CN115478650B - Integral wood truss-UHPC sheet joint and construction method thereof - Google Patents

Integral wood truss-UHPC sheet joint and construction method thereof Download PDF

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Publication number
CN115478650B
CN115478650B CN202211310069.5A CN202211310069A CN115478650B CN 115478650 B CN115478650 B CN 115478650B CN 202211310069 A CN202211310069 A CN 202211310069A CN 115478650 B CN115478650 B CN 115478650B
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uhpc
chord member
wood
porous metal
metal sheet
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CN115478650A (en
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李宏敏
王雨桐
左腾
王培琳
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Nanjing Forestry University
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Nanjing Forestry University
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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/29—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces built-up from parts of different material, i.e. composite structures
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/01—Reinforcing elements of metal, e.g. with non-structural coatings
    • 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
    • E04G13/00—Falsework, forms, or shutterings for particular parts of buildings, e.g. stairs, steps, cornices, balconies foundations, sills
    • E04G13/04—Falsework, forms, or shutterings for particular parts of buildings, e.g. stairs, steps, cornices, balconies foundations, sills for lintels, beams, or transoms to be encased separately; Special tying or clamping means therefor
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G17/00—Connecting or other auxiliary members for forms, falsework structures, or shutterings
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/29—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces built-up from parts of different material, i.e. composite structures
    • E04C3/291—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces built-up from parts of different material, i.e. composite structures with apertured web

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Joining Of Building Structures In Genera (AREA)
  • Rod-Shaped Construction Members (AREA)

Abstract

The invention relates to the technical field of constructional engineering, in particular to an integral wood truss-UHPC sheet joint and a construction method thereof, comprising a wood-UHPC combined beam, a wood truss, a porous metal sheet and a plurality of bolts, wherein the wood-UHPC combined beam comprises an upper chord member and a UHPC sheet, the porous metal sheet and the bolts are also used for connecting the upper chord member and the UHPC sheet in the wood-UHPC combined beam together, the wood truss comprises a steel splint, a lower chord member and three web members, the three web members and the lower chord member are tightly connected together through the steel splint and the bolts, and the upper chord member and the web members are tightly connected through the porous metal sheet and the bolts.

Description

Integral wood truss-UHPC sheet joint and construction method thereof
Technical Field
The invention relates to the technical field of constructional engineering, in particular to an integral wood truss-UHPC sheet node and a construction method thereof.
Background
The wood is a renewable, recyclable, reusable and emission-reducing 4R material, the characteristics of easy processing and easy waste treatment also prove that the wood is an environment-friendly material, is one of the materials which are used for buildings and bridges by the earliest time by human beings, has a long history in China, but because the wood in the twentieth century is cut down in a large amount, the development of the wood structure building and the bridges is stagnated, the reinforced concrete is used as a main building material to replace the wood, the concrete is pressed in a wood-concrete combined structure, the wood is tensioned, the superior performance of the two materials is exerted to the greatest extent, the combined structure overcomes the defects of inflammability, easy corrosion, limited building size and the like of the wood, and has the advantages of resource regeneration, energy conservation, environmental protection, easy construction, good anti-seismic performance and the like, and is widely applied to countries such as Europe and the like.
In order to fundamentally solve the technical problems, ultra-high performance concrete UHPC (Ultra-High Performance Concrete) can be introduced into the wood-concrete composite structure, and a novel wood-UHPC composite structure formed by combining engineering wood and UHPC plates is provided, so that the dead weight of the composite structure is reduced, the long-term deformation is reduced, the durability is improved and the spanning capacity of the composite structure is improved.
The connection is the most complex and important part in the wood structure building, and is also the weakest part of the whole structure, and the connection part of two materials in the wood-concrete combined structure is also the most important and difficult link in the design, and the common connection mode is to pour concrete on the upper part of the wood after the self-tapping screw and the bolt are nailed, and also to open the groove of the wood, embed the connecting piece and the planting bar in the interior, and pour the concrete on the upper part.
These connection methods need to prepare the second type connector in advance and even open a groove on the wood in advance, and the wood open groove can lead to the shearing of the smooth grain and the reduction of the compressive strength of the transverse grain, and the connection performance of these connectors is poor, and the construction difficulty is high and the efficiency is low, so that a novel integral node is needed to solve the problems.
Disclosure of Invention
The invention aims to provide an integral wood truss-UHPC sheet node and a construction method thereof, which are used for solving the problems in the background technology.
The technical scheme of the invention is as follows: the integral wood truss-UHPC sheet node comprises a wood-UHPC composite beam, a wood truss, a porous metal sheet and a plurality of bolts, wherein the wood-UHPC composite beam comprises an upper chord member and a UHPC sheet, and the porous metal sheet and the bolts are also used for connecting the upper chord member and the UHPC sheet in the wood-UHPC composite beam together;
the wood truss comprises a steel clamping plate, a lower chord member and three web members, wherein the three web members are tightly connected with the lower chord member through the steel clamping plate and bolts, and the upper chord member is tightly connected with the web members through porous metal sheets and bolts;
and a reinforcing mechanism is connected between the adjacent web members and between the web members and the lower chord members, the reinforcing mechanism comprises sleeve rods, slots are formed in the adjacent ends, close to each other, of the sleeve rods, and tenon blocks are inserted into the inner walls of the slots in a sliding manner.
Preferably, the positions of the middle lower part of the porous metal sheet corresponding to the upper chord member and the web member are provided with pre-drilled holes which are convenient for the bolts to penetrate and apply pre-tightening force.
Preferably, the porous metal sheet is slightly higher than the top end of the upper chord member of the wood truss, the top of the porous metal sheet is provided with an upper row of reserved holes I and a lower row of reserved holes II, the holes I are circular, the holes I and the holes II are arranged in a staggered manner, the holes II are semicircular, and the holes II are formed in the top end of the porous metal sheet.
Preferably, the upper chord member is poured with UHPC concrete, and the first hole and the second hole on the porous metal sheet are poured into the UHPC sheet.
Preferably, the reinforcing mechanism further comprises a sleeve, the outer wall of the sleeve is provided with a through hole, the sleeve is sleeved on the outer wall of the lower chord member and the web member through the through hole, one side of the sleeve, which is located at different positions, is respectively and rotatably connected with a first connecting piece and a second connecting piece, one side outer wall of the first connecting piece and one side outer wall of the second connecting piece are fixedly provided with an adjusting rod, the sleeve rod is sleeved on the outer wall of the adjusting rod in a sliding manner, one side outer wall of the sleeve rod is provided with a threaded hole, the inner wall of the threaded hole is connected with a fastening bolt through threads, and one end of the fastening bolt is in abutting contact with the outer wall of the adjusting rod.
Preferably, the inner wall of the slot is provided with a mounting groove, the inner wall of the mounting groove is clamped with a clamping ball, the outer wall of the tenon block is provided with a clamping groove, and the clamping groove is matched with the clamping ball in size.
Preferably, a pull rod is fixedly arranged on the outer wall of one side of the tenon block.
The invention also provides a construction method of the integral wood truss-UHPC sheet node, which comprises the following steps:
step one: preparing a lower chord member and three web members of a wood truss, drilling pre-drilled holes in the middle of the lower chord member and the lower part of the web members in advance at corresponding positions, facilitating bolt penetration, fixing the lower chord member and the web members by using steel clamping plates, simultaneously penetrating the bolts through the pre-drilled holes of the lower chord member, the web members and the steel clamping plates, and screwing the bolts;
step two: placing the three web members and the lower chord member connected in the previous step under the upper chord member, opening pre-drilled holes in the middle of the upper chord member and the upper edge of the web member, installing the porous metal sheet at the corresponding positions of the upper chord member and the web member, and fixing the porous metal sheet through bolts, wherein the upper edge of the installed porous metal sheet is slightly higher than the uppermost end of the upper chord member of the wood truss;
step three: the sleeve members positioned on the outer walls of the lower chord member and the web members are respectively slid to proper positions, then the adjusting rods are pulled out from the inner walls of the sleeve members until two adjacent sleeve members are opposite to each other, at the moment, the adjusting rods and the sleeve members are fixed through fastening bolts to form the integral length, and then the tenon blocks are inserted into the inner walls of the slots to realize the fixed connection between the adjacent sleeve members;
step four: placing the wood truss and the porous metal sheet which are connected in the three steps below the UHPC template, pouring the prepared UHPC in the template, and tightly connecting the wood truss and the UHPC sheet through the porous metal sheet after the UHPC is completely solidified and cured to form a whole.
The invention provides an integral wood truss-UHPC sheet node and a construction method thereof through improvement, and compared with the prior art, the integral wood truss-UHPC sheet node has the following improvement and advantages:
the method comprises the following steps: according to the invention, the prepared and stirred UHPC is directly cast on the upper chord member of the wood truss in a cast-in-place manner, the part of the porous metal sheet higher than the upper chord member is wrapped by the UHPC poured on the upper chord member, and after the solidification and maintenance of the UHPC are completed, the wood truss and the UHPC sheet are tightly connected by the porous metal sheet, and the connection performance is excellent;
and two,: according to the invention, the porous metal sheet part slightly higher than the upper chord of the wood truss is provided with the two rows of reserved holes I and holes II, the holes I and the holes II are arranged at intervals, the holes II of the upper row are semicircular, the metal sheet is cut into waves, the stress concentration area of the contact surface of the metal sheet with UHPC can be reduced when the metal sheet is subjected to lateral shearing force and longitudinal pressure, the connection performance and the service life of the node are enhanced, the UHPC can be filled into the porous metal sheet by the holes of the lower row, the integrity of the connecting piece is enhanced, and the ductility and the energy consumption capability of the connecting piece are improved, so that the service life of the connecting piece is prolonged;
and thirdly,: the reinforcing mechanism provided by the invention fully utilizes the principle of high triangle stability, so that the angle between the web member and the lower chord member is fixed, and the stability and the reliability of the node are improved;
fourth, it is: according to the invention, the length between the adjusting rod and the loop bar is adjustable, so that the scheme can adapt to wood trusses with different specifications when in use, and the applicability is improved.
Drawings
The invention is further explained below with reference to the drawings and examples:
FIG. 1 is an overall perspective view of the present invention;
FIG. 2 is a perspective view of a porous metal sheet of the present invention;
FIG. 3 is a perspective view of a wood truss section of the invention;
FIG. 4 is a perspective view of a portion of a wood-UHPC composite beam in accordance with the present invention;
FIG. 5 is a perspective view of a portion of the fastening mechanism of the present invention;
FIG. 6 is a perspective view of a socket portion of the present invention;
fig. 7 is a perspective view of a tongue portion of the present invention.
Reference numerals illustrate:
1. wood-UHPC composite beams; 11. UHPC sheet; 12. an upper chord; 2. a porous metal sheet; 21. a first hole; 22. a second hole; 3. a steel clamping plate; 4. a bolt; 5. a lower chord; 6. a web member; 7. a reinforcement mechanism; 71. a kit; 72. a loop bar; 73. an adjusting rod; 74. perforating; 75. a first connecting piece; 76. a second connecting piece; 77. tenon blocks; 771. a slot; 772. ball clamping; 773. a clamping groove; 774. a pull rod; 78. and (5) fastening a bolt.
Detailed Description
The following detailed description of the present invention clearly and fully describes the technical solutions of the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention provides an integral wood truss-UHPC sheet node and a construction method thereof by improving the integral wood truss-UHPC sheet node, and the technical scheme of the invention is as follows:
as shown in fig. 1-7, a monolithic wood truss-UHPC sheet joint comprises a wood-UHPC composite beam 1, a wood truss, a porous metal sheet 2 and a plurality of bolts 4, wherein the wood-UHPC composite beam 1 comprises an upper chord 12 and a UHPC sheet 11, and the porous metal sheet 2 and the bolts 4 are also used for connecting the upper chord 12 and the UHPC sheet 11 in the wood-UHPC composite beam 1;
the wood truss comprises a steel clamping plate 3, a lower chord member 5 and three web members 6, wherein the three web members 6 are tightly connected with the lower chord member 5 through the steel clamping plate 3 and bolts 4, and the upper chord member 12 is tightly connected with the web members 6 through the porous metal sheet 2 and the bolts 4;
be connected with strengthening mechanism 7 between the adjacent web member 6 and between web member 6 and the lower chord member 5, strengthening mechanism 7 includes loop bar 72, and slot 771 has all been seted up to adjacent loop bar 72's one end that is close to mutually, and the inner wall slip grafting of slot 771 has tenon piece 77, realizes reliable and stable connection between the loop bar 72 through tenon piece 77.
Further, the positions of the middle lower part of the porous metal sheet 2 corresponding to the upper chord member 12 and the web members 6 are provided with pre-drilled holes for facilitating the penetration of the bolts 4 and applying pre-tightening force, and the three web members 6 are fixedly connected with the upper chord member 12, the lower chord member 5 and the steel clamping plate 3 through penetrating the bolts 4 into the pre-drilled holes.
Further, the porous metal sheet 2 is slightly higher than the top end of the upper chord member 12 of the wood truss, the top of the porous metal sheet 2 is provided with two rows of holes 21 and holes 22 reserved in an upper row and a lower row, the holes 21 are round, the holes 21 and the holes 22 are arranged in a staggered manner, the holes 22 are semicircular, and the holes 22 are formed in the top end of the porous metal sheet 2.
Further, UHPC concrete is poured on the upper chord member 12, the first hole 21 and the second hole 22 which are positioned on the porous metal sheet 2 are poured inside the UHPC sheet 11, after the UHPC is solidified and cured, the wood truss and the UHPC sheet 11 are tightly connected by the porous metal sheet 2, and the connection performance is excellent.
Further, the reinforcing mechanism 7 further comprises a sleeve 71, the outer wall of the sleeve 71 is provided with a through hole 74, the sleeve 71 is sleeved on the outer walls of the lower chord member 5 and the web member 6 through the through hole 74, one side of the sleeve 71 at different positions is respectively and rotatably connected with a first connecting piece 75 and a second connecting piece 76, one side outer walls of the first connecting piece 75 and the second connecting piece 76 are fixedly provided with an adjusting rod 73, the sleeve rod 72 is sleeved on the outer wall of the adjusting rod 73 in a sliding manner, one side outer wall of the sleeve rod 72 is provided with a threaded hole, the inner wall of the threaded hole is provided with a fastening bolt 78 in a threaded connection manner, and one end of the fastening bolt 78 is in abutting contact with the outer wall of the adjusting rod 73.
Further, the inner wall of the slot 771 is provided with a mounting groove, the inner wall of the mounting groove is clamped with a clamping ball 772, the outer wall of the tenon block 77 is provided with a clamping groove 773, the clamping groove 773 is matched with the clamping ball 772 in size, when the tenon block 77 is inserted into the inner wall of the slot 771, the adjacent sleeve rod 72 is reliably connected, and the web member 6 is reliably connected with the lower chord member 5 before due to the mechanical property of the tenon block.
Further, a pull rod 774 is fixedly arranged on the outer wall of one side of the tenon block 77, and the tenon block 77 is pulled out through the pull rod 774.
The invention also provides a construction method of the integral wood truss-UHPC sheet node, which comprises the following steps:
step one: preparing a lower chord member 5 and three web members 6 of a wood truss, drilling pre-drilled holes in the middle of the lower chord member 5 and the lower parts of the web members 6 in advance at corresponding positions, facilitating the penetration of bolts 4, fixing the lower chord member 5 and the web members 6 by using steel clamping plates 3, simultaneously penetrating the bolts 4 through the pre-drilled holes of the lower chord member 5, the web members 6 and the steel clamping plates 3, and screwing the bolts 4;
step two: placing the three web members 6 and the lower chord member 5 which are connected in the previous step under the upper chord member 12, opening pre-drilled holes in the middle of the upper chord member 12 and the upper edge of the web member 6, installing the porous metal sheet 2 at the corresponding positions of the upper chord member 12 and the web member 6, and fixing the porous metal sheet 2 by bolts 4, wherein the upper edge of the installed porous metal sheet 2 is slightly higher than the uppermost end of the upper chord member 12 of the wood truss;
step three: the sleeve piece 71 positioned on the outer walls of the lower chord 5 and the web member 6 is respectively slid to a proper position, then the adjusting rod 73 is pulled out from the inner wall of the sleeve rod 72 until two adjacent sleeve rods 72 are opposite to each other, at the moment, the adjusting rod 73 and the sleeve rod 72 are fixed to form a whole length through the fastening bolt 78, and then the tenon block 77 is inserted into the inner wall of the slot 771 to realize the fixed connection between the adjacent sleeve rods 72;
step four: placing the wood truss and the porous metal sheet 2 which are connected in the three steps below a UHPC template, pouring the prepared UHPC in the template, and tightly connecting the wood truss and the UHPC sheet 11 through the porous metal sheet 2 after the UHPC is completely solidified and cured to form a whole.
When the node is used, pre-drilling holes are drilled in advance on three web members 6, an upper chord member 12 and a lower chord member 5 of a wood truss, fixing the web members by using a steel clamping plate 3 after the web members are placed according to positions, connecting the web members with the upper chord member 12 of the wood truss to corresponding positions by using bolts 4 to penetrate the pre-drilling holes, fixing the web members by using a porous metal sheet 2, penetrating the pre-drilling holes by using the bolts 4, fixing the upper end of the porous metal sheet 2 of the wood truss to be slightly higher than the upper chord member 12 of the wood truss, pouring the UHPC on the upper chord member 12 of the wood truss, and connecting the UHPC sheet 11 with the wood truss by using the porous metal sheet 2 after solidification maintenance of the UHPC.
The prepared and stirred UHPC is directly cast in situ on the upper chord member 12 of the wood truss, the part of the porous metal sheet 2 higher than the upper chord member is wrapped by the UHPC poured on the upper chord member, and after the solidification and maintenance of the UHPC are completed, the wood truss and the UHPC sheet 11 are tightly connected by the porous metal sheet 2, and the connection performance is excellent.
The part of the porous metal sheet 2 slightly higher than the wood truss upper chord member 12 is provided with two rows of reserved holes I21 and holes II 22, the holes I21 and the holes II 22 are arranged at intervals, the holes II 22 of the upper row are semicircular, the metal sheet is cut into waves, when the metal sheet is subjected to lateral shearing force and longitudinal pressure, the stress concentration area of the contact surface with UHPC is reduced, the connection performance and the service life of the node are enhanced, the holes of the lower row can enable UHPC to be filled into the porous metal sheet 2, the integrity of the connecting piece is enhanced, the ductility and the energy consumption capability of the connecting piece are improved, and the service life of the connecting piece is prolonged.
In addition, the reinforcing mechanism 7 fully utilizes the principle of high triangular stability, so that the angle between the web member 6 and the lower chord member 5 is fixed, the stability and the reliability of the node are improved, and the scheme can adapt to wood trusses with different specifications in use by means of the length adjustable mode between the adjusting rod 73 and the sleeve rod 72, so that the applicability is improved.
The previous description is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (5)

1. The utility model provides an integral wood truss-UHPC sheet metal node, includes wood-UHPC composite beam (1), wood truss, porous sheet metal (2) and a plurality of bolt (4), its characterized in that: the wood-UHPC composite beam (1) comprises an upper chord member (12) and a UHPC thin plate (11), and the porous metal thin plate (2) and the bolts (4) are also used for connecting the upper chord member (12) and the UHPC thin plate (11) in the wood-UHPC composite beam (1) together;
the wood truss comprises a steel clamping plate (3), a lower chord member (5) and three web members (6), wherein the three web members (6) are tightly connected with the lower chord member (5) through the steel clamping plate (3) and bolts (4), and the upper chord member (12) is tightly connected with the web members (6) through the porous metal sheet (2) and the bolts (4);
a reinforcing mechanism (7) is connected between the adjacent web members (6) and between the web members (6) and the lower chord member (5), the reinforcing mechanism (7) comprises a sleeve rod (72), slots (771) are formed in the adjacent ends, close to each other, of the sleeve rods (72), and tenon blocks (77) are slidably inserted into the inner walls of the slots (771);
the porous metal sheet (2) is slightly higher than the top end of the upper chord member (12) of the wood truss, the top of the porous metal sheet (2) is provided with an upper row of reserved holes I (21) and a lower row of reserved holes II (22), the holes I (21) are round, the holes I (21) and the holes II (22) are arranged in a staggered manner, the holes II (22) are semicircular, and the holes II (22) are formed in the top end of the porous metal sheet (2);
UHPC concrete is poured on the upper chord member (12), and the first hole (21) and the second hole (22) which are positioned on the porous metal sheet (2) are poured inside the UHPC sheet (11);
reinforcing mechanism (7) still include external member (71), perforation (74) have been seted up to the outer wall of external member (71), the external wall of lower chord member (5) and web member (6) is located through perforation (74) cover to external member (71) one side of external member (71) in different positions department rotates respectively and is connected with connecting piece one (75) and connecting piece two (76), equal fixed mounting of one side outer wall of connecting piece one (75) and connecting piece two (76) has regulation pole (73), loop bar (72) sliding sleeve is in the outer wall of adjusting pole (73), the one side outer wall of loop bar (72) begins to have the screw hole, the inner wall of screw hole has fastening bolt (78) through threaded connection, the one end of fastening bolt (78) and the outer wall butt contact of adjusting pole (73).
2. The monolithic wood truss-UHPC sheet joint of claim 1, wherein: the positions of the middle lower part of the porous metal sheet (2) corresponding to the upper chord member (12) and the web member (6) are provided with pre-drilled holes which are convenient for the bolts (4) to penetrate and apply pre-tightening force.
3. A monolithic wood truss-UHPC sheet joint according to claim 2, wherein: the inner wall of slot (771) has seted up the mounting groove, the inner wall joint of mounting groove has card ball (772), draw-in groove (773) have been seted up to the outer wall of tenon piece (77), the size adaptation of draw-in groove (773) and card ball (772).
4. A monolithic wood truss-UHPC sheet node according to claim 3, wherein: a pull rod (774) is fixedly arranged on the outer wall of one side of the tenon block (77).
5. The construction method of the integral wood truss-UHPC sheet node of claim 4, wherein the construction method comprises the following steps: the method comprises the following steps:
step one: preparing a lower chord member (5) and three web members (6) of a wood truss, drilling pre-drilled holes in the middle of the lower chord member (5) and the lower parts of the web members (6) in advance at corresponding positions, facilitating the penetration of bolts (4), fixing the lower chord member (5) and the web members (6) by using steel clamping plates (3), simultaneously penetrating the bolts (4) through the pre-drilled holes of the lower chord member (5), the web members (6) and the steel clamping plates (3), and screwing the bolts (4);
step two: placing the three web members (6) and the lower chord member (5) which are connected in the previous step under the upper chord member (12), drilling holes in advance in the middle of the upper chord member (12) and the upper edge of the web members (6), installing the porous metal sheet (2) at the corresponding positions of the upper chord member (12) and the web members (6), and fixing the porous metal sheet (2) through bolts (4), wherein the upper edge of the installed porous metal sheet (2) is slightly higher than the uppermost end of the upper chord member (12) of the wood truss;
step three: the sleeve members (71) positioned on the outer walls of the lower chord member (5) and the web members (6) are respectively slid to a proper position, then the adjusting rods (73) are pulled out from the inner walls of the sleeve rods (72) until two adjacent sleeve rods (72) are opposite to each other, at the moment, the adjusting rods (73) and the sleeve rods (72) are fixed to form the integral length through fastening bolts (78), and then the tenon blocks (77) are inserted into the inner walls of the slots (771) to realize the fixed connection between the adjacent sleeve rods (72);
step four: placing the wood truss and the porous metal sheet (2) which are connected in the three steps below a UHPC template, pouring the prepared UHPC in the template, and tightly connecting the wood truss and the UHPC sheet (11) through the porous metal sheet (2) after the UHPC is completely solidified and cured to form a whole.
CN202211310069.5A 2022-10-25 2022-10-25 Integral wood truss-UHPC sheet joint and construction method thereof Active CN115478650B (en)

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CN109898741A (en) * 2017-12-07 2019-06-18 扬州工业职业技术学院 Novel fabricated triangle timber truss structure
CN108729588B (en) * 2018-08-19 2023-11-28 大连阔森特新型建材有限公司 Steel-wood combined truss connection structure
CN214941638U (en) * 2021-03-29 2021-11-30 湖南建工集团有限公司 Steel-wood combined double-oblique-chord truss based on node connection
CN114704029A (en) * 2022-03-21 2022-07-05 北京华清安地建筑设计有限公司 Steel-wood combined roof truss structure

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