CN112593723A - Existing building connecting method - Google Patents
Existing building connecting method Download PDFInfo
- Publication number
- CN112593723A CN112593723A CN202011327015.0A CN202011327015A CN112593723A CN 112593723 A CN112593723 A CN 112593723A CN 202011327015 A CN202011327015 A CN 202011327015A CN 112593723 A CN112593723 A CN 112593723A
- Authority
- CN
- China
- Prior art keywords
- existing building
- fixing
- existing
- section
- main reinforcement
- 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
Links
Images
Classifications
-
- 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
- E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
-
- 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
- E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
- E04G23/0266—Enlarging
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Working Measures On Existing Buildindgs (AREA)
Abstract
The invention discloses a method for connecting an existing building, which comprises the following steps: s1, pre-treating the existing building; the method comprises the following steps of performing chiseling treatment on the upper surface of an existing building, chiseling a protective layer to expose an original main rib, drilling a hole downwards in the upper surface of the existing building, and installing and fixing a water-swelling water stop strip in the hole; s2, constructing a framework above the existing building; welding the lower end of the newly-added main reinforcement with the upper end of the original main reinforcement, and fixing a section steel column above the existing building; s3, erecting a pouring template at the periphery of the framework; and S4, pouring concrete into the pouring template. In this application, not only strengthened new and old junction reinforcing bar connection atress through add shaped steel post between existing building and the new post of last connecing, improved the compression bearing capacity and the shearing bearing capacity of cylinder simultaneously to effectively improved cylinder anti-seismic performance.
Description
Technical Field
The invention relates to the technical field of existing building construction, in particular to a method for connecting an existing building.
Background
A lot of mashed tail building transformation owners can utilize original structure for the biggest cost saving, and this just needs to demolish the transformation to positions such as original post, roof beam, newly-increased stiffening member such as beam column to reach the effect of energy-concerving and environment-protective and benefit pair receipts.
Because newly-increased component and original component junction are not once only pour, and the reinforcing bar is in same cross-section overlap joint, and the kneck easily becomes weak position, no matter be the wholeness or stability can not satisfy the structure safety requirement.
Traditional increase cross section method reinforced column, outer bonding shaped steel reinforced column destroy the whole outward appearance of structure, and the member sectional area can increase, and the cost can increase simultaneously, is unfavorable for owner's cost to control.
Disclosure of Invention
In view of the above disadvantages in the prior art, the present invention is to provide a method for connecting an existing building, which is used to solve the problems of high cost and poor stability of existing building reconstruction in the prior art.
The technical scheme adopted by the invention for solving the technical problem is a method for connecting the existing building, which comprises the following steps:
s1, pre-treating the existing building; the method comprises the following steps of performing chiseling treatment on the upper surface of an existing building, chiseling a protective layer to expose an original main rib, drilling a hole downwards in the upper surface of the existing building, and installing and fixing a water-swelling water stop strip in the hole;
s2, constructing a framework above the existing building; welding the lower end of the newly-added main reinforcement with the upper end of the original main reinforcement, and fixing a section steel column above the existing building;
s3, erecting a pouring template at the periphery of the framework;
and S4, pouring concrete into the pouring template.
Preferably, in step S1, the upper surface of the existing building is excavated to form a plurality of depressions or/and a plurality of protrusions.
Preferably, the length of the original main reinforcement exceeding the upper surface of the existing building is less than or equal to 3.5 cm.
Preferably, in step S2, the section steel column includes an i-steel and a stiffening plate fixed to one end of the i-steel, and the stiffening plate is provided with a through hole for fixing the section steel column to an existing building.
Preferably, each newly-added main rib is fixed with the section steel column through at least one positioning rib.
Preferably, each positioning rib is bent upwards along the peripheral wall of the section steel column to form a fixing part, and each fixing part is welded and fixed with the section steel column.
Compared with the prior art, the invention has at least the following beneficial effects:
in this application, not only strengthened new and old junction reinforcing bar connection atress through add shaped steel post between existing building and the new post of last connecing, improved the compression bearing capacity and the shearing bearing capacity of cylinder simultaneously to effectively improved cylinder anti-seismic performance.
Drawings
FIG. 1 is a flow chart of an existing building connection method in an embodiment;
FIG. 2 is a cross-sectional view of an existing building superstructure in an embodiment;
FIG. 3 is a front view of an embodiment section steel column;
FIG. 4 is a top view of an embodiment of a section steel column;
in the figure:
100. existing buildings;
110. original main reinforcement;
200. a section steel column;
210. i-shaped steel;
220. a stiffening plate;
300. a water-swelling sealing strip when meeting water;
400. a framework;
410. newly adding main ribs;
420. and (5) positioning the ribs.
Detailed Description
The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.
Referring to fig. 1 to 4, the present invention discloses a method for connecting an existing building, including the steps of:
s1, pre-treating the existing building 100; the upper surface of the existing building 100 is roughened, the protective layer is chiseled off, the original main rib 110 is exposed, meanwhile, a hole is drilled downwards in the upper surface of the existing building 100, and a water-swelling water stop strip 300 is fixedly installed in the hole;
s2, constructing a framework 400 above the existing building 100; wherein, the lower end of the newly added main reinforcement 410 is welded with the upper end of the original main reinforcement 110, and the section steel column 200 is fixed above the existing building 100;
s3, erecting a pouring template at the periphery of the framework 400;
and S4, pouring concrete into the pouring template.
In this embodiment, the existing building 100 is first preprocessed, and the preprocessing process includes the steps of roughening the upper surface of the existing building 100, removing the protective layer, and the like, and the main purpose of the preprocessing process is to leak the original main ribs, so as to facilitate the subsequent skeleton 400 construction work.
The purpose of drilling holes downward in the upper surface of the existing building 100 is to prevent water from leaking at the joints of the existing building 100 after the existing building is transformed; specifically speaking, when the untight condition of seam exists in seam crossing, the rainwater can see through the seam crossing downthehole water-swelling sealing rod 300 under its action of gravity, and the gap of seam crossing is filled up after further water-swelling sealing rod 300 expands, avoids the infiltration.
The section steel column 200 is additionally arranged between the existing building 100 and the new column connected to the existing building, so that not only is the connection stress of the steel bars at the new and old joints strengthened, but also the compression bearing capacity and the shear bearing capacity of the column are improved, and the anti-seismic performance of the column is effectively improved.
It should be noted that, in this embodiment, the section steel column 200 is added to implement the top connection of the existing building 100, and a conventional method of implementing the top connection by means of increasing a cross section or the like is eliminated, that is, the construction cost is saved, the appearance is not damaged, and the stability is improved.
In step S1, the upper surface of the existing building 100 is excavated to form a plurality of depressions or/and a plurality of projections.
That is, the worker manually strikes the upper end of the existing building 100 with a hammer and a chisel to form random irregularities on the surface thereof, thereby increasing the roughness of the adhesion interface, and further increasing the contact area between the existing building 100 and the newly-built building to enhance the connection strength.
The length of the original main reinforcement 110 beyond the upper surface of the existing building 100 is less than or equal to 3.5 cm.
In order to ensure the connection strength between the original main rib 110 and the newly added main rib 410, the welding points of two adjacent main ribs need to be staggered, and the joint percentage is less than or equal to 50%; specifically, a certain height section can be preset as the same connecting area, the staggered welding points mean that two adjacent welding points are not located in the same connecting area, and the welding points in the same connecting area are not more than half of the total number of the main ribs of the connecting area.
In step S2, the section steel column 200 includes an i-beam 210 and a stiffening plate 220 fixed to one end of the i-beam 210, and the stiffening plate 220 is provided with a through hole for fixing the section steel column 200 to the existing building 100.
The stiffening plate 220 is connected with the existing building 100 through the expansion bolts, so that the connection strength is ensured.
Each additional main rib 410 is fixed with the section steel column 200 through at least one positioning rib 420.
In this embodiment, four newly-added main ribs 410 are uniformly distributed on the periphery of the section steel column 200, that is, the four newly-added main ribs 410 are fixed to the periphery of the section steel column 200 at the same time, so that the section steel column 200 is prevented from shaking or skewing before being poured.
Each positioning rib 420 is bent upward along the outer peripheral wall of the section steel column 200 to form a fixing portion, and each fixing portion is welded and fixed to the section steel column 200.
Specifically, one end of the positioning rib 420 is fixed to the additional main rib 410, and the other end of the positioning rib is bent to a shape fitting the outer periphery of the section steel column 200 and then welded and fixed thereto, so that the contact area between the positioning rib 420 and the section steel column 200 is increased, and the connection strength is further improved.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.
Claims (6)
1. A method for connecting an existing building, comprising the steps of:
s1, pre-treating the existing building; the method comprises the following steps of performing chiseling treatment on the upper surface of an existing building, chiseling a protective layer to expose an original main rib, drilling a hole downwards in the upper surface of the existing building, and installing and fixing a water-swelling water stop strip in the hole;
s2, constructing a framework above the existing building; welding the lower end of the newly-added main reinforcement with the upper end of the original main reinforcement, and fixing a section steel column above the existing building;
s3, erecting a pouring template at the periphery of the framework;
and S4, pouring concrete into the pouring template.
2. A method for joining an existing building according to claim 1, wherein in step S1, the upper surface of the existing building is chiseled to form a plurality of recesses or/and a plurality of protrusions.
3. A method of joining an existing building according to claim 2, wherein the length of the existing king-bar above the upper surface of the existing building is less than or equal to 3.5 cm.
4. The method as claimed in claim 1, wherein the section bars include i-beams and stiffening plates fixed to one ends of the i-beams, and the stiffening plates are provided with through holes for fixing the section bars to the existing building at step S2.
5. A method as claimed in claim 1 or 4, wherein each additional main reinforcement is secured to the section strut by at least one locating reinforcement.
6. A method of joining existing buildings according to claim 1, wherein each of the tie bars is bent upwardly along the peripheral wall of the section bar to form a fixing portion, and each fixing portion is welded to the section bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011327015.0A CN112593723A (en) | 2020-11-24 | 2020-11-24 | Existing building connecting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011327015.0A CN112593723A (en) | 2020-11-24 | 2020-11-24 | Existing building connecting method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112593723A true CN112593723A (en) | 2021-04-02 |
Family
ID=75184432
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011327015.0A Pending CN112593723A (en) | 2020-11-24 | 2020-11-24 | Existing building connecting method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112593723A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115478706A (en) * | 2022-09-05 | 2022-12-16 | 中建八局第三建设有限公司 | Construction method for widening corridor with cantilever structure |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100828003B1 (en) * | 2006-12-18 | 2008-05-08 | 에스아이비(주) | Reinforcing method of concrete structure |
| CN106401207A (en) * | 2016-10-13 | 2017-02-15 | 浙江杰地建筑设计有限公司 | Superimposed connection structure for additionally arranging column foundation on existing building and construction method of superimposed connection structure |
| CN207377168U (en) * | 2017-11-01 | 2018-05-18 | 中国建筑一局(集团)有限公司 | Add layer steel column base node |
| CN207794658U (en) * | 2017-12-28 | 2018-08-31 | 长兴陆氏钢结构有限公司 | The connection structure of steel column is connect on a kind of reinforced column |
| CN109403631A (en) * | 2018-12-08 | 2019-03-01 | 上海宝冶集团有限公司 | A kind of ground-connecting-wall connect waterproof construction method with original place flowering structure |
| CN208981820U (en) * | 2018-09-30 | 2019-06-14 | 央固工程科技（上海）有限公司 | It is a kind of that rod structure is connect based on former the newly-increased of reinforced column top |
| CN110067311A (en) * | 2019-05-14 | 2019-07-30 | 长江勘测规划设计研究有限责任公司 | The connection structure and method of new-old concrete component junction |
-
2020
- 2020-11-24 CN CN202011327015.0A patent/CN112593723A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100828003B1 (en) * | 2006-12-18 | 2008-05-08 | 에스아이비(주) | Reinforcing method of concrete structure |
| CN106401207A (en) * | 2016-10-13 | 2017-02-15 | 浙江杰地建筑设计有限公司 | Superimposed connection structure for additionally arranging column foundation on existing building and construction method of superimposed connection structure |
| CN207377168U (en) * | 2017-11-01 | 2018-05-18 | 中国建筑一局(集团)有限公司 | Add layer steel column base node |
| CN207794658U (en) * | 2017-12-28 | 2018-08-31 | 长兴陆氏钢结构有限公司 | The connection structure of steel column is connect on a kind of reinforced column |
| CN208981820U (en) * | 2018-09-30 | 2019-06-14 | 央固工程科技（上海）有限公司 | It is a kind of that rod structure is connect based on former the newly-increased of reinforced column top |
| CN109403631A (en) * | 2018-12-08 | 2019-03-01 | 上海宝冶集团有限公司 | A kind of ground-connecting-wall connect waterproof construction method with original place flowering structure |
| CN110067311A (en) * | 2019-05-14 | 2019-07-30 | 长江勘测规划设计研究有限责任公司 | The connection structure and method of new-old concrete component junction |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115478706A (en) * | 2022-09-05 | 2022-12-16 | 中建八局第三建设有限公司 | Construction method for widening corridor with cantilever structure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105386405B (en) | Based on bolted Precast Concrete Segmental Bridges concrete pier of steel tube | |
| CN105735112B (en) | Bolt connection-based rapid assembling precast rectangular concrete filled steel tube bridge pier | |
| CN108505433B (en) | Pier structure and construction method thereof | |
| CN205954921U (en) | Novel big board shear wall structure is secretly supported in bolted connection's prefabricated assembled area | |
| CN102086677A (en) | Prefabricated reinforced concrete beam and connection joint of reinforced concrete column and beam | |
| CN104947684B (en) | Construction method based on assembled recyclable process soil nailing wall support | |
| CN211848855U (en) | Novel swift formula modularization decking seam structure | |
| CN111395390A (en) | Reinforcing structure and method for existing structure opening and new structure connection node | |
| CN104806274A (en) | Large-span long-distance underground space main body supporting integrated structure and construction method | |
| CN108999212A (en) | The template construction method of underground concrete pool wall antiseep | |
| CN104878854A (en) | Prefabricated shear wall horizontal abutted seam buckle welding built-up connection device | |
| CN108775084B (en) | Steel-concrete combined precast beam and precast column connecting structure and construction method | |
| CN106978909A (en) | A kind of method that beams of concrete is connected with profile steel concrete column joint reinforcing bar | |
| CN107355008B (en) | Prefabricated connection structure and method for newly added concrete filled steel tubular column and existing structure | |
| KR200381303Y1 (en) | Form system for joint between retaining wall and slab of basement floor | |
| CN109056710B (en) | Hard stratum steel pipe pile and construction method thereof | |
| CN108797323B (en) | Steel trestle suitable for hard stratum | |
| CN106677340A (en) | Flange plate type precast assembly type concrete hidden bracket dry type connecting system | |
| CN110424548A (en) | A kind of steel core concrete column-arch without beam connecting node and its construction method | |
| CN112593723A (en) | Existing building connecting method | |
| CN112647628B (en) | Assembled external parapet connected node | |
| CN104234443B (en) | A kind of corbel type reinforcement means of steel reinforced concrete member and newly-increased beam | |
| CN211547686U (en) | Prestressed concrete-filled steel tube pipe curtain structure based on prefabricated concrete-filled steel tube connection | |
| CN105274997B (en) | Muscle formula bracket and the method for pushing up road steel pipe support and top board using bracket construction | |
| CN210713925U (en) | Reinforced structure based on frame core section of thick bamboo rearmounted steel construction |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210402 |
|
| RJ01 | Rejection of invention patent application after publication |