strength of a roof when the integral roof is lifted, stably and safely lift the roof, and is suitable for not only a roof with high structural strength but also a roof with low structural strength, and has a wide application range; the invention also aims to provide a method for lifting the whole roof, which can safely and stably lift the whole roof and has wide application range.
The above object of the present invention is achieved by the following technical solutions:
a roof integral lifting system comprises a lifting device, a lifting device fixing platform and a roof beam reinforcing structure, wherein the roof beam reinforcing structure is arranged below a roof beam to support the roof beam, the circumferential edge of the roof beam reinforcing structure penetrates through the top of a wall body close to a roof and extends outwards to form an outward extension part, a blocking edge used for limiting the circumferential edge of the roof is further fixedly arranged on the outward extension part, and the blocking edge is an upwards convex bulge extending along the circumferential edge of the roof; the house beam reinforcing structure in the wall body is also provided with an inclined strut for supporting the inner surface of the house cover, the inclined strut comprises a supporting rod and a supporting plate, one surface of the supporting plate is fixedly connected with the supporting rod, and the other surface of the supporting plate is attached and fixedly connected with the inner surface of the house cover; the lifting device is a hydraulic lifting device, the hydraulic lifting device comprises a hydraulic cylinder and a lifting rope, and one end of the lifting rope is provided with a lifting hook; the lifting device fixing platforms are at least three and are uniformly arranged at intervals in the circumferential direction of the roof, each lifting device fixing platform is fixed with a lifting device, and the overall roof lifting system further comprises a computer control system for controlling each lifting device to work; the baffle edge is also provided with lifting rings matched with the lifting hooks, the number of the lifting rings is the same as that of the lifting hooks, and the arrangement positions of the lifting rings correspond to the lifting hooks in the vertical direction up and down.
By adopting the technical scheme, the integral roof lifting system provided by the invention reinforces the whole house through the roof beam reinforcing structure, the blocking edge is arranged to prevent the roof from shaking, the lifting device is connected with the roof beam reinforcing structure to indirectly lift the roof, and the computer control system is adopted to control the synchronous lifting of each lifting device, so that the roof is stable and safe in the lifting process, the integral roof lifting system can be suitable for lifting the roof with smaller structural strength, and the application range of the integral roof lifting system is wide.
The invention may further be configured in a preferred example, that the lifting device fixing platform comprises a support pillar arranged at the periphery of the house and a fixing seat arranged at the top end of the support pillar, and the lifting device is fixed on the fixing seat.
Through adopting above-mentioned technical scheme, it is firm to fix hoisting device.
In a preferred example, the support column may be further provided with a first guide structure extending in a vertical direction, and the blocking edge is further provided with a second guide structure in guiding movable cooperation with the first guide structure.
Through adopting above-mentioned technical scheme for the room lid can not take place to rock at the promotion in-process, and then strengthens the stability of promotion.
The invention may further be configured in a preferred example, wherein the first guiding structure is a U-shaped guiding chute, and the second guiding structure is a guiding slide block matched with the U-shaped guiding chute.
In a preferred example of the present invention, the house beam reinforcing structure may further include a U-shaped docking slot having a downward opening, the opening of the U-shaped docking slot corresponds to the wall up and down, and the U-shaped docking slot extends along the circumferential direction of the wall.
Through adopting above-mentioned technical scheme, can make things convenient for the later stage with the wall butt joint of the building of roof and below new construction, improve the efficiency of construction.
The invention may in a preferred example be further configured such that the beam reinforcement comprises a number of component modules, each component module being welded or bolted to form the beam reinforcement.
Through adopting above-mentioned technical scheme, can make in advance each component module, and convenient transportation, only need when the construction with each component module splice can, can improve the efficiency of construction.
A roof integral lifting method comprises the following steps:
the method comprises the following steps that firstly, the inside and the outside of a roof to be lifted are checked, whether a cracking position exists or not is checked, and steel hoop reinforcement is carried out on the cracking position;
measuring the internal and external dimension data of the roof, and establishing a roof model through a computer;
thirdly, designing a roof beam reinforcing structure according to the roof model; the roof beam reinforcing structure is arranged below the roof beam to support the roof beam, the circumferential edge of the roof beam reinforcing structure penetrates through the top of the wall body and is close to the roof and extends outwards to form an extended part, a blocking edge used for limiting the circumferential edge of the roof is further fixedly arranged on the extended part, and the blocking edge is an upwards protruding bulge extending along the circumferential edge of the roof; the house beam reinforcing structure in the wall body is also provided with an inclined strut for supporting the inner surface of the house cover, the inclined strut comprises a supporting rod and a supporting plate, one surface of the supporting plate is fixedly connected with the supporting rod, and the other surface of the supporting plate is attached and fixedly connected with the inner surface of the house cover;
decomposing the room beam reinforcing structure into smaller constituent modules on a computer, and manufacturing corresponding constituent modules according to data of the constituent modules;
step five, arranging a lifting device fixing platform on the periphery of the roof and installing a lifting device on the lifting device fixing platform; the lifting device fixing platforms are at least three and are uniformly arranged at intervals in the circumferential direction of the roof, each lifting device fixing platform is fixed with a lifting device, and each lifting device is controlled by a computer control system to be lifted synchronously;
step six, correspondingly arranging the component modules at corresponding parts of the roof, and connecting or welding and fixing the component modules into a whole through bolts to reinforce the roof;
and seventhly, pre-lifting the roof through the lifting device, cutting off the joint of the roof and the top of the wall body, and lifting the roof after cutting off.
By adopting the technical scheme, the integral lifting method of the roof can realize integral reinforcement of the roof, has good stability and safety in the lifting process of the roof, can be suitable for lifting the roof with smaller structural strength, has wide application range, can be conveniently transported by decomposing the reinforcing structure of the house beam into various component modules, is quick to splice during construction, improves the construction efficiency, and can improve the safety during cutting by pre-lifting the roof before cutting the roof and the wall.
The present invention may further be configured in a preferred example, in the fifth step, the lifting device fixing platform includes a supporting pillar disposed at the periphery of the house and a fixing seat disposed at the top end of the supporting pillar, and the lifting device is fixed on the fixing seat.
Through adopting above-mentioned technical scheme, it is firm to fix hoisting device.
In a preferred example, the support column may be further provided with a first guide structure extending in a vertical direction, and the blocking edge is further provided with a second guide structure in guiding movable cooperation with the first guide structure.
Through adopting above-mentioned technical scheme for the room lid can not take place to rock at the promotion in-process, and then strengthens the stability of promotion.
In a preferred example of the present invention, the house beam reinforcing structure may further include a U-shaped docking slot having a downward opening, the opening of the U-shaped docking slot corresponds to the wall up and down, and the U-shaped docking slot extends along the circumferential direction of the wall.
Through adopting above-mentioned technical scheme, can make things convenient for the later stage with the wall butt joint of the building of roof and below new construction, improve the efficiency of construction.
Drawings
Fig. 1 is a front view of an integral roof lifting system according to an embodiment of the present invention.
Fig. 2 is a top view of the roof lifting system of fig. 1.
In the figure, 1, a lifting device; 11. a hydraulic cylinder; 12. a lifting rope; 2. a lifting device fixing platform; 21. a support pillar; 22. a first guiding movement structure; 23. a fixed seat; 3. a house beam reinforcing structure; 31. an overhang; 32. a second guiding movement structure; 33. a hoisting ring; 34. blocking edges; 35. bracing; 351. a strut; 352. a support plate; 36. a U-shaped butt-joint clamping groove; 4. a wall body; 5. fixing the pile; 6. and (4) a roof.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1 and 2, the invention discloses an integral lifting system for a roof, which comprises a lifting device 1, a lifting device fixing platform 2 and a roof beam reinforcing structure 3. The room beam reinforcing structure 3 includes a plurality of component modules, and each component module is formed by welding or bolted connection the room beam reinforcing structure 3. The roof beam reinforcing structure 3 is arranged below the roof beam to support the roof beam, and the circumferential edge of the roof beam reinforcing structure 3 penetrates through the top of the wall body 4 close to the roof 6 and extends outwards to form an extension portion 31. Protruding portion 31 is further fixedly provided with a retaining edge 34 for limiting the circumferential edge of roof 6, and retaining edge 34 is an upward protruding protrusion extending along the circumferential edge of roof 6. The house beam reinforcing structure 3 in the wall 4 is also provided with an inclined strut 35 for supporting the inner surface of the roof 6, the inclined strut 35 comprises a supporting rod 351 and a supporting plate 352, one surface of the supporting plate 352 is fixedly connected with the supporting rod 351, and the other surface of the supporting plate 352 is attached to and fixedly connected with the inner surface of the roof 6.
With continued reference to fig. 1 and 2, the lifting device 1 is a hydraulic lifting device 1, the hydraulic lifting device 1 includes a hydraulic cylinder 11 and a lifting rope 12, and one end of the lifting rope 12 is provided with a lifting hook. In addition, the blocking edge 34 is also provided with hanging rings 33 which are used for being matched with the hanging hooks, the number of the hanging rings 33 is the same as that of the hanging hooks, and the arrangement position of each hanging ring 33 corresponds to the hanging hooks vertically. The lifting device fixing platform 2 is provided with 4 lifting device fixing platforms which are arranged at positions close to four corners outside the roof 6. Lifting device fixed platform 2 includes support column 21 and sets up at the fixing base 23 on support column 21 top, and lifting device 1 is fixed on fixing base 23. A fixing pile 5 is further arranged below the supporting column 21, and the supporting column 21 is fixed on the fixing pile 5. The supporting column 21 is further provided with a first guiding and moving structure 22 extending in the vertical direction, the blocking edge 34 is further provided with a second guiding and moving structure 32 matched with the first guiding and moving structure 22 in a guiding and moving mode, the first guiding and moving structure 22 is a U-shaped guiding sliding groove, and the second guiding and moving structure 32 is a guiding sliding block matched with the U-shaped guiding sliding groove. The arrangement of the guide structure enables the roof 6 not to shake in the lifting process, and the safety in lifting is enhanced. In addition, the house beam reinforcing structure 3 is further provided with a U-shaped butt joint clamping groove 36 with a downward opening, the opening position of the U-shaped butt joint clamping groove 36 corresponds to the upper portion and the lower portion of the wall body 4, and the U-shaped butt joint clamping groove 36 extends along the circumferential direction of the wall body 4. The U-shaped butt joint clamping groove 36 is arranged, so that the butt joint of the roof 6 and the wall of a newly built building below can be facilitated in the later period, and the construction efficiency is improved. The integral roof lifting system further comprises a computer control system for controlling the lifting devices 1 to work, and the computer control system accurately controls synchronous lifting of the lifting devices 1, so that the roof 6 is stressed more uniformly in the lifting process, and the stability is improved.
The implementation principle of the embodiment is as follows: according to the integral roof lifting system, the whole house is reinforced through the roof beam reinforcing structure 3, the blocking edge 34 is arranged to prevent the roof 6 from shaking, the lifting devices 1 are connected with the roof beam reinforcing structure 3 to indirectly lift the roof 6, and a computer control system is adopted to control synchronous lifting of the lifting devices 1, so that the roof 6 is stable and safe in the lifting process, the integral roof lifting system can be suitable for lifting the roof 6 with smaller structural strength, and the application range of the integral roof lifting system is wide.
The invention also discloses a roof integral lifting method which comprises the steps of firstly, checking the inside and the outside of the roof 6 to be lifted, checking whether a cracking part exists or not, and reinforcing the cracking part by using a steel hoop.
And step two, measuring the internal and external dimension data of the roof 6, and establishing a model of the roof 6 through a computer.
Thirdly, designing a house beam reinforcing structure 3 according to the roof 6 model; the house beam reinforcing structure 3 is arranged below the house beam to support the house beam, the circumferential edge of the house beam reinforcing structure 3 penetrates through the top of the wall 4 close to the roof 6 and extends outwards to form an extended part 31, a blocking edge 34 used for limiting the circumferential edge of the roof 6 is further fixedly arranged on the extended part 31, and the blocking edge 34 is an upwards protruding bulge extending along the circumferential edge of the roof 6; the house beam reinforcing structure 3 in the wall 4 is also provided with an inclined strut 35 for supporting the inner surface of the roof 6, the inclined strut 35 comprises a supporting rod 351 and a supporting plate 352, one surface of the supporting plate 352 is fixedly connected with the supporting rod 351, and the other surface of the supporting plate 352 is attached to and fixedly connected with the inner surface of the roof 6. The house beam reinforcing structure 3 is further provided with a U-shaped butt joint clamping groove 36 with a downward opening, the opening position of the U-shaped butt joint clamping groove 36 corresponds to the wall 4 up and down, and the U-shaped butt joint clamping groove 36 extends along the circumferential direction of the wall 4.
And fourthly, decomposing the room beam reinforcing structure 3 into smaller constituent modules on the computer, and manufacturing corresponding constituent modules according to the data of the constituent modules.
Step five, arranging a lifting device fixing platform 2 at the periphery of the roof 6 and installing a lifting device 1 on the lifting device fixing platform 2; the lifting device fixing platforms 2 are provided with 4 lifting devices 1 and are arranged at positions close to four corners outside the roof 6, and the lifting devices 1 are fixed on the lifting device fixing platforms 2 and are controlled to be lifted synchronously by a computer control system. Lifting device fixed platform 2 is including setting up in the support column 21 of house periphery and setting at the fixing base 23 on support column 21 top, and lifting device 1 fixes on fixing base 23. The supporting column 21 is further provided with a first guiding and moving structure 22 extending in the vertical direction, the blocking edge 34 is further provided with a second guiding and moving structure 32 matched with the first guiding and moving structure 22 in a guiding and moving mode, the first guiding and moving structure 22 is a U-shaped guiding sliding groove, and the second guiding and moving structure 32 is a guiding sliding block matched with the U-shaped guiding sliding groove.
And step six, correspondingly arranging the component modules at corresponding parts of the roof 6, and fixing the component modules into a whole by bolt connection or welding to reinforce the roof 6.
And seventhly, pre-lifting the roof 6 through the lifting device 1, cutting off the joint of the roof 6 and the top of the wall 4, and lifting the roof 6 after cutting off. The pre-lifting is to connect the lifting device 1 with the fixed structure of the house beam, so that the lifting rope 12 is in a tight state, but not lifted, and the purpose of the pre-lifting is to enhance the stability when the roof 6 is separated from the wall 4.
The implementation principle of the embodiment is as follows: the integral lifting method of the roof can realize integral reinforcement of the roof 6, the lifting device 1 is connected with the roof beam reinforcing structure 3 to indirectly lift the roof 6, the stability and the safety are good in the lifting process of the roof 6, the integral lifting system can be suitable for lifting the roof 6 with smaller structural strength, the application range of the integral lifting system of the roof is wide, the roof beam reinforcing structure 3 is decomposed into all the component modules to facilitate transportation, the splicing is fast during construction, the construction efficiency is improved, and in addition, the safety during cutting can be improved by pre-lifting the roof 6 before cutting the roof 6 and the wall 4.
The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (3)
1. A roof integral lifting method is characterized in that: the method comprises the following steps of firstly, inspecting the inside and the outside of a roof (6) to be lifted, checking whether a cracking part exists or not, and reinforcing a steel hoop at the cracking part;
measuring the internal and external dimension data of the roof (6), and establishing a model of the roof (6) through a computer;
thirdly, designing a house beam reinforcing structure (3) according to the house roof (6) model; the house beam reinforcing structure (3) is arranged below the house beam to support the house beam, the circumferential edge of the house beam reinforcing structure (3) penetrates through the top of the wall body (4) and is close to the roof (6) and extends outwards to form an outward extension part (31), a blocking edge (34) used for limiting the circumferential edge of the roof (6) is further fixedly arranged on the outward extension part (31), and the blocking edge (34) is an upwards protruding bulge extending along the circumferential edge of the roof (6); the house beam reinforcing structure (3) in the wall body (4) is also provided with an inclined strut (35) used for supporting the inner surface of the house cover (6), the inclined strut (35) comprises a supporting rod (351) and a supporting plate (352), one surface of the supporting plate (352) is fixedly connected with the supporting rod (351), and the other surface of the supporting plate (352) is attached and fixedly connected with the inner surface of the house cover (6);
decomposing the room beam reinforcing structure (3) into smaller constituent modules on a computer, and manufacturing corresponding constituent modules according to data of the constituent modules;
fifthly, arranging a lifting device fixing platform (2) on the periphery of the roof (6) and installing a lifting device (1) on the lifting device fixing platform (2); the fixed platforms of the lifting devices (1) are provided with at least three lifting devices (1) which are uniformly arranged at intervals in the circumferential direction of the roof (6), each lifting device fixed platform (2) is fixed with a lifting device (1), and each lifting device (1) is controlled to be lifted synchronously by a computer control system;
step six, correspondingly arranging the component modules at corresponding positions of the roof (6), and fixing the component modules into a whole by bolt connection or welding to reinforce the roof (6);
seventhly, pre-lifting the roof (6) through the lifting device (1), cutting off the joint of the roof (6) and the top of the wall body (4), and lifting the roof (6) after cutting off;
still be provided with U-shaped butt joint draw-in groove (36) that open side down on room roof beam reinforced structure (3), the open position and wall body (4) of U-shaped butt joint draw-in groove (36) correspond from top to bottom, and U-shaped butt joint draw-in groove (36) extend along wall body (4) circumference.
2. The roof overall lifting method according to claim 1, wherein: and the lifting device fixing platform (2) in the fifth step comprises a supporting column (21) arranged on the periphery of the house and a fixing seat (23) arranged at the top end of the supporting column (21), and the lifting device (1) is fixed on the fixing seat (23).
3. The roof overall lifting method according to claim 2, characterized in that: the support column (21) is further provided with a first guiding and moving structure (22) extending in the vertical direction, and the blocking edge (34) is further provided with a second guiding and moving structure (32) matched with the first guiding and moving structure (22) in a guiding and moving mode.
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| CN202010767673.5A CN112081248B (en) | 2020-08-03 | 2020-08-03 | Roof integral lifting system and roof integral lifting method |
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| CN202010767673.5A CN112081248B (en) | 2020-08-03 | 2020-08-03 | Roof integral lifting system and roof integral lifting method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| RU2116417C1 (en) * | 1997-05-06 | 1998-07-27 | Санкт-Петербургский государственный архитектурно-строительный университет | Method of adding stories to buildings at reconstruction |
| CN1948669A (en) * | 2005-10-13 | 2007-04-18 | 祝应红 | Method of lifting whole house |
| KR100939911B1 (en) * | 2008-02-27 | 2010-02-03 | 임영식 | An apartment house remodeling method |
| CN102277980B (en) * | 2011-05-06 | 2013-01-02 | 河海大学 | Device for integrally jacking roof of single-layer industrial factory building and construction method thereof |
| CN102936968B (en) * | 2012-11-15 | 2015-06-03 | 北京筑福国际工程技术有限责任公司 | Construction method of inner steel frame reinforced structure of pseudo-classic architecture |
| CN204174744U (en) * | 2014-11-03 | 2015-02-25 | 马铭超 | Elevating platform |
| CN105064697A (en) * | 2015-07-15 | 2015-11-18 | 安徽跨宇钢结构网架工程有限公司 | Roof grid elevating method |
| CN209653458U (en) * | 2019-01-18 | 2019-11-19 | 央固工程科技（上海）有限公司 | The reinforcing of existing workshop roof truss and Saussurea DC integral structure |
| CN110409860A (en) * | 2019-07-26 | 2019-11-05 | 中城科泽工程设计有限责任公司 | A kind of reconstruction structure and its remodeling method in old house |
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