CN112627580A - Exposed circular wood column base prestress reinforcing device applicable to high-rise wood structure - Google Patents

Exposed circular wood column base prestress reinforcing device applicable to high-rise wood structure Download PDF

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Publication number
CN112627580A
CN112627580A CN202110078977.5A CN202110078977A CN112627580A CN 112627580 A CN112627580 A CN 112627580A CN 202110078977 A CN202110078977 A CN 202110078977A CN 112627580 A CN112627580 A CN 112627580A
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China
Prior art keywords
end plate
rise
column base
wood
reinforcing device
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Pending
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CN202110078977.5A
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Chinese (zh)
Inventor
范敬贤
张延泰
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Nanjing Forestry University
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Nanjing Forestry University
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Priority to CN202110078977.5A priority Critical patent/CN112627580A/en
Publication of CN112627580A publication Critical patent/CN112627580A/en
Pending legal-status Critical Current

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    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04GSCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G23/00Working measures on existing buildings
    • E04G23/02Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
    • E04G23/0218Increasing or restoring the load-bearing capacity of building construction elements
    • E04G23/0225Increasing or restoring the load-bearing capacity of building construction elements of circular building elements, e.g. by circular bracing
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62Insulation or other protection; Elements or use of specified material therefor
    • E04B1/92Protection against other undesired influences or dangers
    • E04B1/98Protection against other undesired influences or dangers against vibrations or shocks; against mechanical destruction, e.g. by air-raids
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04HBUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H9/00Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
    • E04H9/02Buildings, 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
    • E04H9/027Preventive constructional measures against earthquake damage in existing buildings

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Structural Engineering (AREA)
  • Emergency Management (AREA)
  • Business, Economics & Management (AREA)
  • Environmental & Geological Engineering (AREA)
  • Civil Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electrochemistry (AREA)
  • Chemical & Material Sciences (AREA)
  • Working Measures On Existing Buildindgs (AREA)

Abstract

The utility model provides a high-rise timber structure is suitable for circular post column base prestressing force reinforcing apparatus of exposed, by upper end plate (1), lower end plate (2), interior baffle (6), hole (3) are reserved to the baffle, interior steel cylinder (5), hole (4) are reserved to the inner tube, prestressing tendons (7), ground tackle (8), end plate reservation hole (9) are constituteed, its characterized in that interior steel cylinder (5) parcel circular post, and pass inner tube reservation hole (4) through the rivet and connect, upper end plate (1), lower end plate (2), interior steel cylinder (5), prestressing tendons (7) constitute the component part that has from restoring to the throne function, prestressing tendons (7) reserve hole (9) and are fixed in upper end plate (1) and lower end plate (2) by ground tackle (8) through the end plate. The invention can effectively perform earthquake resistance and reinforcement on the round timber column, improve the bending resistance and the shearing resistance of the round timber column, realize the self-resetting function of the round timber column in the high-rise timber structure under strong earthquake, and reduce the lateral displacement and the residual deformation of the timber structure under the earthquake action.

Description

Exposed circular wood column base prestress reinforcing device applicable to high-rise wood structure
Technical Field
The invention relates to an exposed circular wood column base prestress reinforcing device applicable to a high-rise wood structure, which is applied to a building structure and belongs to the field of civil engineering.
Background
In recent years, many high-rise residential and public timber structure buildings are built based on the continuous development and progress of engineering wood products. With the improvement of standards and the aging of materials, the earthquake-resistant performance of some existing high-rise timber structures does not meet the requirements at the early stage.
The wooden column is a main vertical and lateral stress component and plays an important role in internal force transmission. Under the action of strong shock, the wood structure usually has large lateral displacement and large residual displacement. In order to improve the anti-seismic performance of the existing high-rise timber structure, the invention provides a column base prestress reinforcing device for a round timber column in the high-rise timber structure. On one hand, the device integrates the material performance of steel, and can improve the lateral rigidity resistance and the vertical bearing capacity of the column; on the other hand, the restoring force provided by the initial pretensioning force of the prestressed tendons enables the structure to achieve the self-resetting effect, so that the anti-seismic performance of the column is improved, and the lateral displacement and the residual deformation under the earthquake are reduced.
Disclosure of Invention
The invention aims to reinforce a circular wood column in an existing high-rise wood structure, provides an exposed circular wood column base prestress reinforcing device applicable to the high-rise wood structure, improves the requirement on the anti-seismic performance of the wood column, improves the lateral rigidity and the vertical bearing capacity of the existing column, fully exerts the bearing capacity of the wood column and the energy consumption capacity in an earthquake, enables the structure to achieve a self-resetting effect after the earthquake through the restoring force provided by the initial pretensioning force of prestressed ribs, reduces the lateral displacement and the residual deformation under the earthquake, is easy to assemble on site, and can be applied to the column base reinforcement of the bottom layer circular wood column in the high-rise wood structure and the heavy wood structure.
The technical scheme of the invention is as follows: the exposed circular post base prestress reinforcing device for high-rise timber structure consists of upper end plate, lower end plate, inner partition plate, partition plate preformed hole, inner steel cylinder, inner cylinder preformed hole, prestressed rib, anchor, end plate preformed hole and anchor.
The upper end plate and the lower end plate are formed by splicing a plurality of fan-shaped steel plates; the inner steel cylinder is formed by splicing a plurality of sections of arc-shaped cylinders. The inner side surface of the inner partition plate is welded at two ends of each section of arc-shaped cylinder of the inner steel cylinder, and the upper side surface and the lower side surface are respectively welded on the upper end plate and the fan-shaped steel plate of the end plate; the adjacent inner partition plates are connected by bolts through the reserved holes of the partition plates; the prestressed tendons are distributed and arranged in an annular shape and are perpendicular to the upper end plate and the lower end plate.
Compared with the prior art, the invention has the advantages and beneficial effects that:
1. in the device, the prestressed tendons play a role in applying prestress, and provide a reverse restoring force for the wood columns in an earthquake, so that the wood structure is reset, the effect of closing after unloading is achieved, and the lateral displacement and residual deformation of the structure are reduced;
2. the device can be manufactured in a factory, assembled on site, convenient and fast, and convenient to construct. In addition, the circular wood column and the steel component are connected into a whole through rivets, the energy consumption capacity of the column base joint is increased, and the damage of an earthquake to the main structure is effectively reduced.
Description of the drawings:
FIG. 1 is a front view of an exposed circular wood pillar base pre-stressing reinforcement device;
FIG. 2 is a sectional view of the exposed type round wood pillar base prestress reinforcing device 1-1;
FIG. 3 is a cross-sectional view of the exposed type round post base prestress reinforcing device 2-2;
FIG. 4 is a top view of the upper end plate of the exposed circular wood pillar base prestress reinforcement device;
FIG. 5 is a top view of the lower end plate of the exposed circular wood pillar base prestress reinforcement device;
in fig. 1 to 5, 1 is an upper end plate; 2 is a lower end plate; 3, reserving holes for the partition boards; 4, reserving holes for the inner cylinder; 5 is an inner steel cylinder; 6 is an inner baffle; 7 is a prestressed tendon; 8 is an anchorage device; 9, reserving holes for the end plates; 10 is an anchor bolt.
The specific implementation mode is as follows:
in order to more clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will now be described with reference to the accompanying drawings.
The invention provides an exposed circular wood column base prestress reinforcing device applicable to a high-rise wood structure, as shown in figures 1-5, which consists of an upper end plate 1, a lower end plate 2, an inner partition plate 6, partition plate reserved holes 3, an inner steel cylinder 5, inner cylinder reserved holes 4, prestressed tendons 7, an anchor 8, end plate reserved holes 9 and anchors 10, and is characterized in that the inner steel cylinder 5 wraps a circular wood column and penetrates through the inner cylinder reserved holes 4 to be connected through rivets, the upper end plate 1, the lower end plate 2, the inner steel cylinder 5 and the prestressed tendons 7 form a component part with a self-resetting function, the prestressed tendons 7 are fixed on the upper end plate 1 and the lower end plate 2 through the end plate reserved holes 9 and the anchors 8, and the anchors 10 are welded on the lower side of the lower end plate 2 and cast on the basis of an existing building.
The upper end plate 1 and the lower end plate 2 are formed by splicing a plurality of fan-shaped steel plates; the inner steel cylinder 5 is formed by splicing a plurality of sections of arc-shaped cylinders; the inner side surface of the inner partition plate 6 is welded at two ends of each section of arc-shaped cylinder of the inner steel cylinder 5, and the upper side surface and the lower side surface are respectively welded on the fan-shaped steel plates of the upper end plate 1 and the lower end plate 2; the adjacent inner partition plates 6 are connected through the reserved holes 3 of the partition plates by bolts; the prestressed tendons 7 are distributed and arranged in an annular shape and are perpendicular to the upper end plate 1 and the lower end plate 2.
The connecting method of the exposed circular wood column base prestress reinforcing device comprises the following steps:
(1) the inner side surfaces of two inner partition plates 6 are welded at two ends of each section of arc-shaped cylinder of the inner steel cylinder 5 in a factory, and the upper side surface and the lower side surface of each section of arc-shaped cylinder are respectively welded on the fan-shaped steel plates of the upper end plate 1 and the lower end plate 2, so that four assembled assemblies are obtained. Anchor 10 is welded to the underside of lower end plate 2.
(2) The reinforcement site cleans the existing partial foundation of the lower end of the post for placement of the anchor 10. The four assembly assemblies are assembled, the inner steel cylinder 5 wraps the round wood column, and the adjacent inner partition plates 6 are connected through the partition plate reserved holes 3 by bolts. The prestressed tendons penetrate through the upper end plate 1 and the lower end plate 2 and are firstly anchored to the lower end plate 2, and then are tensioned and anchored to the upper end plate 1. The anchor 10 is poured on the rest part of the existing building foundation by adopting concrete, and the existing round wooden column is connected with the reinforcing device by passing the rivet through the reserved hole 4 of the inner barrel.
The exposed circular wood column base prestress reinforcing device can provide restoring force for the wood column under the earthquake action by arranging the prestress ribs 7, so that the wood column can be closed again after being unloaded, and the residual deformation of the structure under the earthquake action is reduced. The steel structure is partially fused into the round wood column, so that the integral lateral stiffness, shear resistance and bending resistance of the wood column are improved, the bearing capacity and energy consumption capacity of the column base node are improved, and the damage of an earthquake to a main structure is effectively reduced. The device has simple and reasonable structure, less field construction amount and convenient and quick construction, and meets the assembly requirement.

Claims (6)

1. An exposed circular wood column base prestress reinforcing device applicable to a high-rise wood structure comprises an upper end plate (1), a lower end plate (2), an inner partition plate (6), partition plate reserved holes (3), an inner steel cylinder (5), inner cylinder reserved holes (4), prestressed tendons (7), an anchorage device (8), end plate reserved holes (9) and an anchorage device (10), the self-resetting steel column is characterized in that the inner steel cylinder (5) wraps the round wooden column and penetrates through the reserved hole (4) of the inner cylinder through a rivet to be connected, a component part with a self-resetting function is formed by the upper end plate (1), the lower end plate (2), the inner steel cylinder (5) and the prestressed tendons (7), the prestressed tendons (7) are fixed on the upper end plate (1) and the lower end plate (2) through the reserved hole (9) of the end plate and an anchorage device (8), and the anchorage devices (10) are welded on the lower side of the lower end plate (2) and cast by concrete on the basis of the existing building.
2. The exposed circular wood column base prestress reinforcing device applicable to the high-rise wood structure according to claim 1, and is characterized in that: the upper end plate (1) and the lower end plate (2) are formed by splicing a plurality of fan-shaped steel plates.
3. The exposed circular wood column base prestress reinforcing device applicable to the high-rise wood structure according to claim 1, and is characterized in that: the inner steel cylinder (5) is formed by splicing a plurality of sections of arc-shaped cylinders.
4. The exposed circular wood column base prestress reinforcing device applicable to the high-rise wood structure according to claim 1, and is characterized in that: the inner side face of the inner partition plate (6) is welded at two ends of each section of arc-shaped cylinder of the inner steel cylinder (5), and the upper side face and the lower side face are respectively welded on the fan-shaped steel plates of the upper end plate (1) and the end plate (2).
5. The exposed circular wood column base prestress reinforcing device applicable to the high-rise wood structure according to claim 1, and is characterized in that: and the adjacent inner partition plates (6) are connected by bolts through the partition plate reserved holes (3).
6. The exposed circular wood column base prestress reinforcing device applicable to the high-rise wood structure according to claim 1, and is characterized in that: the prestressed tendons (7) are distributed and arranged in an annular shape and are perpendicular to the upper end plate (1) and the lower end plate (2).
CN202110078977.5A 2021-01-19 2021-01-19 Exposed circular wood column base prestress reinforcing device applicable to high-rise wood structure Pending CN112627580A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110078977.5A CN112627580A (en) 2021-01-19 2021-01-19 Exposed circular wood column base prestress reinforcing device applicable to high-rise wood structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110078977.5A CN112627580A (en) 2021-01-19 2021-01-19 Exposed circular wood column base prestress reinforcing device applicable to high-rise wood structure

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CN112627580A true CN112627580A (en) 2021-04-09

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CN202110078977.5A Pending CN112627580A (en) 2021-01-19 2021-01-19 Exposed circular wood column base prestress reinforcing device applicable to high-rise wood structure

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114991523A (en) * 2022-07-07 2022-09-02 西安建筑科技大学 SMA prestressed tendon reinforced multilayer traditional wood structure column and reinforcing method thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114991523A (en) * 2022-07-07 2022-09-02 西安建筑科技大学 SMA prestressed tendon reinforced multilayer traditional wood structure column and reinforcing method thereof

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Application publication date: 20210409