CN115538681B - BIM-based channel-containing multistage variable cross-section roof structure and construction method thereof - Google Patents
BIM-based channel-containing multistage variable cross-section roof structure and construction method thereof Download PDFInfo
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- CN115538681B CN115538681B CN202211230966.5A CN202211230966A CN115538681B CN 115538681 B CN115538681 B CN 115538681B CN 202211230966 A CN202211230966 A CN 202211230966A CN 115538681 B CN115538681 B CN 115538681B
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- 238000010276 construction Methods 0.000 title abstract description 18
- 238000005259 measurement Methods 0.000 claims description 45
- 229910000831 Steel Inorganic materials 0.000 claims description 20
- 239000010959 steel Substances 0.000 claims description 20
- 238000006073 displacement reaction Methods 0.000 claims description 16
- 230000000712 assembly Effects 0.000 claims description 6
- 238000000429 assembly Methods 0.000 claims description 6
- 238000011900 installation process Methods 0.000 claims description 6
- 230000001154 acute effect Effects 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000004886 process control Methods 0.000 claims description 3
- 230000003014 reinforcing effect Effects 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 2
- 230000001360 synchronised effect Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 claims 1
- 238000009434 installation Methods 0.000 abstract description 12
- 238000012360 testing method Methods 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- 239000000725 suspension Substances 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
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- 238000010586 diagram Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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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
- E04B7/00—Roofs; Roof construction with regard to insulation
- E04B7/02—Roofs; Roof construction with regard to insulation with plane sloping surfaces, e.g. saddle roofs
- E04B7/022—Roofs; Roof construction with regard to insulation with plane sloping surfaces, e.g. saddle roofs consisting of a plurality of parallel similar trusses or portal frames
- E04B7/024—Roofs; Roof construction with regard to insulation with plane sloping surfaces, e.g. saddle roofs consisting of a plurality of parallel similar trusses or portal frames the trusses or frames supporting load-bearing purlins, e.g. braced purlins
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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
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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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/25—Greenhouse technology, e.g. cooling systems therefor
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Joining Of Building Structures In Genera (AREA)
Abstract
The invention discloses a BIM-based channel-containing multistage variable cross-section roof structure and a construction method thereof, wherein the structure comprises under-house upright posts, roof components connected to the tops of the under-house upright posts, truss systems connected between the under-house upright posts and positioned below the roof components, and channel units connected below the truss systems. According to the invention, through the multistage arrangement of the positive return-word purlines and the arc return-word purlines, the roof structure is attractive, the expansion of the stressed area is facilitated, and the classification connection and different hoisting modes are facilitated, so that the convenience and the safety construction are facilitated; through the arrangement of the channel unit and the arrangement of the channel hanging column assembly and the channel hanging column connecting piece, the hanging connection of the channel main body and the truss system is ensured; the BIM software is used for deepening construction, so that the special-shaped roof assembly is accurately positioned in site construction, and positioning and installation of the channel units are facilitated; four-point checking can greatly ensure the installation precision and the testing level.
Description
Technical Field
The invention belongs to the technical field of steel structure roof construction, and particularly relates to a BIM-based channel-containing multi-stage variable cross-section roof structure and a construction method thereof.
Background
In the construction of steel structures, the roof structure at the top also presents a phenomenon of changeable patterns along with the change of the structure function. For conventional roofing, mostly square, rectangle, circular or set up to the slope, it is connected with the top beam column more, satisfies fixed and atress can. However, with the development of steel structures, the roof forms and structures are also changed greatly, and new challenges are presented for aesthetic appearance, supporting spans and space utilization, and especially when a channel for walking is arranged below the roof, new requirements are presented for connection with the roof structure and installation of the roof structure.
Disclosure of Invention
The invention provides a BIM-based channel-containing multistage variable cross-section roof structure and a construction method thereof, which are used for solving the technical problems of installation connection, support, fixation of channels below a roof and the like of a multistage variable cross-section roof.
In order to achieve the above purpose, the invention adopts the following technical scheme:
the BIM-based multi-stage variable cross-section roof structure with the channels comprises under-house upright posts, roof components connected to the tops of the under-house upright posts, truss systems connected between the under-house upright posts and positioned below the roof components, and channel units connected below the truss systems;
the roof assembly is gradually-expanded from top to bottom and is in multi-stage step-shaped distribution and comprises return purlines, inclined ridge purlines and inclined connecting purlines, wherein the return purlines are arranged in a grading manner; the inverted U-shaped purline comprises an upper inverted U-shaped purline and a lower arc-shaped inverted U-shaped purline; the inclined ridge purlines are connected to corners of the inverted U-shaped purlines, the two ends of the inclined ridge purlines are in a right-angle L shape in the long direction, the inclined connecting purlines are in an inclined U shape and are downward in opening, and the inclined connecting purlines are connected to corners of the arc-shaped inverted U-shaped purlines and the middle parts of the inclined connecting purlines are connected with the inclined ridge purlines in a penetrating manner;
BIM measurement and control points are arranged at the connection part of the inclined ridge purline and the return-word purline and at the connection part of the inclined connecting purline and the arc return-word purline; at least one BIM measurement and control point is arranged in the middle of the longitudinal direction and the short direction of the return purline;
the under-house upright post comprises an assembly-able connecting upright post body, a connecting and fixing plate arranged in the upright post body, a connecting lug plate connected with a splicing section of the top section upright post body and a post stiffening rib plate connected with the upright post body; the top section of the under-house upright post is detachably connected with the truss system, and the top section and the truss system are integrally connected and hoisted to the pre-installed under-house upright post;
the channel units are distributed in a grid mode and comprise a channel main body, an upper channel connecting beam arranged above the channel main body, a channel hanging column assembly connected between the upper channel connecting beam and the channel, a channel hanging column connecting piece connected between the channel hanging column assembly and the upper channel connecting beam and a top channel connecting piece connected between the upper channel connecting beam and the truss system;
the gridded channel units are arranged in a manner of extending out and extending through the roof assembly in the long direction, BIM measurement and control points are arranged at the splicing positions of the long-direction channel units and the short-direction channel units, and BIM measurement and control points are arranged at least in the middle of the long-direction channel units.
Further, the upright body is made of an H-shaped steel piece, connecting and fixing plates are connected to the same side of the H-shaped upright body at intervals, the bottom of the top section of each connecting and fixing plate is connected with an ear connecting plate, and the ear connecting plates are also arranged on the corresponding lower column body of the top section; welding connecting steel plates on two sides of the lug connecting plate to connect the upper and lower upright post bodies;
BIM measurement and control points, displacement sensors and stress sensors are arranged on the upper and lower lug connecting plates, wherein the BIM measurement and control points are arranged on the same vertical line.
Further, the arc-shaped character-returning purlines are arranged in groups, at least two character-returning purlines are arranged in one group, and the arc-shaped character-returning purlines are sequentially reduced from bottom to top; the length and the width of the straight-back character purline are smaller than those of the arc-shaped straight-back character purline and are sequentially smaller from bottom to top;
the inclined connecting purlines are integrally connected with the arc-shaped return purlines, and the inclined ridge purlines are spliced and connected with the positive return purlines.
Further, the channel main body comprises a channel bottom cross beam, a channel bottom longitudinal beam which is horizontally and vertically connected to the channel bottom cross beam, a channel upright post which is vertically and vertically connected to the bottom cross beam, and a channel guard bar which is connected to the top of the channel upright post;
the bottom longitudinal beam is connected to the outer side of the channel guard bar and correspondingly connected with the channel hanging connecting column assembly.
Further, the upper connecting beam of the channel comprises an upper connecting beam main body of the channel which is assembled and connected and an upper connecting beam Liang Lianban of the channel which is connected to the assembled part, the upper connecting beam main body of the channel is a tubular piece, the connecting Liang Lianban is a piece, and the connecting part extends into the upper connecting beam of the channel; and the upper connecting beams of the channels are provided with channel hanging connecting column assemblies at intervals along the length direction.
Further, the channel hanging column assembly comprises a channel hanging main column connected to the channel bottom longitudinal beam, a channel hanging plate connected between the channel bottom longitudinal beam and the channel hanging main column, and a channel hanging column hanging fastener arranged on the channel hanging main column;
the channel hanging column hanging fixture is a connecting plate which is detachably connected to the channel hanging main column and has an adjustable angle, and the connecting plate is connected with the channel hanging main column at an acute angle; the connecting plate is connected with the reinforcing rod corresponding to the lifting hook.
Further, the channel hanging column connecting piece comprises a channel hanging column connecting plate connected to the top of the channel hanging column connecting main column and channel hanging column connecting rib plates connected to the two long sides of the channel hanging column connecting plate, the channel hanging column connecting plate and the channel hanging column connecting rib plates are connected in an I shape, the channel hanging column connecting plate is fixedly connected with an upper channel connecting beam, and the channel hanging column connecting rib plates are connected between the channel hanging column connecting plate and the upper channel connecting beam.
Further, the upper beam connecting top connecting piece of the channel comprises upper beam connecting Liang Dinglian vertical plates connected to two sides of the upper beam of the channel, upper beam connecting transverse plates connected between the upper beam connecting Liang Dinglian vertical plates of the channel, and upper beam connecting rib plates connected to two sides of the upper beam connecting Liang Dinglian vertical plates of the channel and connected corresponding to the truss system;
an arc notch is formed in the top of the vertical plate connected with the Liang Dinglian channel, and the arc notch is arranged corresponding to the diameter of the truss system rod piece; the upper beam connecting top connecting transverse plate of the channel is arranged on the horizontal plane of the bottom of the arc-shaped notch and corresponds to the rod piece of the corresponding truss system.
Further, the truss system comprises truss bottom rods connected with the Liang Dinglian vertical plates on the corresponding channels, truss top rods parallel to the truss bottom rods and correspondingly connected to the lower parts of the inverted-U-shaped purlines, truss vertical rods and truss diagonal rods connected between the truss bottom rods and the truss top rods, truss vertical connecting rods connected between the truss diagonal rods and the inverted-U-shaped purlines, truss side connecting rods connected between adjacent truss rod pieces and truss connecting plates detachably connected between the truss rod pieces and the upright column bodies;
and BIM measurement and control points, a connection displacement sensor and a stress sensor are arranged at the joint of the truss bottom rod and the Liang Dinglian vertical plate on the channel.
Further, the construction method of the BIM-based channel-containing multistage variable cross-section roof structure comprises the following specific steps:
firstly, building a BIM model, and respectively deepening a positive return-word purline and an arc return-word purline in the return-word purline, wherein the positive return-word purlines are assembled, hoisted and connected, and the arc return-word purlines are integrally connected; calculating the stress of the structure at the integral roof, and then determining the distance, the model and the number of truss systems;
marking the point positions at the BIM measurement and control points in the model, and recording space coordinates together with square check points at the periphery of each point position;
constructing an under-house upright post at the lower part of the under-house upright post in advance, and then assembling a truss system at the top of the constructed floor and connecting the truss system with the under-house upright post at the top section; hoisting a truss system of the next truss, and simultaneously butting the top section and the lower section of the lower upright post of the house; respectively arranging BIM measurement and control points, connecting displacement sensors and stress sensors on the installed under-house upright posts and truss bottom rods, and synchronously detecting and timely adjusting;
step four, installing an integral arc-shaped reverse-character purline on the ground in the truss system installation process; after the truss system is installed, hoisting an arc-shaped reverse-character purline, connecting the arc-shaped reverse-character purline with the truss system through truss vertical rods, and connecting the arc-shaped reverse-character purline with a fixed structure through oblique connecting purlines; at the moment, the BIM measurement and control point needs to be monitored, and the change of the connection displacement sensor and the stress sensor is guaranteed to be installed in an allowable position, stress and displacement range;
step five, after the installation of the arc-shaped return purline is completed, laying BIM measurement and control points on the arc-shaped return purline and the oblique connecting purline; gradually installing the straight-back purlines, gradually installing the inclined ridge purlines, and then gradually arranging BIM measurement and control points; lofting is carried out through BIM measurement and control points in the installation process, and four-point X-shaped check and space positioning are carried out through square check points;
step six, after the roof assembly is installed, stressed and displaced stably, connecting the channel units; the channel main body is installed on the top of the completed floor in a segmented mode, and spliced after segmented hoisting; the joint of the transverse channel main body and the longitudinal channel main body is firstly hoisted; the channel main body is assembled and installed together with the corresponding upper channel connecting beam, the channel hanging connecting column assembly and the channel hanging column connecting piece; prefabricating and installing the upper connecting beam top connecting piece of the channel on the upper connecting beam of the channel in advance corresponding to the truss system;
step seven, hoisting and installing the channel units from the transverse and longitudinal connection intersection points to the periphery when the channel units are connected, setting BIM measurement and control points at the connection intersection points and the assembly points, and performing process control and checking through four points; when in hoisting, the hoisting machine is arranged on the truss bottom rod until all the channel units are arranged.
The beneficial effects of the invention are as follows:
1) The invention is beneficial to splicing and hoisting during installation through the integrated connection of the under-house upright post and the roof assembly; through the design of the lug connection plate of the vertical post under the house, the accurate butt joint of the top section of the vertical post under the house is convenient to realize, and the lower bearing force of the roof assembly is facilitated; through the multistage arrangement of the positive return-word purline and the arc return-word purline, the roof structure is attractive, the stress area is more favorably enlarged, and the positive return-word purline and the arc return-word purline are connected in a classified manner and in different hoisting manners, so that convenience and safety construction are more favorably realized;
2) According to the invention, through the arrangement of the channel unit and the arrangement of the channel hanging column assembly and the channel hanging column connecting piece, the hanging connection of the channel main body and the truss system is ensured; the channel units are assembled in advance through the top of the completed floor, then are hoisted and installed, so that the installation space can be greatly saved, and the construction precision can be ensured;
3) The invention carries out deepening construction through BIM software, not only carries out accurate positioning of site construction on the special-shaped roof assembly, but also is beneficial to positioning and installation of the channel units; four-point checking can greatly ensure the installation precision and the testing level.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention; the primary object and other advantages of the invention may be realized and attained by means of the instrumentalities and particularly pointed out in the specification.
Drawings
FIG. 1 is a schematic perspective view of a first embodiment of the present invention;
FIG. 2 is a schematic perspective view of a roofing assembly;
FIG. 3 is a partial schematic perspective view of a roofing assembly;
FIG. 4 is a top view of the roofing assembly;
FIG. 5 is a schematic diagram of the channel unit, underfloor column and truss system connection structure;
FIG. 6 is an elevation view of the channel unit, the underfloor columns, and the truss system connection;
fig. 7 is a schematic perspective view of the channel unit structure;
FIG. 8 is a schematic illustration of an upper channel tie roof connection and an upper channel tie connection;
FIG. 9 is a schematic perspective view of an upper beam top connector of the tunnel;
FIG. 10 is a schematic illustration of a channel hanger assembly and a channel hanger connection;
FIG. 11 is a schematic illustration of the connection of the channel bottom rail and channel sling column assemblies;
FIG. 12 is a schematic view of a top connection of a channel sling column attachment and a channel sling column assembly.
Reference numerals: 1-under-house columns, 11-columns, 12-connection plates, 13-connection lugs, 14-column stiffening rib plates, 2-roof assemblies, 21-return purlins, 211-return purlins, 212-arc return purlins, 22-diagonal purlins, 23-diagonal purlins, 3-channel units, 31-channel main bodies, 311-channel bottom beams, 312-channel bottom stringers, 313-channel columns, 314-channel side rails, 32-channel upper connection beams, 321-channel upper connection beam main bodies, 322-channel upper connection Liang Lianban, 33-channel hanging column assemblies, 331-channel hanging connection main columns, 332-channel hanging connection plates, 333-channel hanging column hanging fasteners, 34-channel hanging column connectors, 341-channel hanging column connection plates, 342-channel hanging column connection rib plates, 35-channel upper connection beam top connectors, 351-channel upper connection Liang Dinglian vertical plates (351), 352-channel upper connection beam top transverse plates, 353-channel upper connection beam top connection rib plates, 4-channel system, 41-channel hanging column connectors, 42-42, 45-truss side truss connection rods, 45-truss side truss connection beams, and truss connection beams.
Detailed Description
Taking a certain steel structure engineering as an example, a roof is arranged at the top of a 6-layer steel structure, a truss is arranged below the roof, a channel is connected below the truss, and the span of the roof truss is 46.8 meters; the field welding is carbon dioxide gas shielded welding, the model of the welding wire is ER50-6, and the specification is phi 1.2mm; the total steel amount of the engineering is about 1900 tons.
Referring to fig. 1 to 12, the BIM-based multi-stage variable cross-section roof structure including channels includes under-house posts 1, roof modules 2 connected to tops of the under-house posts 1, truss systems 4 connected between the under-house posts 1 and located below the roof modules 2, and channel units 3 connected below the truss systems 4.
In the embodiment, the roof assembly 2 is gradually-expanded from top to bottom and is in multi-stage step-shaped distribution and comprises return purlins 21, inclined ridge purlins 22 and inclined connecting purlins 23 which are arranged in a grading manner, wherein the inclined ridge purlins 22 are connected to the return purlins 21; wherein, the return-word purline 21 comprises an upper positive return-word purline 211 and a lower arc return-word purline 212; the inclined ridge purline 22 is connected to the corner of the return-word purline 21 and is in a right-angle L shape at the two long ends, the inclined connecting purline 23 is in an inclined U shape and is downward in opening, and the inclined connecting purline 23 is connected to the corner of the arc return-word purline 212 and is connected with the inclined ridge purline 22 in a penetrating manner in the middle.
In construction, the positive-return-character purline 211 and the arc-shaped return-character purline 212 are respectively manufactured and hoisted, wherein the arc-shaped return-character purline 212 is hoisted after being integrally prefabricated, and each positive-return-character purline 211 is manufactured independently and hoisted until the construction of the roof structure is completed.
BIM measurement and control points are arranged at the connection part of the inclined ridge purline 22 and the return-word purline 21 and at the connection part of the inclined connecting purline 23 and the arc return-word purline 212; at least one BIM measurement and control point is arranged in the middle of the long direction and the short direction of the return purline 21; and the BIM measurement and control point is used for controlling during installation, so that accurate positioning is ensured.
In this embodiment, the arc-shaped zigzag purlines 212 are arranged in groups, at least two zigzag purlines 21 are arranged in a group, and the arc-shaped zigzag purlines 212 become smaller from bottom to top in sequence; the length and the width of the straight-back purline 211 are smaller than those of the arc-shaped straight-back purline 212 and sequentially become smaller from bottom to top; the oblique connecting purlines 23 are integrally connected with the arc-shaped return-to-letter purlines 212, and the oblique ridge purlines 22 are spliced and connected with the positive return-to-letter purlines 211.
In this embodiment, the under-house pillar 1 comprises a spliced connecting pillar body 11, a connecting plate 12 arranged in the pillar body 11, a lug connecting plate 13 connected to the splicing section of the top Duan Li pillar body 11, and a pillar stiffening rib plate 14 connected to the pillar body 11. Wherein, the top section of the lower vertical column 1 is detachably connected with the truss system 4, and the top section is integrally connected with the truss system 4 and hoisted and connected to the lower vertical column 1 at the lower part of the pre-installation.
In the embodiment, the upright body 11 is made of an H-shaped steel member, the same side of the H-shaped upright body 11 is connected with connecting and fixing plates 12 at intervals, the bottom of the top section of the connecting and fixing plates 12 is connected with a lug connecting plate 13, and the lug connecting plate 13 is also arranged on the corresponding lower column of the top section; the two sides of the lug connecting plate 13 are welded with the upright post body 11 which is connected with the upper and lower through steel plates; BIM measurement and control points, displacement sensors and stress sensors are arranged on the upper and lower lug connecting plates 13, wherein the BIM measurement and control points are arranged on the same vertical line.
In this embodiment, the rods of the truss system 4 are all made of steel rods. Truss system 4 comprises truss bottom rods 41 connected with vertical plates 351 of Liang Dinglian on corresponding channels, truss top rods parallel to truss bottom rods 41 and correspondingly connected to the lower parts of the inverted-U-shaped purlines 21, truss vertical rods 43 and truss diagonal rods 42 connected between truss bottom rods 41 and truss top rods, truss vertical connecting rods 44 connected between truss diagonal rods 42 and inverted-U-shaped purlines 21, truss side connecting rods 45 connected between adjacent truss rods, and truss connecting plates 46 detachably connected between truss rods and upright post bodies 11. Wherein, BIM measurement and control points, connection displacement sensors and stress sensors are arranged on the truss bottom rod 41 at the connection part with the channel upper connection Liang Dinglian vertical plate 351. Wherein the truss top bars are arranged in parallel with the truss bottom bars 41.
In this embodiment, the channel units 3 are distributed in a grid manner and are arranged in a cross-shaped manner, wherein the long-directional span and space are ensured at two ends of the periphery of the roof assembly 2 in a short direction, which is also beneficial to node control. The channel unit 3 comprises a channel body 31, an upper channel bridge 32 arranged above the channel body 31, a channel suspension column assembly 33 connected between the upper channel bridge 32 and the channel, a channel suspension column connector 34 connected between the channel suspension column assembly 33 and the upper channel bridge 32, and an upper channel bridge top connector 35 connected between the upper channel bridge 32 and the truss system 4.
In the embodiment, the gridded channel units 3 are arranged in a long-direction extending and passing way of the roof assembly 2, BIM measurement and control points are arranged at the splicing positions of the long-direction channel units 3 and the short-direction channel units 3, and BIM measurement and control points are arranged at least in the long-direction middle of the channel units 3; the four-point check of BIM measurement and control points is arranged at the joint of the long direction and the short direction, so that not only can the space coordinate positioning be performed, but also the displacement in a certain direction can be calculated through the space position change of the four points, and whether the stress or deformation meets the requirements can be deduced.
In this embodiment, the channel main body 31 includes a channel bottom beam 311, a channel bottom beam 312 horizontally and vertically connected to the channel bottom beam 311, a channel upright 313 vertically and vertically connected to the bottom beam, and a channel guard bar 314 connected to the top of the channel upright 313; the side sill is attached to the outside of the channel rail 314 and is correspondingly attached to the channel hitch post assembly 33.
The upper connecting beam 32 of the channel is a square steel pipe fitting, the upper connecting beam 32 of the channel comprises an upper connecting beam main body 321 of the channel which is spliced and connected and an upper connecting beam Liang Lianban of the channel which is connected to the spliced part, the upper connecting beam main body 321 of the channel is a tubular piece, the connecting beam Liang Lianban is a piece, and the connecting part extends into the upper connecting beam 32 of the channel; the upper channel connecting beams 32 are provided with channel hanging column assemblies 33 at intervals along the length direction.
In this embodiment, the channel suspending column assembly 33 comprises a channel suspending main column 331 connected to the channel side sill 312, a channel suspending plate 332 connected between the channel side sill 312 and the channel suspending main column 331, and a channel suspending column suspending member 333 disposed on the channel suspending main column 331; the channel hanging column hanging fixture 333 is a connecting plate which is detachably connected to the channel hanging main column 331 and has an adjustable angle, and the connecting plate is connected with the channel hanging main column 331 at an acute angle; the connecting plate is connected with the reinforcing rod corresponding to the lifting hook. The channel hanging main column 331, the channel bottom longitudinal beam 312 and the channel bottom cross beam 311 are made of angle steel or square steel pipes, and the channel hanging plate 332 is made of steel plates.
In this embodiment, the channel hanging post connecting pieces 34 are all made of steel plates or section steel, and comprise a channel hanging post connecting plate 341 connected to the top of the channel hanging main post 331, and channel hanging post connecting ribs 342 connected to two sides of the channel hanging post connecting plate 341 in the longitudinal direction, wherein the channel hanging post connecting plate 341 and the channel hanging post connecting ribs 342 are connected in an i shape, the channel hanging post connecting plate 341 is fixedly connected with the channel upper connecting beam 32, and the channel hanging post connecting ribs 342 are connected between the channel hanging post connecting plate 341 and the channel upper connecting beam 32.
In this embodiment, the upper channel beam top connecting member 35 is made of steel plate and comprises upper channel beam connecting Liang Dinglian vertical plates 351 connected to two sides of the upper channel beam 32, upper channel beam top connecting transverse plates 352 connected between the upper channel beam connecting Liang Dinglian vertical plates 351, and upper channel beam top connecting rib plates 353 connected to two sides of the upper channel beam connecting Liang Dinglian vertical plates 351 and connected to the corresponding truss system 4; the top of the vertical plate 351 connected with the Liang Dinglian on the channel is provided with an arc notch which is arranged corresponding to the diameter of the rod piece of the truss system 4; the upper beam connecting top connecting transverse plate 352 of the channel is arranged on the horizontal plane of the bottom of the arc-shaped notch and correspondingly supports the corresponding truss system 4 rod pieces.
Referring to fig. 1 to 12, a construction method of the BIM-based multi-stage variable cross-section roof structure with channels is further described, and the concrete steps are as follows:
firstly, building a BIM model, and respectively deepening a positive return-word purline 211 and an arc return-word purline 212 in the return-word purline 21, wherein the positive return-word purline 211 is assembled, hoisted and connected, and the arc return-word purlines 212 are integrally connected; the stress of the structure at the integral roof is calculated, and then the distance, the model and the number of truss systems 4 are determined.
And secondly, marking the point positions at the positions where BIM measurement and control points are arranged in the model, and recording space coordinates together with square check points at the periphery of each point position.
Constructing the lower part of the lower upright post 1 of the lower house in advance, and then assembling the truss system 4 at the top of the constructed floor and connecting the truss system with the upper section of the lower upright post 1; the truss system 4 of the next truss is hoisted and simultaneously butt-jointed with the top section and the lower section of the lower upright post 1 of the house; BIM measurement and control points, connection displacement sensors and stress sensors are respectively arranged on the installed under-house upright post 1 and the truss bottom rod 41, and synchronous detection and timely adjustment are carried out.
Step four, in the installation process of the truss system 4, installing an integral arc-shaped return-word purline 212 on the ground; after the truss system 4 is installed, the arc-shaped reverse-character purlines 212 are hoisted, are connected with the truss system 4 through truss vertical rods 43, and are connected with the fixed structure through oblique connecting purlines 23; at the moment, the BIM measurement and control point needs to be monitored, and the change of the displacement sensor and the stress sensor is connected, so that the BIM measurement and control point is guaranteed to be installed in an allowable position, stress and displacement range.
Step five, after the installation of the arc-shaped return purline 212 is completed, laying BIM measurement and control points on the arc-shaped return purline 212 and the oblique connecting purline 23; gradually installing the straight-back purlins 211 and the inclined ridge purlins 22, and then gradually arranging BIM measurement and control points; lofting is carried out through BIM measurement and control points in the installation process, and four-point X-shaped check sum space positioning is carried out through square check points.
Step six, after the roof assembly 2 is installed, stressed and displaced stably, connecting the channel units 3; the channel main body 31 is installed on the top of the completed floor in a segmented mode, and spliced after being hoisted in a segmented mode; wherein the joint of the transverse channel main body 31 and the longitudinal channel main body 31 is firstly hoisted; the channel main body 31 is assembled and installed together with the corresponding channel upper connecting beam 32, the channel hanging column assembly 33 and the channel hanging column connecting piece 34; the upper channel beam top connector 35 on the upper channel beam 32 is prefabricated and installed in advance corresponding to the truss system 4.
Step seven, hoisting and installing the channel units 3 from the transverse and longitudinal connection intersection points to the periphery when the channel units are connected, setting BIM measurement and control points at the connection intersection points and the assembly points, and performing process control and checking through four points; in the hoisting, the hoisting machine is mounted on the truss bottom bar 41 until all the channel units 3 are mounted.
The foregoing is merely illustrative of preferred embodiments of the present invention, and the scope of the present invention is not limited thereto, but any changes or substitutions that would occur to those skilled in the art within the scope of the present invention are intended to be included in the scope of the present invention.
Claims (9)
1. The BIM-based multi-stage variable cross-section roof structure with the channels is characterized by comprising under-house upright posts (1), roof components (2) connected to the tops of the under-house upright posts (1), truss systems (4) connected between the under-house upright posts (1) and positioned below the roof components (2) and channel units (3) connected below the truss systems (4);
the roof assembly (2) is gradually-expanded from top to bottom and is in multi-stage step-shaped distribution and comprises return purlines (21), inclined ridge purlines (22) and inclined connecting purlines (23) which are arranged in a grading manner, wherein the inclined ridge purlines (22) are connected to the return purlines (21); the inverted U-shaped purline (21) comprises an upper inverted U-shaped purline (211) and a lower arc-shaped inverted U-shaped purline (212); the inclined ridge purline (22) is connected to the corner of the return-word purline (21) and is in a right-angle L shape at the two long ends, the inclined connecting purline (23) is in an inclined U shape and is provided with a downward opening, the inclined connecting purline (23) is connected to the corner of the arc return-word purline (212) and the middle part of the inclined connecting purline is connected with the inclined ridge purline (22) in a penetrating manner;
BIM measurement and control points are arranged at the connection part of the inclined ridge purline (22) and the return-word purline (21) and at the connection part of the inclined connecting purline (23) and the arc return-word purline (212); at least one BIM measurement and control point is arranged in the middle of the long direction and the short direction of the return purline (21);
the under-house upright post (1) comprises an assembled connecting upright post body (11), a connecting and fixing plate (12) arranged in the upright post body (11), a lug connecting plate (13) connected to a splicing section of the top Duan Li post body (11) and a post stiffening rib plate (14) connected to the upright post body (11); the top section of the under-house upright post (1) is detachably connected with the truss system (4), and the top section and the truss system (4) are integrally connected and hoisted to the pre-installed under-house upright post (1);
the channel units (3) are distributed in a grid mode and comprise a channel main body (31), an upper channel connecting beam (32) arranged above the channel main body (31), a channel hanging column assembly (33) connected between the upper channel connecting beam (32) and a channel, a channel hanging column connector (34) connected between the channel hanging column assembly (33) and the upper channel connecting beam (32) and an upper channel connecting beam top connector (35) connected between the upper channel connecting beam (32) and the truss system (4);
the channel hanging column assembly (33) comprises a channel hanging main column (331) connected to the channel bottom longitudinal beam (312), a channel hanging plate (332) connected between the channel bottom longitudinal beam (312) and the channel hanging main column (331), and a channel hanging column hanging firmware (333) arranged on the channel hanging main column (331);
the channel hanging column hanging fixture (333) is a connecting plate which is detachably connected to the channel hanging main column (331) and has an adjustable angle, and the connecting plate is connected with the channel hanging main column (331) at an acute angle; the connecting plate is connected with the reinforcing rod corresponding to the lifting hook;
the gridded channel units (3) are arranged in a manner of extending out and extending through the roof assembly (2) in a long direction, BIM measurement and control points are arranged at the spliced positions of the long-direction channel units (3) and the short-direction channel units (3), and BIM measurement and control points are arranged at least in the middle of the long-direction channel units (3).
2. The BIM-based multi-stage variable cross-section roof structure with the channels, which is characterized in that the upright post body (11) is made of H-shaped steel pieces, connecting and fixing plates (12) are connected to the same side of the H-shaped upright post body (11) at intervals, the connecting and fixing plates (12) are connected with lug connecting plates (13) at the bottom of the top section, and lug connecting plates (13) are also arranged on the corresponding lower columns of the top section; the two sides of the lug connecting plate (13) are welded with upright post bodies (11) which are connected with the upper part and the lower part by connecting steel plates;
BIM measurement and control points, displacement sensors and stress sensors are arranged on the upper and lower lug connecting plates (13), wherein the BIM measurement and control points are arranged on the same vertical line.
3. The BIM-based multi-stage variable cross-section roof structure with channels, as claimed in claim 1, wherein the arc-shaped return-word purlines (212) are arranged in groups, at least two return-word purlines (21) are arranged in a group, and the arc-shaped return-word purlines (212) are sequentially smaller from bottom to top; the length and the width of the positive return character purline (211) are smaller than those of the arc-shaped return character purline (212) and sequentially become smaller from bottom to top;
the oblique connecting purlines (23) are integrally connected with the arc-shaped return-to-letter purlines (212), and the oblique ridge purlines (22) are spliced and connected with the positive return-to-letter purlines (211).
4. The BIM-based multi-stage variable cross-section roof structure with channels according to claim 2, wherein the channel body (31) includes a channel bottom beam (311), a channel bottom beam (312) horizontally and vertically connected to the channel bottom beam (311), a channel pillar (313) vertically and vertically connected to the channel bottom beam (311), and a channel guard bar (314) connected to the top of the channel pillar (313);
the side sill is connected to the outside of the channel guard bar (314) and correspondingly connected to the channel hanging column assembly (33).
5. The BIM-based multi-stage variable cross-section roof structure with channels according to claim 4, wherein the channel upper connecting beam (32) comprises a spliced channel upper connecting beam main body (321) and a channel upper connecting beam Liang Lianban (322) connected to the spliced location, the channel upper connecting beam main body (321) is a tubular member, the connecting beam Liang Lianban is a member, and the connecting location extends into the channel upper connecting beam (32); and the upper connecting beams (32) of the channel are provided with channel hanging column assemblies (33) at intervals along the length direction.
6. The BIM-based multi-stage variable cross-section roof structure including a channel, as claimed in claim 1, wherein the channel hanging post connector (34) includes a channel hanging post connecting plate (341) connected to a top of the channel hanging post (331), and channel hanging post connecting ribs (342) connected to both longitudinal sides of the channel hanging post connecting plate (341), the channel hanging post connecting plate (341) and the channel hanging post connecting ribs (342) are connected in an i-shape, the channel hanging post connecting plate (341) is fixedly connected with the channel upper connecting beam (32), and the channel hanging post connecting ribs (342) are connected between the channel hanging post connecting plate (341) and the channel upper connecting beam (32).
7. The BIM-based multi-stage variable cross-section roof structure with channels of claim 6, wherein the channel-up roof connection (35) comprises channel-up Liang Dinglian risers (351) connected to both sides of the channel-up roof (32), channel-up roof connection cross-plates (352) connected between the channel-up Liang Dinglian risers (351), and channel-up roof connection cross-plates (353) connected to both sides of the channel-up Liang Dinglian risers (351) and connected to the corresponding truss system (4);
an arc notch is formed in the top of the vertical plate (351) connected with the Liang Dinglian on the channel and corresponds to the diameter of the rod piece of the truss system (4); the upper beam connecting top connecting transverse plate (352) of the channel is arranged on the horizontal plane of the bottom of the arc-shaped notch and corresponds to the rod piece of the supporting corresponding truss system (4).
8. The BIM-based multi-stage variable cross-section roofing structure including channels as claimed in claim 7, wherein the truss system (4) includes a truss bottom bar (41) connected to a Liang Dinglian riser (351) corresponding to the channel, a truss top bar parallel to the truss bottom bar (41) and connected to a lower side of the return purlin (21), a truss vertical bar (43) and a truss diagonal bar (42) connected between the truss bottom bar (41) and the truss top bar, a truss vertical bar (44) connected between the truss diagonal bar (42) and the return purlin (21), a truss side bar (45) connected between adjacent truss bars, and a truss connecting plate (46) detachably connected between the truss bars and the column body (11);
wherein BIM measurement and control points, a connection displacement sensor and a stress sensor are arranged at the connection part of the truss bottom rod (41) and the channel upper connecting Liang Dinglian vertical plate (351).
9. A method of constructing a BIM-based channel-containing multi-stage variable cross-section roofing structure according to any one of claims 1 to 8, including the steps of:
firstly, building a BIM model, and respectively deepening a positive return-word purline (211) and an arc return-word purline (212) in the return-word purline (21), wherein the positive return-word purline (211) is assembled and hoisted and connected, and the arc return-word purlines (212) are integrally connected; the stress of the structure at the integral roof is calculated, and then the distance, the model and the number of truss systems (4) are determined;
marking the point positions at the BIM measurement and control points in the model, and recording space coordinates together with square check points at the periphery of each point position;
constructing an under-house upright post (1) at the lower part of the under-house upright post (1) in advance, and then assembling a truss system (4) at the top of the constructed floor and connecting the truss system and the under-house upright post (1) at the top section; hoisting a truss system (4) of the next truss, and simultaneously butting the top section and the lower section of the lower upright post (1) of the house; BIM measurement and control points, a connection displacement sensor and a stress sensor are respectively arranged on the installed under-house upright post (1) and the truss bottom rod (41), and synchronous detection and timely adjustment are carried out;
step four, installing an integral arc-shaped reverse-character purline (212) on the ground in the installation process of the truss system (4); after the truss system (4) is installed, hoisting an arc-shaped reverse-character purline (212), connecting the arc-shaped reverse-character purline with the truss system (4) through truss vertical rods (43), and connecting the arc-shaped reverse-character purline with a fixed structure through oblique connecting purlines (23); at the moment, the BIM measurement and control point needs to be monitored, and the change of the connection displacement sensor and the stress sensor is guaranteed to be installed in an allowable position, stress and displacement range;
step five, after the arc-shaped return-to-letter purline (212) is installed, BIM measurement and control points are distributed on the arc-shaped return-to-letter purline (212) and the oblique connecting purline (23); gradually installing the straight-back purlines (211) and the inclined ridge purlines (22), and then gradually arranging BIM measurement and control points; lofting is carried out through BIM measurement and control points in the installation process, and four-point X-shaped check and space positioning are carried out through square check points;
step six, after the roof assembly (2) is installed, stressed and displaced stably, connecting the channel units (3); the channel main body (31) is installed on the top of the completed floor in a segmented mode, and spliced after being hoisted in a segmented mode; wherein the joint of the transverse channel main body (31) and the longitudinal channel main body (31) is firstly hoisted; the channel main body (31) is assembled and installed together with the corresponding channel upper connecting beam (32), the channel hanging column assembly (33) and the channel hanging column connecting piece (34); the upper connecting beam top connecting piece (35) of the upper connecting beam (32) of the channel is prefabricated and installed in advance corresponding to the truss system (4);
step seven, hoisting and installing the channel units (3) from the transverse and longitudinal connection intersection points to the periphery when the channel units are connected, setting BIM measurement and control points at the connection intersection points and the assembly points, and performing process control and checking through four points; when in hoisting, the hoisting machine is arranged on the truss bottom rod (41) until all the channel units (3) are arranged.
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| CN202211230966.5A CN115538681B (en) | 2022-10-10 | 2022-10-10 | BIM-based channel-containing multistage variable cross-section roof structure and construction method thereof |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3117628A1 (en) * | 1981-05-05 | 1982-11-25 | Albert 7922 Herbrechtingen Häußler | Roof reinforcement, in particular for a saddle-type triple roof |
| CN215564748U (en) * | 2021-08-30 | 2022-01-18 | 青岛城建集团有限公司 | Pavement for roof structure of swimming pool |
| CN114775881A (en) * | 2022-05-10 | 2022-07-22 | 中国建筑第二工程局有限公司 | Dome structure hoisting construction method and mounting and connecting structure |
| CN114991376A (en) * | 2022-07-27 | 2022-09-02 | 中国建筑第二工程局有限公司 | Installation structure of corridor-containing comprehensive hall based on BIM technology and construction method thereof |
-
2022
- 2022-10-10 CN CN202211230966.5A patent/CN115538681B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3117628A1 (en) * | 1981-05-05 | 1982-11-25 | Albert 7922 Herbrechtingen Häußler | Roof reinforcement, in particular for a saddle-type triple roof |
| CN215564748U (en) * | 2021-08-30 | 2022-01-18 | 青岛城建集团有限公司 | Pavement for roof structure of swimming pool |
| CN114775881A (en) * | 2022-05-10 | 2022-07-22 | 中国建筑第二工程局有限公司 | Dome structure hoisting construction method and mounting and connecting structure |
| CN114991376A (en) * | 2022-07-27 | 2022-09-02 | 中国建筑第二工程局有限公司 | Installation structure of corridor-containing comprehensive hall based on BIM technology and construction method thereof |
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