CN114032975A - Double-clamping beam overlapped component and foundation beam underpinning method - Google Patents
Double-clamping beam overlapped component and foundation beam underpinning method Download PDFInfo
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- CN114032975A CN114032975A CN202111398555.2A CN202111398555A CN114032975A CN 114032975 A CN114032975 A CN 114032975A CN 202111398555 A CN202111398555 A CN 202111398555A CN 114032975 A CN114032975 A CN 114032975A
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- 238000009424 underpinning Methods 0.000 title claims abstract description 37
- 238000000034 method Methods 0.000 title claims abstract description 17
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 102
- 239000010959 steel Substances 0.000 claims abstract description 102
- 230000000149 penetrating effect Effects 0.000 claims abstract description 15
- 230000002787 reinforcement Effects 0.000 claims abstract description 14
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 10
- 239000004570 mortar (masonry) Substances 0.000 claims description 3
- 230000003014 reinforcing effect Effects 0.000 claims description 3
- 238000007788 roughening Methods 0.000 claims description 2
- 239000004567 concrete Substances 0.000 abstract description 13
- 239000000463 material Substances 0.000 abstract description 4
- 238000009435 building construction Methods 0.000 abstract description 2
- 230000005540 biological transmission Effects 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 239000011150 reinforced concrete Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D35/00—Straightening, lifting, or lowering of foundation structures or of constructions erected on foundations
- E02D35/005—Lowering or lifting of foundation structures
-
- 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
- E04G23/00—Working measures on existing buildings
- E04G23/06—Separating, lifting, removing of buildings; Making a new sub-structure
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- General Life Sciences & Earth Sciences (AREA)
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- Mining & Mineral Resources (AREA)
- General Engineering & Computer Science (AREA)
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- Mechanical Engineering (AREA)
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Abstract
The invention discloses a double-clamped beam superposed member and a foundation beam underpinning method, and relates to the technical field of building construction. The double-clamp beam solves the problem that the existing double-clamp beam only adopts section steel or steel bars as wall penetrating members, and the bonding slippage between two materials of a single wall penetrating member and concrete is large. The wall-penetrating steel lifting beam comprises at least two wall-penetrating steel lifting beams which are arranged in parallel at intervals, wherein each wall-penetrating steel lifting beam comprises an I-shaped steel which transversely penetrates through the bottom of a underpinned original structure, a plurality of stirrups which are sleeved on the outer sides of exposed ends of the I-shaped steel, and a plurality of longitudinal reinforcements which are arranged along the length direction of the I-shaped steel and are respectively positioned on two sides of a web plate of the I-shaped steel. The method comprises the following steps: prefabricating at least two wall-penetrating steel lifting beams, forming a hole at the bottom of the underpinned original structure, enabling the at least two wall-penetrating steel lifting beams to transversely penetrate through the underpinned original structure, transversely penetrating through the underpinned original structure along the length direction by a plurality of wall-penetrating steel bars which are parallel to each other and arranged at intervals, and finally integrally pouring the wall-penetrating steel lifting beams, the wall-penetrating steel bars and the underpinned original structure into a whole to form the underpinned structure.
Description
Technical Field
The invention relates to the technical field of building construction, in particular to a double-beam laminated member and a foundation beam underpinning method.
Background
The structure underpinning is a reinforcement and transformation technology which changes the force transmission path of an original structure or enhances the bearing capacity of the original structure by means of reinforcement or additional arrangement of components and other measures. The underpinning types can be classified into foundation underpinning, wall underpinning, column underpinning, plate underpinning and the like according to different types of the structure underpinning components. When underpinning a foundation or a wall, the commonly adopted underpinning method comprises a double-clamping beam type and a single underpinning type. The double-clamped beam type steel reinforced concrete beam or the steel reinforced concrete beam can be adopted, and the double-clamped beam type steel reinforced concrete beam has the advantages of being convenient and quick to construct, small in risk, high in cost and the like.
However, because the existing double-clip beam only adopts section steel or steel bars as the wall penetrating members, the bonding slippage between the single wall penetrating member and the concrete is large.
Disclosure of Invention
The double-clamp beam solves the problem that the existing double-clamp beam only adopts section steel or steel bars as wall penetrating members, and the bonding slippage between a single wall penetrating member and concrete is large. The invention aims to provide a double-clamped beam superposed member and a foundation beam underpinning method.
The technical scheme adopted by the invention for solving the technical problems is as follows: a double-clamping beam overlapped component comprises at least two wall-penetrating steel lifting beams which are arranged in parallel and at intervals, wherein each wall-penetrating steel lifting beam comprises:
the I-shaped steel transversely penetrates through the bottom of the underpinned original structure;
the hooping bars are respectively sleeved on the outer sides of the I-shaped steel exposed out of the two ends of the underpinned original structure;
and the longitudinal ribs are arranged along the length direction of the I-shaped steel and are respectively positioned on two sides of the web plate of the I-shaped steel, and the longitudinal ribs are fixedly connected to the inner sides of the stirrups.
The double-sandwich beam superposed component comprises at least two parallel wall-penetrating steel lifting beams which are arranged at intervals, wherein each wall-penetrating steel lifting beam comprises an I-shaped steel which transversely penetrates through the bottom of a underpinned original structure, a plurality of stirrups which are sleeved on the outer sides of exposed ends of the I-shaped steels and a plurality of longitudinal reinforcements which are arranged along the length direction of the I-shaped steel and are respectively positioned on two sides of a web plate of the I-shaped steel, the double-sandwich beam superposed component and the original structure are integrally cast to form an integrally-formed underpinned structure, the stirrups and the longitudinal reinforcements which are arranged in a criss-cross mode increase the friction force between the wall-penetrating steel lifting beam and concrete, the bonding slippage between two materials of the double-sandwich beam superposed component and the concrete is effectively reduced, and the underpinned structure has good shear resistance and integrity, definite force transmission, safety and reliability.
Furthermore, a plurality of longitudinal ribs are symmetrically arranged along the web plate of the I-shaped steel.
Furthermore, a plurality of stirrups are symmetrically arranged along the axis of the underpinned original structure.
Furthermore, the wall-penetrating reinforcing steel bar retaining device also comprises a plurality of wall-penetrating reinforcing steel bars which transversely penetrate through the underpinned original structure, and the plurality of wall-penetrating reinforcing steel bars are arranged in parallel and at intervals along the length direction of the underpinned original structure.
In addition, the invention also provides a foundation beam underpinning method, which comprises the following steps:
the method comprises the following steps of (1) manufacturing at least two wall-penetrating steel lifting beams in advance, sleeving a plurality of stirrups on two sides of an I-shaped steel, erecting a plurality of longitudinal reinforcements on two sides of a web plate of the I-shaped steel along the length direction of the I-shaped steel, and connecting the longitudinal reinforcements to the inner sides of the stirrups;
at least two holes are formed in the bottom of the underpinned original structure, the size of each hole is matched with the size of each through-wall section steel lifting beam, and the at least two through-wall section steel lifting beams are installed at the bottom of the underpinned original structure, so that the at least two through-wall section steel lifting beams respectively penetrate through the corresponding holes in the bottom of the underpinned original structure;
a plurality of wall-penetrating reinforcing steel bars are arranged in parallel along the length direction of the underpinned original structure at intervals and penetrate through the underpinned original structure respectively;
binding steel reinforcement cages of wall clamping beams on two sides of the underpinned original structure, and integrally pouring the underpinned original structure, the wall clamping beams, the wall penetrating steel bars and the wall penetrating steel lifting beams into a whole to form the underpinning structure.
The underpinning method of the foundation beam comprises the steps of prefabricating at least two wall-penetrating steel lifting beams, forming a hole at the bottom of an underpinned original structure, enabling the at least two wall-penetrating steel lifting beams to transversely penetrate through the underpinned original structure, enabling a plurality of wall-penetrating steel bars arranged in parallel and at intervals to transversely penetrate through the underpinned original structure along the length direction, and finally integrally pouring the wall-penetrating steel lifting beams, the wall-penetrating steel bars, the wall-clamping beams and the underpinned original structure into a whole to form the underpinning structure.
Further, the above steps further include: before the wall-through steel lifting beam is installed, roughening is carried out on a joint surface of the underpinned original structure and the wall clamping beam to be poured, and a plurality of strip-shaped grooves which are parallel to each other and arranged at intervals are manufactured in the length direction of the underpinned original structure.
Further, the above steps further include: and after the wall-through steel lifting beam penetrates through the hole at the bottom of the underpinned original structure, building mortar at the gap of the hole for plugging tightly.
Drawings
FIG. 1 is a schematic structural view of a foundation beam underpinned by a wall-penetrating steel lifting beam overlapping member in one embodiment of the present invention;
FIG. 2 is a schematic structural view of a wall-penetrating steel lifting beam according to an embodiment of the present invention;
fig. 3 is a schematic diagram of the underpinning structure of the foundation beam after the underpinning is completed in an embodiment of the present invention.
The numbers in the figures are as follows:
is underpinned to the original structure 1; a strip-shaped groove 2; a wall clamping beam 5; a wall-penetrating steel lifting beam 10; 11 parts of I-shaped steel; a stirrup 12; longitudinal ribs 14; through-wall rebar 20.
Detailed Description
The invention is described in further detail below with reference to the figures and specific examples. It is to be noted that the drawings are in a very simplified form and are not to precise scale, which is merely for the purpose of facilitating and distinctly claiming the embodiments of the present invention. For convenience of description, the directions of "up" and "down" described below are the same as the directions of "up" and "down" in the drawings, but this is not a limitation of the technical solution of the present invention.
In this embodiment, taking a structure underpinning construction for protecting a building foundation beam as an example, the following description will be given with reference to fig. 1 and 2 to describe a double-clamped beam laminated member of the present invention, which includes at least two through-wall type steel lifting beams 10 arranged in parallel and at intervals, wherein each of the through-wall type steel lifting beams 10 includes:
the I-steel 11 transversely penetrates through the bottom of the underpinned original structure 1;
a plurality of stirrups 12 which are respectively sleeved on the outer sides of the I-shaped steel 11 exposed at the two ends of the underpinned original structure 1;
and the longitudinal ribs 14 are arranged along the length direction of the I-shaped steel 11 and are respectively positioned on two sides of the web plate of the I-shaped steel 11, and the longitudinal ribs 14 are fixedly connected to the inner side of the stirrup 12.
The double-sandwich beam superposed component comprises at least two wall-penetrating steel lifting beams 10 which are arranged in parallel and at intervals, wherein each wall-penetrating steel lifting beam 10 comprises an I-shaped steel 11 transversely penetrating through the bottom of a underpinned original structure 1, a plurality of stirrups 12 sleeved on the outer sides of the exposed ends of the I-shaped steel 11 and a plurality of longitudinal ribs 14 arranged along the length direction of the I-shaped steel 11 and respectively positioned on two sides of a web plate of the I-shaped steel 11, the double-sandwich beam superposed component and the original structure are integrally cast to form an integrally-formed underpinning structure, the stirrups 12 and the longitudinal ribs 14 arranged in a criss-cross mode increase the friction force between the wall-penetrating steel lifting beam 10 and concrete, the bonding slippage between two materials of the double-sandwich beam superposed component and the concrete is effectively reduced, and the underpinning structure has good shear resistance and integrity, definite force transmission, safety and reliability.
As shown in fig. 2, the longitudinal ribs 14 are symmetrically arranged along the web of the i-beam 11, and the stirrups 12 are symmetrically arranged along the axis of the underpinned original structure 1, so that the friction between the wall-penetrating steel lifting beam 10 and the concrete of the wall-clamping beams 5 on the two sides is more balanced.
As shown in fig. 1, it also includes a plurality of wall-through rebars 20 transversely penetrating the underpinned original structure 1, the plurality of wall-through rebars 20 are parallel and spaced along the length direction of the underpinned original structure 1, so as to further improve the friction between the double-beam laminated member and the concrete of the double-beam 5. In this embodiment, at least two rows of the through-wall reinforcing bars 20 are disposed, and are respectively located at the upper part and the lower part of the underpinned original structure 1.
The underpinning method of the foundation beam of the invention is explained by combining with figure 1, and comprises the following concrete steps:
as shown in fig. 2, at least two through-wall type steel lifting beams 10 are manufactured in advance, a plurality of stirrups 12 are sleeved on two sides of an i-beam 11, a plurality of longitudinal reinforcements 14 are erected on two sides of a web plate of the i-beam 11 along the length direction of the i-beam 11, and the longitudinal reinforcements 14 are bound and connected to the inner sides of the stirrups 12 through steel wires;
at least two holes are formed in the bottom of the underpinned original structure 1, the size of each hole is matched with the size of each through-wall type steel lifting beam 10, and the at least two through-wall type steel lifting beams 10 are installed at the bottom of the underpinned original structure 1, so that the at least two through-wall type steel lifting beams 10 respectively penetrate through the corresponding holes in the bottom of the underpinned original structure 1;
a plurality of wall-penetrating reinforcing steel bars 20 are arranged in parallel along the length direction of the underpinned original structure 1 at intervals, and the wall-penetrating reinforcing steel bars 20 respectively penetrate through the underpinned original structure 1;
binding reinforcement cages of the wall clamping beams 5 at two sides of the underpinned original structure 1, and integrally pouring the underpinned original structure 1, the wall clamping beams 5, the wall penetrating type steel lifting beams 10 and the wall penetrating steel bars 20 into a whole to form the underpinning structure.
The underpinning method of the foundation beam comprises the steps of prefabricating at least two wall-penetrating steel lifting beams 10, forming a hole in the bottom of an underpinned original structure 1, enabling the at least two wall-penetrating steel lifting beams 10 to transversely penetrate through the underpinned original structure 1, enabling a plurality of wall-penetrating reinforcing steel bars 20 which are parallel to each other and arranged at intervals to transversely penetrate through the underpinned original structure 1 along the length direction, and finally integrally pouring the wall-penetrating steel lifting beams 10, the wall-penetrating reinforcing steel bars 20, the underpinned original structure 1 and wall clamping beams 5 on two sides into a whole to form the underpinning structure, wherein the synergistic effect of the wall-penetrating steel lifting beams 10 and the wall-penetrating reinforcing steel bars 20 effectively reduces bonding slippage between two materials, namely a wall-penetrating component and concrete, the integrity and the anti-shearing performance of the underpinning structure are guaranteed, and a reliable and effective force transmission system is provided.
In the above steps, before installing the through-wall section steel lifting beam 10, the joint surface of the underpinned original structure 1 and the wall clamping beam 5 to be poured is roughened, and a plurality of strip-shaped grooves 2 which are parallel and arranged at intervals are manufactured along the length direction of the underpinned original structure 1, so as to improve the integrity between the new concrete and the old concrete of the joint surface of the wall clamping beam 5 and the original structure.
In the above steps, after the through-wall section steel lifting beam 10 penetrates through the bottom opening of the underpinned original structure 1, mortar is built in the gap of the opening for plugging tightly.
The underpinning construction of the foundation beam listed above is only an example, and the method can also be used for underpinning construction of the bottom of the wall body.
The above description is only for the purpose of describing the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention, and any variations and modifications made by those skilled in the art based on the above disclosure are within the scope of the appended claims.
Claims (7)
1. A double-clamping beam overlapping component is characterized by comprising at least two wall-through section steel lifting beams which are parallel and arranged at intervals, wherein each wall-through section steel lifting beam comprises:
the I-shaped steel transversely penetrates through the bottom of the underpinned original structure;
the hooping bars are respectively sleeved on the outer sides of the I-shaped steel exposed out of the two ends of the underpinned original structure;
and the longitudinal ribs are arranged along the length direction of the I-shaped steel and are respectively positioned on two sides of the web plate of the I-shaped steel, and the longitudinal ribs are fixedly connected to the inner sides of the stirrups.
2. The double-clamped beam overlapping member of claim 1, wherein: a plurality of longitudinal ribs are symmetrically arranged along the web plate of the I-shaped steel.
3. The double-clamped beam overlapping member of claim 1, wherein: the stirrups are symmetrically arranged along the axis of the underpinned original structure.
4. The double-clamped beam overlapping member of claim 1, wherein: it still includes many horizontal wall reinforcing bars that run through by underpinning original structure, and many wall reinforcing bars are along being parallel and the interval setting of underpinning original structure length direction.
5. A foundation beam underpinning method is characterized by comprising the following steps:
the method comprises the steps of prefabricating at least two through-wall steel lifting beams according to claim 1, sleeving a plurality of stirrups on two sides of an I-shaped steel, erecting a plurality of longitudinal reinforcements on two sides of a web plate of the I-shaped steel along the length direction of the I-shaped steel, and connecting the longitudinal reinforcements to the inner sides of the stirrups;
at least two holes are formed in the bottom of the underpinned original structure, the size of each hole is matched with the size of each through-wall section steel lifting beam, and the at least two through-wall section steel lifting beams are installed at the bottom of the underpinned original structure, so that the at least two through-wall section steel lifting beams respectively penetrate through the corresponding holes in the bottom of the underpinned original structure;
a plurality of wall-penetrating reinforcing steel bars are arranged in parallel along the length direction of the underpinned original structure at intervals and penetrate through the underpinned original structure respectively;
binding steel reinforcement cages of wall clamping beams on two sides of the underpinned original structure, and integrally pouring the underpinned original structure, the wall clamping beams, the wall penetrating steel bars and the wall penetrating steel lifting beams into a whole to form the underpinning structure.
6. The foundation beam underpinning method of claim 5, further comprising the steps of: before the wall-through steel lifting beam is installed, roughening is carried out on a joint surface of the underpinned original structure and the wall clamping beam to be poured, and a plurality of strip-shaped grooves which are parallel to each other and arranged at intervals are manufactured in the length direction of the underpinned original structure.
7. The foundation beam underpinning method of claim 5, further comprising the steps of: and after the wall-through steel lifting beam penetrates through the hole at the bottom of the underpinned original structure, building mortar at the gap of the hole for plugging tightly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111398555.2A CN114032975A (en) | 2021-11-24 | 2021-11-24 | Double-clamping beam overlapped component and foundation beam underpinning method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111398555.2A CN114032975A (en) | 2021-11-24 | 2021-11-24 | Double-clamping beam overlapped component and foundation beam underpinning method |
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| CN114032975A true CN114032975A (en) | 2022-02-11 |
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| CN202111398555.2A Pending CN114032975A (en) | 2021-11-24 | 2021-11-24 | Double-clamping beam overlapped component and foundation beam underpinning method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114991521A (en) * | 2022-06-28 | 2022-09-02 | 四川省建筑设计研究院有限公司 | Existing masonry structure underpinning beam shock insulation reinforcing structure and design method thereof |
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| CN106088650A (en) * | 2016-07-19 | 2016-11-09 | 山东建筑大学 | A kind of building with brick-concrete structure underground that is applicable to increases method and the building of layer |
| CN207749638U (en) * | 2017-11-22 | 2018-08-21 | 西安建筑科技大学 | Steel reinforced concrete rectangular column-Special-Shaped Column transfer framework structure and its converting system |
| CN208586936U (en) * | 2018-04-25 | 2019-03-08 | 苏州中固建筑科技股份有限公司 | A kind of control protects brick mixed building joist and demolishes walls constructing device |
| CN211922337U (en) * | 2020-02-19 | 2020-11-13 | 上海先为土木工程有限公司 | Bridge jacking underpins device |
-
2021
- 2021-11-24 CN CN202111398555.2A patent/CN114032975A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106088650A (en) * | 2016-07-19 | 2016-11-09 | 山东建筑大学 | A kind of building with brick-concrete structure underground that is applicable to increases method and the building of layer |
| CN207749638U (en) * | 2017-11-22 | 2018-08-21 | 西安建筑科技大学 | Steel reinforced concrete rectangular column-Special-Shaped Column transfer framework structure and its converting system |
| CN208586936U (en) * | 2018-04-25 | 2019-03-08 | 苏州中固建筑科技股份有限公司 | A kind of control protects brick mixed building joist and demolishes walls constructing device |
| CN211922337U (en) * | 2020-02-19 | 2020-11-13 | 上海先为土木工程有限公司 | Bridge jacking underpins device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114991521A (en) * | 2022-06-28 | 2022-09-02 | 四川省建筑设计研究院有限公司 | Existing masonry structure underpinning beam shock insulation reinforcing structure and design method thereof |
| CN114991521B (en) * | 2022-06-28 | 2023-09-26 | 四川省建筑设计研究院有限公司 | Design method for underpinning Liang Gezhen reinforcement structure of existing masonry structure |
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Application publication date: 20220211 |