CN115233821A - High-ductility bamboo-wood structural member - Google Patents
High-ductility bamboo-wood structural member Download PDFInfo
- Publication number
- CN115233821A CN115233821A CN202210963565.4A CN202210963565A CN115233821A CN 115233821 A CN115233821 A CN 115233821A CN 202210963565 A CN202210963565 A CN 202210963565A CN 115233821 A CN115233821 A CN 115233821A
- Authority
- CN
- China
- Prior art keywords
- ductility
- steel bar
- bamboo
- structural member
- wood
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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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
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/26—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of wood
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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
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/26—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of wood
- E04B1/2604—Connections specially adapted therefor
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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
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/98—Protection against other undesired influences or dangers against vibrations or shocks; against mechanical destruction, e.g. by air-raids
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
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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
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/26—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of wood
- E04B1/2604—Connections specially adapted therefor
- E04B2001/266—Socket type connectors
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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
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/26—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of wood
- E04B1/2604—Connections specially adapted therefor
- E04B2001/268—Connection to foundations
- E04B2001/2684—Connection to foundations with metal connectors
Abstract
The invention discloses a high-ductility bamboo-wood structural member, which comprises a reinforcing steel bar assembly with a ductility deformation section arranged in a bamboo or wood structural member, and a reinforcement piece arranged in the lateral direction if necessary, wherein the reinforcement piece and the member are integrated by injecting glue and anchoring in a reserved hole. The ductile deformation section is a weakened section formed by precisely processing a so-called dog bone on the steel bar; the glue injection anchoring hole is a hole reserved in the bamboo or wood component for inserting the steel bar or the steel bar and then injecting glue for fixing; the anchoring end is a fixed nut or a self-locking nut arranged in the end part of the steel bar; the reinforcing piece is a nail or a bolt which can prevent the splitting of the bamboo and wood components and has a reinforcing effect on the side surface. The invention converts the deformation of the bamboo or wood structural member made of brittle materials and concentrates the deformation to the steel bar or steel bar with good deformability and other metal components, thereby effectively improving the overall ductility of the member.
Description
Technical Field
The invention relates to the technical field of bamboo and wood structural performance design, in particular to a method for improving the ductility of a structural member made of a brittle material.
Background
The construction of engineering structures by adopting bamboo and wood of low-carbon and environment-friendly materials in the field of civil engineering structures is gradually known. Modern wood structures are widely used in foreign industrialized countries and are one of the mainstream structural systems. The development of wood structure is slow in China due to the decrease of forest resources in the last century. In recent years, the imported wood structures have been gradually recognized and accepted by domestic building and structural engineers as the economy has progressed. In addition, domestic fast-growing wood also begins to mature and be available for use. On the other hand, chinese scholars and the industry also strive to develop the dominant resource bamboo in China, and a series of novel bamboo structure materials such as glued bamboo glubam, laminated wood, recombined bamboo and the like are generated and applied structurally.
Bamboo and wood materials have excellent environmental protection and excellent physical properties, but have inherent defects. Especially, bamboo and wood materials have uneven performance and directionality, are all brittle materials and are easy to split and break. The broken form of the girder of the engineered bamboo structure previously made by the inventor is that the tensile region is torn, and the bearing capacity and deformation curve thereof are typical brittle failures, as shown by the broken line in fig. 1. Therefore, solving the brittle failure of structural members made of brittle materials such as bamboo and wood and increasing the ductile deformability (shown by solid lines in fig. 1) is an important technical problem, and especially, in the aseismic design of the structure, controlling deformation and increasing ductility are a design key under the condition of ensuring the bearing capacity of the structure.
Disclosure of Invention
The invention aims to solve the problem of poor ductility of bamboo, wood and bamboo-wood combined structural members, and provides a high-ductility bamboo-wood structural member.
The technical scheme adopted by the invention is as follows: a high-ductility bamboo-wood structural member comprises a high-ductility steel bar component bearing tensile stress and a bamboo-wood material bearing pressure; the high-ductility steel bar assembly is arranged in a tension area where the bending moment at the end part of the beam or the column or the lower part of the wall body is maximum;
the high-ductility steel bar assembly is provided with a ductility deformation section, the ductility deformation section is a weakening section formed on the steel bar through precision machining, and the ductility deformation section is commonly called a dog bone section, so that the plastic deformation can be uniformly distributed in the weakening section;
glue injection anchoring holes are reserved around the high-ductility steel bar assembly, and the high-ductility steel bars are integrated with the components through glue injection in the glue injection anchoring holes.
Further, in order to reduce the anchoring length, an anchoring end can be arranged, and the anchoring end is a fixing nut or a self-locking nut which is arranged in the end part of the steel bar.
Furthermore, in order to prevent the unfavorable failure mode of splitting expansion of the bamboo and wood materials at the position where the high-ductility steel bar is arranged, a transverse reinforcing piece is arranged on the side surface of the component at the position where the high-ductility steel bar component is arranged.
Further, the transverse reinforcing piece is a lateral reinforcing nail, a screw or a split bolt.
Furthermore, a transverse reinforcing hoop is arranged around the component for configuring the high-ductility steel bar assembly part to prevent the part from splitting.
Further, the high-ductility steel bar assembly can also be a steel bar or other high-ductility material bars or plates.
When the invention is manufactured and constructed, the end part of the structural member is pre-drilled, and then the high-ductility steel bar with the ductility section is inserted into the hole and injected with glue for anchoring, while the ductility section is not bonded to ensure that the steel bar is uniformly deformed. Thereafter, a transverse reinforcement is applied to the portion where the high-ductility steel bar is disposed, if necessary, according to design verification.
Has the advantages that: the invention concentrates the tensile deformation generated by the bending deformation of the structural component made of brittle materials bamboo or wood to the reinforcing steel bar with good deformability, so that the bamboo and wood materials only bear compressive stress at relevant parts, thereby effectively improving the integral ductility of the column.
Drawings
FIG. 1 is a graph comparing brittle and ductile bearing capacity with deformation of a structural member;
FIG. 2 is a schematic diagram of an embodiment of the present invention in which high-ductility steel bars are disposed at the ends of structural columns;
FIG. 3 is a schematic view of a high-ductility steel bar assembly according to the present invention;
FIG. 4 is a schematic view of a high ductility steel bar assembly of the present invention as a steel bar;
FIG. 5 is a schematic view of the present invention illustrating the installation of high-ductility steel bars inside structural beam-column joints;
FIG. 6 is a schematic view of lateral reinforcement of the present invention.
Illustration of the drawings:
1 is high ductility reinforcing bar subassembly, 2 is the ductility deformation section, and 3 are injecting glue anchor hole, and 4 are the side direction reinforcement, and 5 are horizontal reinforcement hoop.
Detailed Description
The invention is further described with reference to the following drawings and detailed description:
as shown in fig. 2-6, a high-ductility bamboo-wood structural member comprises a high-ductility steel bar assembly 1 bearing tensile stress and a bamboo-wood material bearing pressure; the high-ductility steel bar assembly 1 is arranged in a tension area where the bending moment at the end part of a beam or a column or the lower part of a wall body is maximum;
the high-ductility steel bar component 1 is provided with a ductility deformation section 2, the ductility deformation section 2 is a weakening section formed on a steel bar through precision machining, and the weakening section is commonly called a dog bone section, so that plastic deformation can be uniformly distributed in the weakening section;
glue injection anchoring holes 3 are reserved around the high-ductility steel bar assembly 1, and the high-ductility steel bars are integrated with the components through glue injection in the glue injection anchoring holes 3.
In order to reduce the anchoring length, an anchoring end can be arranged, and the anchoring end is a fixing nut or a self-locking nut which is arranged in the end part of the reinforcing steel bar. In order to prevent the unfavorable failure mode of splitting expansion of bamboo materials at the position where the high-ductility steel bars are arranged, a transverse reinforcing piece 4 is arranged on the side face of the component at the position where the high-ductility steel bar assembly is arranged. The transverse reinforcing piece 4 is a lateral reinforcing nail, a screw or a split bolt. The transverse reinforcement can also prevent the high-ductility steel bar assembly from splitting by arranging the transverse reinforcement hoop 5 around the member for configuring the high-ductility steel bar assembly. The high-ductility steel bar assembly 1 may also be a steel bar or other high-ductility material bars or strips.
It should be noted that modifications and adaptations can be made by those skilled in the art without departing from the principles of the present invention and should be considered as within the scope of the present invention. All the components not specified in the present embodiment can be realized by the prior art.
Claims (6)
1. The utility model provides a high ductility bamboo wood structural component which characterized in that: the bamboo-wood structural member comprises a high-ductility steel bar component bearing tensile stress and a bamboo-wood material bearing pressure; the high-ductility steel bar assembly is arranged in a tension area where the bending moment at the end part of the beam or the column or the lower part of the wall body is maximum;
the high-ductility steel bar assembly is provided with a ductile deformation section, and the ductile deformation section is a weakened section formed on a steel bar through precise processing, so that plastic deformation is uniformly distributed in the weakened section;
glue injection anchoring holes are reserved around the high-ductility steel bar assembly, and the high-ductility steel bars are integrated with the components through glue injection in the glue injection anchoring holes.
2. The high-ductility bamboo-wood structural member as claimed in claim 1, characterized in that: the bamboo-wood structural member is further provided with an anchoring end, and the anchoring end is a fixing nut or a self-locking nut which is arranged in the end part of the reinforcing steel bar.
3. The high-ductility bamboo-wood structural member as claimed in claim 1, characterized in that: a transverse reinforcing member is disposed on a side surface of the member where the high-ductility steel bar assembly is disposed.
4. A high ductility bamboo wood structural member according to claim 3, characterized in that: the transverse reinforcing piece is a lateral reinforcing nail, a screw or a split bolt.
5. The high-ductility bamboo-wood structural member as claimed in claim 1, characterized in that: and a transverse reinforcing hoop is arranged around the member at the position where the high-ductility steel bar assembly is arranged.
6. The high-ductility bamboo-wood structural member as claimed in claim 1, characterized in that: the high-ductility steel bar assembly is a steel bar or other high-ductility material bars or plates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210963565.4A CN115233821A (en) | 2022-08-11 | 2022-08-11 | High-ductility bamboo-wood structural member |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210963565.4A CN115233821A (en) | 2022-08-11 | 2022-08-11 | High-ductility bamboo-wood structural member |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115233821A true CN115233821A (en) | 2022-10-25 |
Family
ID=83679666
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210963565.4A Pending CN115233821A (en) | 2022-08-11 | 2022-08-11 | High-ductility bamboo-wood structural member |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115233821A (en) |
-
2022
- 2022-08-11 CN CN202210963565.4A patent/CN115233821A/en active Pending
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