CN111519767A - Integral lifting reverse construction system and method for multi-channel connected truss - Google Patents
Integral lifting reverse construction system and method for multi-channel connected truss Download PDFInfo
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- CN111519767A CN111519767A CN202010395044.4A CN202010395044A CN111519767A CN 111519767 A CN111519767 A CN 111519767A CN 202010395044 A CN202010395044 A CN 202010395044A CN 111519767 A CN111519767 A CN 111519767A
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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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/04—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack
- B66C13/08—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack for depositing loads in desired attitudes or positions
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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
- E04G21/161—Handling units comprising at least considerable parts of two sides of a room or like enclosed space
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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
- 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
- E04B2001/3577—Extraordinary methods of construction, e.g. lift-slab, jack-block prefabricating a building and moving it as a whole to the erection site
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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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- Architecture (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
The invention provides a multi-channel conjoined truss integral lifting reverse construction system and a method, which adopt vertical guide rails, sliding blocks, lifting mechanisms, steel strands and top trusses, wherein the vertical guide rails are respectively arranged on the opposite sides of adjacent building structures along lifting routes, the tops of two adjacent building structures are respectively provided with a top truss, the top trusses are respectively provided with a lifting mechanism, the lifting mechanisms are connected with the corresponding ends of the tops of the multi-channel conjoined trusses through the steel strands, the two sides of the multi-channel conjoined trusses are respectively provided with the sliding blocks matched with the corresponding vertical guide rails, the multi-channel conjoined trusses are assembled on the ground in advance, the safety risk of overhead welding assembly is reduced, the accurate positioning between galleries inside the multi-channel conjoined trusses is improved, the multi-channel conjoined trusses vertically move upwards along the vertical guide rails, the multi-channel conjoined trusses are prevented from generating horizontal displacement in the lifting process, and the accurate connection of the, effectively improve the installation quality and reasonably shorten the construction period.
Description
Technical Field
The invention relates to the technical field of steel structure installation, in particular to a multi-channel conjoined truss integral lifting reverse construction system and a method.
Background
At present, a multi-channel conjoined steel truss construction process is that a formwork support frame of an assembly construction floor is firstly erected, and then hoisting, positioning, welding and assembling of each component to final forming are carried out on the assembly construction floor by using construction site hoisting equipment.
Disclosure of Invention
In order to overcome the practical problems and disadvantages in the prior art, the invention provides a multi-channel connected truss overall lifting reverse construction system and method.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a multi-channel conjoined truss integral lifting reverse construction system is used for integrally lifting and installing a plurality of conjoined trusses assembled in advance on the ground between two adjacent building structures to form a corridor of each floor, and comprises a vertical guide rail, a sliding block, a lifting mechanism, a steel strand and a top truss, vertical guide rails are respectively arranged on the opposite sides of the adjacent building structures along the lifting route, the top of each of the two adjacent building structures is provided with a top truss, the top trusses are respectively provided with the lifting mechanisms, the lifting mechanisms are connected with the corresponding ends of the tops of the plurality of connected trusses through steel strands, the two sides of the multiple connected trusses are respectively provided with a sliding block matched with the corresponding vertical guide rail, and the multiple connected trusses can move up and down along the vertical guide rails on the two sides under the action of the lifting mechanism and can be installed at the appointed height position of the two adjacent building structures.
Preferably, in the above-mentioned multi-connected truss integral lifting reverse construction system, the lifting mechanism includes a lifter, a lifting column, a transverse lifting beam, a weight block and an anchor ear, the weight block is fixed on the upper chord of the top truss through the anchor ear, the lifting column is vertically arranged on the anchor ear at the upper side of the top of the weight block, the joint of the lifting column and the anchor ear is close to the outer side end of the weight block, one end of the transverse lifting beam is fixedly connected to the top of the lifting column, the other end of the transverse lifting beam is overhung outwards and arranged on the lifter, and the lifter lifts the multi-connected truss through a steel strand.
Preferably, in the above-mentioned multi-connected truss integral lifting top-down construction system, the lifting support further includes a first inclined strut, a second inclined strut, and a third inclined strut, one end of the first inclined strut is fixedly connected to the other end of the transverse lifting beam, the other end of the first inclined strut is mounted at the lower end of the lifting column, one end of the second inclined strut is fixedly connected to one end of the transverse lifting beam, the other end of the second inclined strut is mounted at the side of the top of the weight block, which is far away from the lifter, one end of the third inclined strut is fixedly connected to the other end of the transverse lifting beam, and the other end of the third inclined strut is mounted on the weight block.
Preferably, in the above-mentioned integral lifting top-down construction system for the multi-channel connected trusses, the multi-channel connected trusses include a roof truss and a plurality of single-layer corridor trusses, and the plurality of single-layer corridor trusses are sequentially arranged below the roof truss at intervals through two pairs of vertical pull rods.
Preferably, in the above-mentioned multi-connected truss integral lifting top-down construction system, a pair of the vertical guide rails is respectively disposed on opposite sides of the building structure.
The invention also discloses a multi-channel connected truss integral lifting reverse construction method, which adopts a multi-channel connected truss integral lifting reverse construction system for lifting and installing a multi-channel connected truss between two adjacent building structures, wherein the multi-channel connected truss integral lifting reverse construction system comprises vertical guide rails, sliding blocks, lifting mechanisms, steel strands and top trusses, the vertical guide rails are respectively arranged on the opposite sides of the adjacent building structures along lifting routes, the top of the two adjacent building structures is respectively provided with one top truss, the lifting mechanisms are respectively arranged on the top trusses, the lifting mechanisms are connected with the corresponding ends of the tops of the multi-channel connected trusses through the steel strands, the sliding blocks matched with the corresponding vertical guide rails are respectively arranged on the two sides of the multi-channel connected trusses, the multi-channel connected trusses comprise a roof truss and a plurality of single-layer corridor trusses, the plurality of single-layer corridor trusses are sequentially arranged below the roof truss at intervals through two pairs of vertical pull rods, and the construction method comprises the following steps:
step one, paying off at a construction site to carry out integral assembly on a plurality of connected trusses;
secondly, temporarily reinforcing the adjacent building structures by considering the load of the lifted multi-channel connected truss in the ascending operation through counter-force calculation;
determining the number and the positions of lifting points of a plurality of conjoined trusses according to the actual condition of the engineering, respectively arranging top trusses on adjacent building structures, respectively arranging lifting mechanisms on the top trusses, lifting the plurality of conjoined trusses by a lifter through steel strands, arranging a pair of vertical guide rails on opposite faces of the adjacent building structures along a lifting route, and arranging slide blocks matched with the corresponding vertical guide rails on two sides of the integrally assembled plurality of conjoined trusses;
driving a plurality of connected trusses to stably ascend along the vertical guide rail by the lifting mechanism;
and fifthly, after the plurality of connected trusses are lifted to the design position, connecting the roof trusses of the plurality of connected trusses with the top trusses by using high-strength bolts, and connecting the single-layer gallery trusses of the plurality of connected trusses with the corresponding floors of the building structure.
Preferably, in the above-mentioned multi-connected truss integral lifting reverse construction method, the lifting mechanism includes a lifter, a lifting column, a transverse lifting beam, a weight block and an anchor ear, the weight block is fixed on the upper chord of the top truss through the anchor ear, the lifting column is vertically arranged on the anchor ear at the upper side of the top of the weight block, a joint of the lifting column and the anchor ear is close to an outer end of the weight block, one end of the transverse lifting beam is fixedly connected to the top of the lifting column, the other end of the transverse lifting beam is cantilevered outwards and provided with the lifter, and the lifter lifts the multi-connected truss through a steel strand.
Preferably, in the above-mentioned multi-connected truss integral lifting reverse construction method, the lifting support further includes a first inclined strut, a second inclined strut, and a third inclined strut, one end of the first inclined strut is fixedly connected to the other end of the transverse lifting beam, the other end of the first inclined strut is mounted at the lower end of the lifting column, one end of the second inclined strut is fixedly connected to one end of the transverse lifting beam, the other end of the second inclined strut is mounted on the side of the top of the weight block, which is far away from the lifter, one end of the third inclined strut is fixedly connected to the other end of the transverse lifting beam, and the other end of the third inclined strut is mounted on the weight block.
Preferably, in the above-mentioned multi-connected truss integral lifting reverse construction method, the lifting support further includes a first inclined strut, a second inclined strut, and a third inclined strut, one end of the first inclined strut is fixedly connected to the other end of the transverse lifting beam, the other end of the first inclined strut is mounted at the lower end of the lifting column, one end of the second inclined strut is fixedly connected to one end of the transverse lifting beam, the other end of the second inclined strut is mounted on the side of the top of the weight block, which is far away from the lifter, one end of the third inclined strut is fixedly connected to the other end of the transverse lifting beam, and the other end of the third inclined strut is mounted on the weight block.
Preferably, in the above-mentioned integral lifting reverse construction method for the multi-channel connected truss, a pair of vertical plates is arranged on the upper chord of the roof truss, a horizontal plate is fixedly arranged at the top of the pair of vertical plates, and a through hole serving as a hanging point on the multi-channel connected truss is arranged in the middle of the horizontal plate.
Compared with the prior art, the invention has the beneficial technical effects that:
the invention provides an integral lifting top-down construction system of a multi-channel conjoined truss, which adopts vertical guide rails, sliding blocks, lifting mechanisms, steel strands and top trusses, wherein the vertical guide rails are respectively arranged on the opposite sides of adjacent building structures along lifting routes, the top of two adjacent building structures is respectively provided with one top truss, the lifting mechanisms are respectively arranged on the top trusses, the lifting mechanisms are connected with the corresponding ends of the tops of the multi-channel conjoined trusses through the steel strands, the sliding blocks matched with the corresponding vertical guide rails are respectively arranged on the two sides of the multi-channel conjoined trusses, the multi-channel conjoined trusses are integrally hoisted after being assembled on the ground in advance, the safety risk of overhead welding and assembling is reduced, the accurate positioning between inner galleries of the multi-channel conjoined trusses is improved, and the assembled multi-channel conjoined trusses can move up and down along the vertical guide rails on the two sides under the action of the lifting mechanisms and can be arranged on The vestibule of each floor, because the vertical upwards operation of vertical guide rail is followed to multichannel disjunctor truss, avoid promoting in-process multichannel disjunctor truss and produce horizontal displacement, realized multichannel disjunctor truss and the accurate connection of double-phase adjacent building structure, effectively improve the installation quality, rationally shorten construction period.
The invention provides an integral lifting reverse construction method of a multi-channel connected truss, which is characterized in that the multi-channel connected truss is integrally assembled by paying off at a construction site, the multi-channel connected truss comprises a roof truss and a plurality of single-layer corridor trusses, and the plurality of single-layer corridor trusses are sequentially arranged below the roof truss at intervals through two pairs of vertical pull rods, so that the safety risk of overhead welding and assembling is reduced, and the accurate positioning between single-layer corridors in the multi-channel connected truss is improved; by means of reaction force calculation, the load of the lifted multi-channel connected truss in the ascending operation is fully considered, and the adjacent building structure is temporarily reinforced; determining the number and the positions of lifting points of a plurality of conjoined trusses according to the actual conditions of engineering, respectively arranging top trusses above adjacent building structures, respectively arranging lifting mechanisms on the top trusses, and lifting the plurality of conjoined trusses by using a lifter through steel strands; set up a pair of vertical guide rail along the lifting path at adjacent building structure opposite face, make multichannel disjunctor truss go upward along vertical guide rail is stable, reach the purpose of controlling its horizontal displacement, avoid promoting in-process multichannel disjunctor truss and produce horizontal displacement, realized multichannel disjunctor truss and double-phase adjacent building structure's accurate being connected, effectively improve the installation accuracy of multichannel disjunctor truss, rationally shorten construction period.
Drawings
FIG. 1 is a schematic structural diagram of an integral lifting reverse construction system with a plurality of connected trusses according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a multi-channel connected truss according to an embodiment of the invention;
FIG. 3 is a schematic structural diagram of a lifting mechanism according to an embodiment of the present invention;
FIG. 4 is a schematic view of a plurality of hanging holes of the connected truss according to an embodiment of the invention;
in the figure, 1-building structure, 2-vertical guide rail, 3-sliding block, 4-lifting mechanism, 41-lifter, 42-lifting upright post, 43-horizontal lifting beam, 44-weight block, 45-anchor ear, 46-first inclined strut, 47-second inclined strut, 48-third inclined strut, 5-steel strand, 6-top truss, 7-multi-channel connected truss, 71-roof truss, 72-single-layer corridor truss, 73-vertical pull rod, 721-upper chord, 8-vertical plate, 9-horizontal plate and 10-lifting hole.
Detailed Description
The construction method of the multi-channel connected truss integral lifting reverse construction provided by the invention is further described in detail with reference to the accompanying drawings and specific embodiments. The advantages and features of the present invention will become more apparent from the following description. The technical contents and features of the present invention will be described in detail below with reference to the embodiments illustrated in the accompanying drawings. It is further noted that the drawings are in greatly simplified form and are not to precise scale, merely for the purpose of facilitating and distinctly claiming the embodiments of the present invention. For convenience of description, the directions of "up" and "down" described below are the same as the directions of "up" and "down" in the drawings, but this is not a limitation of the technical solution of the present invention.
Referring to fig. 1 to 4, the embodiment provides an integral lifting reverse construction system for multiple connected trusses, which is used for integrally lifting and installing multiple connected trusses 7 pre-assembled on the ground between two adjacent building structures 1 to form a corridor of each floor, and includes vertical guide rails 2, sliders 3, lifting mechanisms 4, steel strands 5 and top trusses 6, wherein the vertical guide rails 2 are respectively arranged on opposite sides of the adjacent building structures 1 along lifting routes, the top trusses 6 are respectively arranged on the tops of the two adjacent building structures 1, the lifting mechanisms 4 are respectively arranged on the top trusses 6, the lifting mechanisms 4 are connected with corresponding ends of the tops of the multiple connected trusses 7 through the steel strands 5, the sliders 3 matched with the corresponding vertical guide rails 2 are respectively arranged on two sides of the multiple connected trusses 7, and the multiple connected trusses 7 can move up and down along the vertical guide rails 2 on the two sides under the action of the lifting mechanisms 4 and can be installed on the two adjacent building structures 1 At a given height position of the building structure 1.
The invention provides an integral lifting top-down construction system of a multi-channel connected truss, which adopts vertical guide rails 2, sliding blocks 3, lifting mechanisms 4, steel strands 5 and top trusses 6, wherein the vertical guide rails 2 are respectively arranged on opposite sides of adjacent building structures 1 along lifting routes, the top of two adjacent building structures 1 is respectively provided with one top truss 6, the top trusses 6 are respectively provided with one lifting mechanism 4, the lifting mechanisms 4 are connected with corresponding ends of the tops of the multi-channel connected trusses 7 through the steel strands 5, the two sides of each multi-channel connected truss 7 are respectively provided with the sliding blocks 3 matched with the corresponding vertical guide rails 2, the multi-channel connected trusses 7 are assembled on the ground in advance and then integrally hoisted, the safety risk of air welding and assembling is reduced, the accurate positioning between galleries inside the multi-channel connected trusses 7 is improved, and the assembled multi-channel connected trusses 7 can move up and down along the vertical guide rails 2 on the two sides under the action of the Enough install in the vestibule that forms each floor on the appointed high position of double-phase adjacent building structure 1, because multichannel disjunctor truss 7 is along the vertical upwards operation of vertical guide rail 2, avoid promoting in-process multichannel disjunctor truss 7 and produce horizontal displacement, realized multichannel disjunctor truss 7 and double-phase adjacent building structure 1's accurate being connected, effectively improve multichannel disjunctor truss 7's installation accuracy, rationally shorten construction period.
Preferably, in the above-mentioned overall lifting reverse construction system for the multi-channel connected truss, the lifting mechanism 4 includes a lifter 41, a lifting column 42, a transverse lifting beam 43, a weight 44 and an anchor ear 45, the weight 44 is fixed on the upper chord 721 of the top truss 6 through the anchor ear 45, in order to realize the lifting construction for the multi-channel connected truss 7, the stability of the lifting mechanism 4 is improved, the lifting column 42 is vertically arranged on the anchor ear 45 on the upper side of the top of the weight 44, the joint of the lifting column 42 and the anchor ear 45 is close to the outer side end of the weight 44, one end of the transverse lifting beam 43 is fixedly connected to the top of the lifting column 42, the other end of the transverse lifting beam 43 is cantilevered outwards and provided with the lifter 41, and the lifter 41 lifts the multi-channel connected truss 7 through the steel strand 5.
Preferably, in the above-mentioned multi-connected truss integral lifting top-down construction system, the lifting support further includes a first inclined strut 46, a second inclined strut 47 and a third inclined strut 48, one end of the first inclined strut 46 is fixedly connected to the other end of the transverse lifting beam 43, the other end of the first inclined strut 46 is mounted at the lower end of the lifting column 42, one end of the second inclined strut 47 is fixedly connected to one end of the transverse lifting beam 43, the other end of the second inclined strut 47 is mounted at the side of the top of the weight block 44 far away from the lifter 41, one end of the third inclined strut 48 is fixedly connected to the other end of the transverse lifting beam 43, and the other end of the third inclined strut 48 is mounted on the weight block 44. By providing a first diagonal brace 46, a second diagonal brace 47 and a third diagonal brace 48, the stability of the hoisting mechanism 4 can be further increased.
Preferably, in the above-mentioned multi-connected truss integral lifting top-down construction system, the multi-connected truss 7 includes a roof truss 71 and a plurality of single-layer gallery trusses 72, the plurality of single-layer gallery trusses 72 are sequentially arranged below the roof truss 71 at intervals through two pairs of vertical pull rods 73, and each single-layer gallery truss 72 is used as a gallery structure of a floor for two building structures 1.
Preferably, in the above-mentioned multi-connected truss integral lifting reverse construction system, the pair of vertical guide rails 2 is respectively arranged on the opposite sides of the building structure 1, so that the multi-connected truss 7 can be stably lifted.
For stable connection between the steel strand 5 and the multiple connected trusses 7 and stable hoisting of the multiple connected trusses 7, preferably, in the above-mentioned multiple connected truss overall hoisting reverse construction system, a pair of vertical plates is arranged on the upper chord 721 of the roof truss 71, a horizontal plate 9 is fixedly arranged at the top of the pair of vertical plates 8, and a hoisting hole 10 serving as a hoisting point on the multiple connected trusses 7 is arranged in the middle of the horizontal plate 9.
Continuing to refer to fig. 1 to 4, the invention further discloses a multi-channel connected truss integral lifting reverse construction method, which adopts a multi-channel connected truss integral lifting reverse construction system for lifting and installing a multi-channel connected truss 7 between two adjacent building structures 1, wherein the multi-channel connected truss integral lifting reverse construction system comprises vertical guide rails 2, sliders 3, lifting mechanisms 4, steel strands 5 and top trusses 6, the vertical guide rails 2 are respectively arranged on the opposite sides of the adjacent building structures 1 along the lifting route, the top trusses 6 are respectively arranged on the tops of the two adjacent building structures 1, the lifting mechanisms 4 are respectively arranged on the top trusses 6, the lifting mechanisms 4 are connected with the corresponding ends of the tops of the multi-channel connected trusses 7 through the steel strands 5, the sliders 3 matched with the corresponding vertical guide rails 2 are respectively arranged on the two sides of the multi-channel connected trusses 7, the multi-channel connected truss 7 comprises a roof truss 71 and a plurality of single-layer corridor trusses 72, wherein the single-layer corridor trusses 72 are sequentially arranged below the roof truss 71 at intervals through two pairs of vertical pull rods, and the construction method comprises the following steps:
firstly, paying off at a construction site to integrally assemble a plurality of connected trusses 7;
secondly, temporarily reinforcing the adjacent building structures 1 by considering the load of the lifted multi-channel connected trusses 7 in the ascending operation through counter-force calculation;
determining the number and the positions of lifting points of a plurality of connected trusses 7 according to the actual conditions of the engineering, respectively arranging top trusses 6 on adjacent building structures 1, respectively arranging lifting mechanisms 4 on the top trusses 6, lifting the plurality of connected trusses 7 by a lifter 41 through steel strands 5, arranging a pair of vertical guide rails 2 on opposite faces of the adjacent building structures 1 along a lifting route, and arranging slide blocks 3 matched with the corresponding vertical guide rails 2 on two sides of the integrally assembled plurality of connected trusses 7;
step four, the lifting mechanism 4 drives the plurality of connected trusses 7 to stably ascend along the vertical guide rail 2;
and step five, after the plurality of connected trusses 7 are lifted to the design position, the roof truss 71 of the plurality of connected trusses 7 is connected with the top truss 6 through high-strength bolts, and each single-layer corridor truss 72 of the plurality of connected trusses 7 is connected with the corresponding floor of the building structure 1.
The invention provides a multi-channel connected truss integral lifting reverse construction method, wherein the multi-channel connected truss 7 is integrally assembled by paying off at a construction site, the multi-channel connected truss 7 comprises a roof truss 71 and a plurality of single-layer corridor trusses 72, and the single-layer corridor trusses 72 are sequentially arranged below the roof truss 71 at intervals through two pairs of vertical pull rods, so that the safety risk of overhead welding and assembling is reduced, and the accurate positioning between single-layer corridors in the multi-channel connected truss 7 is improved; by means of reaction force calculation, the load of the lifted multi-channel connected truss 7 in the ascending operation is fully considered, and the adjacent building structure 1 is temporarily reinforced; determining the number and the positions of lifting points of a plurality of connected trusses 7 according to the actual conditions of engineering, respectively arranging top trusses 6 above adjacent building structures 1, respectively arranging lifting mechanisms 4 on the top trusses 6, and lifting the plurality of connected trusses 7 by a lifter 41 through steel strands 5; set up a pair of vertical guide rail 2 along the lifting route at adjacent building structure 1 looks facade, make multichannel disjunctor truss 7 stably go upward along vertical guide rail 2, reach the purpose of controlling its horizontal displacement, avoid promoting in-process multichannel disjunctor truss 7 to produce horizontal displacement, realized multichannel disjunctor truss 7 and double-phase adjacent building structure 1's accurate connection, effectively improve multichannel disjunctor truss 7's installation accuracy, rationally shorten construction period
Preferably, in the above-mentioned multi-connected truss integral lifting top-down construction system, the lifting support further includes a first inclined strut 46, a second inclined strut 47 and a third inclined strut 48, one end of the first inclined strut 46 is fixedly connected to the other end of the transverse lifting beam 43, the other end of the first inclined strut 46 is mounted at the lower end of the lifting column 42, one end of the second inclined strut 47 is fixedly connected to one end of the transverse lifting beam 43, the other end of the second inclined strut 47 is mounted at the side of the top of the weight block 44 far away from the lifter 41, one end of the third inclined strut 48 is fixedly connected to the other end of the transverse lifting beam 43, and the other end of the third inclined strut 48 is mounted on the weight block 44. The lifting mechanism 4 can be further increased by providing a first sprag 46, a second sprag 47 and a third sprag 48. The stability of the lifting mechanism 4 can be further increased by providing the first inclined strut 46, the second inclined strut 47 and the third inclined strut 48 of the above structure
For the stable connection between the steel strand 5 and the multiple connected trusses 7 and the stable hoisting of the multiple connected trusses 7, preferably, in the above-mentioned multiple connected truss integral lifting reverse construction method, a pair of vertical plates is arranged on the upper chord 721 of the roof truss 71, a horizontal plate 9 is fixedly arranged at the top of the pair of vertical plates 8, and a hoisting hole 10 serving as a hoisting point on the multiple connected trusses 7 is arranged in the middle of the horizontal plate 9.
The above description is only for the purpose of describing the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention, and any variations and modifications made by those skilled in the art based on the above disclosure are within the scope of the appended claims.
Claims (10)
1. A multi-channel conjoined truss integral lifting reverse construction system is used for integrally lifting and installing a plurality of conjoined trusses assembled in advance on the ground between two adjacent building structures to form a corridor of each floor, it is characterized by comprising a vertical guide rail, a sliding block, a lifting mechanism, a steel strand and a top truss, vertical guide rails are respectively arranged on the opposite sides of the adjacent building structures along the lifting route, the top of each of the two adjacent building structures is provided with a top truss, the top trusses are respectively provided with the lifting mechanisms, the lifting mechanisms are connected with the corresponding ends of the tops of the plurality of connected trusses through steel strands, the two sides of the multiple connected trusses are respectively provided with a sliding block matched with the corresponding vertical guide rail, and the multiple connected trusses can move up and down along the vertical guide rails on the two sides under the action of the lifting mechanism and can be installed at the appointed height position of the two adjacent building structures.
2. The multi-channel connected truss integral lifting reverse construction system according to claim 1, wherein the lifting mechanism comprises a lifter, a lifting upright, a transverse lifting beam, a weight block and an anchor ear, the weight block is fixed on an upper chord of the top truss through the anchor ear, the lifting upright is vertically arranged on the anchor ear on the upper side of the top of the weight block, the joint of the lifting upright and the anchor ear is close to the outer side end of the weight block, one end of the transverse lifting beam is fixedly connected to the top of the lifting upright, the other end of the transverse lifting beam is cantilevered outwards and provided with the lifter, and the lifter lifts the multi-channel connected truss through a steel strand.
3. The multi-channel connected truss integral lifting reverse construction system according to claim 2, wherein the lifting support further comprises a first inclined support, a second inclined support and a third inclined support, one end of the first inclined support is fixedly connected with the other end of the transverse lifting beam, the other end of the first inclined support is installed at the lower end of the lifting upright column, one end of the second inclined support is fixedly connected with one end of the transverse lifting beam, the other end of the second inclined support is installed at the side, far away from the lifter, of the top of the weight block, one end of the third inclined support is fixedly connected with the other end of the transverse lifting beam, and the other end of the third inclined support is installed on the weight block.
4. The multi-channel connected truss integral lifting top-down construction system according to claim 1, wherein the multi-channel connected truss comprises a roof truss and a plurality of single-layer corridor trusses, and the single-layer corridor trusses are sequentially arranged below the roof truss at intervals through two pairs of vertical pull rods.
5. The multi-channel conjoined truss integrated lifting reverse construction system as claimed in claim 1, wherein a pair of the vertical guide rails is respectively provided at opposite sides of the building structure.
6. A multi-channel connected truss integral lifting reverse construction method is characterized in that a multi-channel connected truss integral lifting reverse construction system for lifting a plurality of connected trusses and installing the multi-channel connected trusses between two adjacent building structures is adopted, the multi-channel connected truss integral lifting reverse construction system comprises vertical guide rails, sliding blocks, lifting mechanisms, steel strands and top trusses, the vertical guide rails are respectively arranged on the opposite sides of the adjacent building structures along lifting routes, the top trusses are respectively arranged on the tops of the two adjacent building structures, the lifting mechanisms are respectively arranged on the top trusses, the lifting mechanisms are connected with the corresponding ends of the tops of the multi-channel connected trusses through the steel strands, the sliding blocks matched with the corresponding vertical guide rails are respectively arranged on the two sides of the multi-channel connected trusses, the multi-channel connected trusses comprise roof trusses and a plurality of single-layer corridor trusses, the plurality of single-layer corridor trusses are sequentially arranged below the roof truss at intervals through two pairs of vertical pull rods, and the construction method comprises the following steps:
step one, paying off at a construction site to carry out integral assembly on a plurality of connected trusses;
secondly, temporarily reinforcing the adjacent building structures by considering the load of the lifted multi-channel connected truss in the ascending operation through counter-force calculation;
determining the number and the positions of lifting points of a plurality of conjoined trusses according to the actual condition of the engineering, respectively arranging top trusses on adjacent building structures, respectively arranging lifting mechanisms on the top trusses, lifting the plurality of conjoined trusses by a lifter through steel strands, arranging a pair of vertical guide rails on opposite faces of the adjacent building structures along a lifting route, and arranging slide blocks matched with the corresponding vertical guide rails on two sides of the integrally assembled plurality of conjoined trusses;
driving a plurality of connected trusses to stably ascend along the vertical guide rail by the lifting mechanism;
and fifthly, after the plurality of connected trusses are lifted to the design position, connecting the roof trusses of the plurality of connected trusses with the top trusses by using high-strength bolts, and connecting the single-layer gallery trusses of the plurality of connected trusses with the corresponding floors of the building structure.
7. The multi-channel connected truss integral lifting reverse construction method according to claim 6, wherein the lifting mechanism comprises a lifter, a lifting upright, a transverse lifting beam, a weight block and an anchor ear, the weight block is fixed on an upper chord of the top truss through the anchor ear, the lifting upright is vertically arranged on the anchor ear on the upper side of the top of the weight block, the joint of the lifting upright and the anchor ear is close to the outer side end of the weight block, one end of the transverse lifting beam is fixedly connected to the top of the lifting upright, the other end of the transverse lifting beam is cantilevered outwards and provided with the lifter, and the lifter lifts the multi-channel connected truss through a steel strand.
8. The multi-channel conjoined truss integral lifting reverse construction method according to claim 7, wherein the lifting support further comprises a first inclined strut, a second inclined strut and a third inclined strut, one end of the first inclined strut is fixedly connected with the other end of the transverse lifting beam, the other end of the first inclined strut is installed at the lower end of the lifting upright column, one end of the second inclined strut is fixedly connected with one end of the transverse lifting beam, the other end of the second inclined strut is installed at the side, far away from the lifter, of the top of the weight block, one end of the third inclined strut is fixedly connected with the other end of the transverse lifting beam, and the other end of the third inclined strut is installed on the weight block.
9. The multi-channel conjoined truss integral lifting reverse construction method according to claim 7, wherein the lifting support further comprises a first inclined strut, a second inclined strut and a third inclined strut, one end of the first inclined strut is fixedly connected with the other end of the transverse lifting beam, the other end of the first inclined strut is installed at the lower end of the lifting upright column, one end of the second inclined strut is fixedly connected with one end of the transverse lifting beam, the other end of the second inclined strut is installed at the side, far away from the lifter, of the top of the weight block, one end of the third inclined strut is fixedly connected with the other end of the transverse lifting beam, and the other end of the third inclined strut is installed on the weight block.
10. The multi-channel connected truss integral lifting reverse construction method according to claim 6, wherein a pair of vertical plates are arranged on the upper chord of the roof truss, a horizontal plate is fixedly arranged at the top of the pair of vertical plates, and a through hole used as a lifting point on the multi-channel connected truss is arranged in the middle of the horizontal plate.
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| CN202010395044.4A CN111519767A (en) | 2020-05-12 | 2020-05-12 | Integral lifting reverse construction system and method for multi-channel connected truss |
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| CN202010395044.4A CN111519767A (en) | 2020-05-12 | 2020-05-12 | Integral lifting reverse construction system and method for multi-channel connected truss |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112252482A (en) * | 2020-12-07 | 2021-01-22 | 中铁建设集团华北工程有限公司 | Hydraulic lifting device for steel structure roof and construction method thereof |
| CN112897298A (en) * | 2021-01-13 | 2021-06-04 | 太原理工大学 | Lifting device |
| CN113136961A (en) * | 2021-03-25 | 2021-07-20 | 中国建筑第八工程局有限公司 | Lifting structure for large-span truss and lifting method thereof |
| CN113494127A (en) * | 2021-07-09 | 2021-10-12 | 上海宝冶集团有限公司 | Construction method for layered lifting of large-span open-web corridor steel platform |
| JP7436341B2 (en) | 2020-10-08 | 2024-02-21 | 株式会社巴コーポレーション | Structure lift-up method and its equipment configuration |
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2020
- 2020-05-12 CN CN202010395044.4A patent/CN111519767A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7436341B2 (en) | 2020-10-08 | 2024-02-21 | 株式会社巴コーポレーション | Structure lift-up method and its equipment configuration |
| CN112252482A (en) * | 2020-12-07 | 2021-01-22 | 中铁建设集团华北工程有限公司 | Hydraulic lifting device for steel structure roof and construction method thereof |
| CN112897298A (en) * | 2021-01-13 | 2021-06-04 | 太原理工大学 | Lifting device |
| CN113136961A (en) * | 2021-03-25 | 2021-07-20 | 中国建筑第八工程局有限公司 | Lifting structure for large-span truss and lifting method thereof |
| CN113494127A (en) * | 2021-07-09 | 2021-10-12 | 上海宝冶集团有限公司 | Construction method for layered lifting of large-span open-web corridor steel platform |
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