CN114135116A - Construction method for enlarging and reinforcing cross section of existing structural beam and reinforcing device - Google Patents
Construction method for enlarging and reinforcing cross section of existing structural beam and reinforcing device Download PDFInfo
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- CN114135116A CN114135116A CN202111293251.XA CN202111293251A CN114135116A CN 114135116 A CN114135116 A CN 114135116A CN 202111293251 A CN202111293251 A CN 202111293251A CN 114135116 A CN114135116 A CN 114135116A
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- 230000003014 reinforcing effect Effects 0.000 title claims abstract description 29
- 238000010276 construction Methods 0.000 title claims abstract description 17
- 230000002787 reinforcement Effects 0.000 claims abstract description 33
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 9
- 238000004873 anchoring Methods 0.000 claims abstract description 9
- 239000010959 steel Substances 0.000 claims abstract description 9
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims abstract description 8
- 238000005553 drilling Methods 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 11
- 238000005452 bending Methods 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 3
- 210000003205 muscle Anatomy 0.000 description 12
- 238000002513 implantation Methods 0.000 description 4
- 238000003466 welding Methods 0.000 description 3
- 239000007943 implant Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005034 decoration Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000011440 grout Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000010561 standard procedure Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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- 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
- E04G23/0218—Increasing or restoring the load-bearing capacity of building construction elements
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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
- E04C3/20—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of concrete or other stone-like material, e.g. with reinforcements or tensioning members
-
- 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
- E04C5/06—Reinforcing elements of metal, e.g. with non-structural coatings of high bending resistance, i.e. of essentially three-dimensional extent, e.g. lattice girders
-
- 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
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/12—Mounting of reinforcing inserts; Prestressing
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Reinforcement Elements For Buildings (AREA)
Abstract
The invention discloses a construction method for increasing and reinforcing the cross section of an existing structural beam and a reinforcing device, which comprise the following steps: s1, chiseling the original main beam; s2, carrying out main bar and waist bar planting on the pillars at the two ends, and staggering the positions of the joints of the adjacent steel bars; s3, anchoring the stirrup into the beam by means of the bar planting: according to a certain distance along the length direction of the main beam, drilling holes in the main beam by avoiding the main bar at the bottom of the main beam, implanting the tops of the U-shaped stirrups of the newly-added section beams into the main beam according to the designed anchoring requirement, and enabling the newly-added section beam U-shaped stirrups to surround the main beam and have a certain gap with the main beam so as to increase the section of the main beam; s4, binding a waist rib; s5, binding main ribs; s6, synchronously constructing the upper hogging moment main reinforcement: the newly-added hogging moment reinforcing steel bars at the beam top are embedded into the floor slab in a buckling mode at the positions, close to the floor slab, of the columns at the two ends, the newly-added inverted-U-shaped stirrups, the hogging moment reinforcing steel bars added to the upper portion can be poured independently, and the cross section of the existing structural beam is enlarged through the steps.
Description
Technical Field
The invention relates to the technical field of construction for enlarging the cross section of an existing structural beam, which is suitable for application of structural reinforcement engineering, in particular to working conditions of upper and lower synchronous operation.
Background
The current common reinforcement mode mainly refers to a drawing set standard method, namely, on the basis of a current beam, stressed steel bars are added at the bottom of the beam, negative bending moment steel bars are added at the top of the plate, and stirrups penetrate through a floor from bottom to top to form a closed hoop.
The method for increasing the section of the conventional structural beam is limited by the construction process, the stirrup needs to pass through a perforated floor slab, then the 90-degree hook processing is carried out manually, and finally the two hooks are subjected to single-side electric welding. Holes need to be formed in the floor slab every 200mm to penetrate through the stirrups, so that the construction process is multiple and the period is long.
Disclosure of Invention
Aiming at the problems and the defects in the prior art, the invention provides a construction method and a reinforcing device for increasing and reinforcing the cross section of an existing structural beam.
The invention solves the technical problems through the following technical scheme:
the invention provides a construction method for enlarging and reinforcing the cross section of an existing structural beam, which is characterized by comprising the following steps of:
s1, chiseling the original main beam: the bottom surface and the side surface of the original main beam are cleaned by small-sized chiseling equipment to remove the surface decorative layer;
s2, carrying out main bar and waist bar planting on the pillars at the two ends: main ribs for increasing the section of the main beam are implanted in advance on the posts at the two ends of the main beam along the width direction of the main beam and at positions corresponding to the lower part of the bottom of the main beam, waist ribs for increasing the section of the main beam are implanted in advance on the posts at the two ends of the main beam along the width direction of the main beam and at two sides corresponding to the lower part of the main beam, main ribs for increasing the section of the main beam are implanted in advance on the posts at the two ends of the main beam along the width direction of the main beam and at two sides corresponding to the upper part of the main beam, and the joint positions of adjacent steel bars are staggered;
s3, anchoring the stirrup into the beam by means of the bar planting: according to a certain distance along the length direction of the main beam, drilling holes in the main beam by avoiding the main bar at the bottom of the main beam, implanting the tops of the U-shaped stirrups of the newly-added section beams into the main beam according to the designed anchoring requirement, and enabling the newly-added section beam U-shaped stirrups to surround the main beam and have a certain gap with the main beam so as to increase the section of the main beam;
s4, binding the waist rib: binding waist bars of newly-added section beams of the main beam, wherein the two ends of the waist bar on the main beam are respectively bound and overlapped with the waist bars at the two ends of the columns with the pre-planted bars;
s5, binding main ribs: binding main ribs of a newly-added section beam of a main beam, wherein two ends of the main rib on the main beam are respectively bound and overlapped with two end main ribs on pillars at two ends of pre-planted ribs, and after the arrangement is completed, a hole can be formed in a floor slab for pouring grouting material;
s6, synchronously constructing the upper hogging moment main reinforcement: and (3) while carrying out the steps S1-S5, additionally arranging negative bending moment reinforcing steel bars at the beam top on the pillars at the two ends and close to the position of the floor slab, and implanting the additionally arranged inverted U-shaped stirrups into the floor slab in a buckling manner, wherein the negative bending moment reinforcing steel bars added at the upper part can be independently poured after the working procedures are finished.
Preferably, in step S3, holes are drilled along the length direction of the main beam at intervals of 100/200mm, and the hoop of the newly added section beam is implanted into the main beam according to the designed anchoring requirement, while keeping away from the main ribs in the main beam along the bottom of the main beam.
Preferably, in step S6, the added reversed U-shaped stirrup is implanted into the floor slab in the form of a buckling bar, and the implantation depth is controlled by 100 mm.
The invention also provides a reinforcing device for increasing and reinforcing the cross section of the existing structural beam, which is characterized by comprising newly-added cross-section beam U-shaped stirrups implanted into the main beam at certain intervals along the length direction of the main beam, wherein the newly-added cross-section beam U-shaped stirrups surround the main beam and have certain gaps with the main beam so as to increase the cross section of the main beam, main reinforcements for increasing the cross section of the main beam are implanted in advance on columns at two ends of the main beam along the width direction of the main beam and at positions corresponding to the lower part of the bottom of the main beam, waist reinforcements for increasing the cross section of the main beam are implanted in advance on columns at two ends of the main beam along the width direction of the main beam and at two sides corresponding to the upper part of the main beam, joints of adjacent reinforcing steel bars are staggered, two ends of the waist reinforcements arranged on the main beam are respectively bound and overlapped with the waist reinforcements at two ends of the columns on which the reinforcements are implanted in advance, the two ends of the main reinforcement arranged on the main beam and the two ends of the main reinforcement on the columns at the two ends of the pre-embedded reinforcement are respectively in binding lap joint, the embedded reinforcement at the positions close to the floor slab on the columns at the two ends is provided with a newly increased negative bending moment reinforcement at the beam top, and a newly increased inverted U-shaped stirrup is implanted into the floor slab.
Preferably, the U-shaped hoops of the newly added section beams are implanted into the main beams at intervals of 100/200mm along the length direction of the main beams.
Preferably, the floor slab is implanted with the newly-added inverted U-shaped stirrup with the implantation depth of 100 mm.
On the basis of the common knowledge in the field, the above preferred conditions can be combined randomly to obtain the preferred embodiments of the invention.
The positive progress effects of the invention are as follows:
1. the newly added section stirrup does not need to form a closed hoop in a mode of slotting on the floor slab, so that the original structure is prevented from being stressed better due to the hole forming of the floor slab;
2. the optimized stirrup planting bars are anchored into the main beam in a U-shaped hoop mode, construction is convenient, construction period is facilitated, and welding operation is omitted;
3. after replacing original cross-section lower part roof beam stirrup and accomplishing, construct upper portion hogging moment reinforcing bar again, reinforcing bar colligation in step about can realizing to the reinforcement mode after the optimization, and the watering goes on simultaneously.
Drawings
Fig. 1 is a schematic view of a construction method for increasing and reinforcing a cross section of an existing structural beam according to a preferred embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
As shown in fig. 1, the present embodiment provides a construction method for increasing and reinforcing a cross section of an existing structural beam, which includes the following steps:
s1, chiseling the original main beam: the bottom surface and the side surface of the original main beam 1 are both cleaned by small-sized chiseling equipment to remove the surface decoration layer.
S2, carrying out main bar and waist bar planting on the pillars at the two ends: the main reinforcement 3 used for increasing the section of the main beam is implanted in advance along the width direction of the main beam 1 on the posts 2 at the two ends of the main beam and corresponds to the position below the bottom of the main beam 1, the waist reinforcement 4 used for increasing the section of the main beam is implanted in advance along the width direction of the main beam 1 on the posts 2 at the two ends of the main beam and corresponds to the two sides of the lower part of the main beam 2, the main reinforcement 5 used for increasing the section of the main beam is implanted in advance along the width direction of the main beam 1 and corresponds to the two sides of the upper part of the main beam 1 on the posts 2 at the two ends of the main beam, and the joint positions of adjacent reinforcements are staggered.
S3, anchoring the stirrup into the beam by means of the bar planting: along the length direction of girder 1 according to 100/200mm interval, keeping away from the drilling of girder 1 interior main muscle along girder 1 bottom, implant girder 1 with newly-increased section roof beam U type stirrup 6's top according to the design anchor requirement in, newly-increased section roof beam U type stirrup 6 surrounds girder 1 and has certain clearance in order to increase girder 1 cross-section with girder 1.
S4, binding the waist rib: the waist bars of the newly-added section beams of the main beam 1 are bound, and the two ends of the waist bar on the main beam 1 are respectively bound and overlapped with the waist bars 4 on the pillars 2 at the two ends of the pre-planted bars.
S5, binding main ribs: the main muscle of the newly-increased section roof beam of ligature girder 1, the both ends of the main muscle on girder 1 and the both ends owner muscle 3, 5 on the both ends post 2 of planting the muscle in advance adopt the ligature overlap joint respectively, can open the hole and pour the grout material on floor 7 after accomplishing above-mentioned arrangement.
S6, synchronously constructing the upper hogging moment main reinforcement: and (3) while carrying out the steps S1-S5, implanting new hogging moment steel bars 8 at the beam top on the pillars 2 at two ends and at positions close to the floor slab 7, implanting the new inverted U-shaped hooping 9 into the floor slab 7 in a buckling manner, wherein the implantation depth is controlled according to 100mm, the hogging moment steel bars added at the upper part can be independently poured after the working procedure is finished, the section of the structural beam can be increased through the steps, and the mark 10 is seen on the section of the structural beam after the increase.
The embodiment also provides a reinforcing device for increasing and reinforcing the cross section of the existing structural beam, which comprises newly-added cross-section beam U-shaped stirrups 6 implanted into the main beam 1 along the length direction of the main beam 1 at intervals of 100/200mm, wherein the newly-added cross-section beam U-shaped stirrups 6 surround the main beam 1 and have certain gaps with the main beam 1 so as to increase the cross section of the main beam, main ribs 3 for increasing the cross section of the main beam are implanted in advance on columns 2 at two ends of the main beam 1 along the width direction of the main beam and at positions corresponding to the lower part of the bottom of the main beam 1, waist ribs 4 for increasing the cross section of the main beam are implanted in advance on the columns 2 at two ends of the main beam along the width direction of the main beam and corresponding to two sides of the upper part of the main beam 1, main ribs 5 for increasing the cross section of the main beam are implanted in advance on the columns 2 at two ends of the main beam and corresponding to two sides of the upper part of the main beam 1, and the joints of adjacent reinforcing bars are staggered, the both ends of the lumbar muscle that is equipped with on the girder 1 and the both ends lumbar muscle 4 on the both ends post 2 of planting the muscle in advance adopt the ligature overlap joint respectively, the both ends of the main muscle that is equipped with on the girder 1 and the both ends main muscle 3 on the both ends post 2 of planting the muscle in advance, 5 adopt the ligature overlap joint respectively, it has the newly-increased negative moment reinforcing bar 8 of roof beam top to just be close to floor 7 position department planting muscle on the post 2 at both ends, it has newly-increased type of falling U stirrup 9 and the implantation depth of depth to implant in the floor 7 is 100 mm.
The invention is the innovation of the existing girder section reinforcing technology, and the stirrups are anchored into the lower side beam by using bar-planting glue, so that the beams with the same section are reinforced up and down simultaneously, and the construction speed is greatly increased.
The invention is further optimized on the basis of reinforcing the section of the traditional main beam, the structural stress is met, meanwhile, the construction process is simplified, and the node method is suitable for increasing the section of the existing beam, so that the aim of improving the integral bearing capacity of the structure is fulfilled.
The beam section reinforcing mode is innovative, the stirrups are directly anchored into the side faces of the beam in the current situation, no groove is needed to be formed in the floor slab to meet the condition of sleeving the stirrups, the process of secondary bending and welding of the reinforcing steel bars is omitted, and the upper part and the lower part of the floor slab can be simultaneously bound with the reinforcing steel bars and poured with concrete. By applying the node method, construction tasks such as bent erection, reinforcement binding, pouring, bent dismantling and the like of 96 400x1000mm section beams are completed within 20 days on site.
While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that these are by way of example only, and that the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and scope of the invention, and these changes and modifications are within the scope of the invention.
Claims (6)
1. A construction method for increasing and reinforcing the section of an existing structural beam is characterized by comprising the following steps:
s1, chiseling the original main beam: the bottom surface and the side surface of the original main beam are cleaned by small-sized chiseling equipment to remove the surface decorative layer;
s2, carrying out main bar and waist bar planting on the pillars at the two ends: main ribs for increasing the section of the main beam are implanted in advance on the posts at the two ends of the main beam along the width direction of the main beam and at positions corresponding to the lower part of the bottom of the main beam, waist ribs for increasing the section of the main beam are implanted in advance on the posts at the two ends of the main beam along the width direction of the main beam and at two sides corresponding to the lower part of the main beam, main ribs for increasing the section of the main beam are implanted in advance on the posts at the two ends of the main beam along the width direction of the main beam and at two sides corresponding to the upper part of the main beam, and the joint positions of adjacent steel bars are staggered;
s3, anchoring the stirrup into the beam by means of the bar planting: according to a certain distance along the length direction of the main beam, drilling holes in the main beam by avoiding the main bar at the bottom of the main beam, implanting the tops of the U-shaped stirrups of the newly-added section beams into the main beam according to the designed anchoring requirement, and enabling the newly-added section beam U-shaped stirrups to surround the main beam and have a certain gap with the main beam so as to increase the section of the main beam;
s4, binding the waist rib: binding waist bars of newly-added section beams of the main beam, wherein the two ends of the waist bar on the main beam are respectively bound and overlapped with the waist bars at the two ends of the columns with the pre-planted bars;
s5, binding main ribs: binding main ribs of a newly-added section beam of a main beam, wherein two ends of the main rib on the main beam are respectively bound and overlapped with two end main ribs on pillars at two ends of pre-planted ribs, and after the arrangement is completed, a hole can be formed in a floor slab for pouring grouting material;
s6, synchronously constructing the upper hogging moment main reinforcement: and S1-S5 are carried out, simultaneously, newly added hogging moment steel bar embedded bars at the beam top are arranged on the pillars at the two ends and close to the position of the floor slab, newly added inverted-U-shaped stirrups are embedded into the floor slab in a buckling bar mode, and the hogging moment steel bars added at the upper part can be independently poured after the procedures are finished.
2. The method of constructing a cross-section-enlarging reinforcement for an existing structural beam as claimed in claim 1, wherein in step S3, holes are drilled along the length of the main beam at intervals of 100/200mm against the bottom of the main beam to avoid the main ribs in the main beam, and the beam stirrups of the newly added cross-section are implanted into the main beam according to the designed anchoring requirements.
3. The construction method for enlarging and reinforcing the section of an existing structural beam according to claim 1, wherein in step S6, the newly added inverted U-shaped stirrup is embedded in the slab in the form of a buckling bar, and the embedding depth is controlled to be 100 mm.
4. A reinforcing device for increasing and reinforcing the section of an existing structural beam is characterized by comprising newly-added section beam U-shaped stirrups which are implanted into a main beam at a certain interval along the length direction of the main beam, wherein the newly-added section beam U-shaped stirrups surround the main beam and have a certain gap with the main beam so as to increase the section of the main beam, main reinforcements for increasing the section of the main beam are pre-implanted on columns at two ends of the main beam along the width direction of the main beam and at positions corresponding to the lower part of the main beam, waist reinforcements for increasing the section of the main beam are pre-implanted on columns at two ends of the main beam along the width direction of the main beam and at two sides corresponding to the upper part of the main beam, joints of adjacent reinforcing steel bars are staggered, two ends of the waist reinforcements arranged on the main beam are respectively bound and overlapped with the waist reinforcements at two ends of the columns at two ends of the pre-implanted reinforcements, the two ends of the main reinforcement arranged on the main beam and the two ends of the main reinforcement on the columns at the two ends of the pre-embedded reinforcement are respectively in binding lap joint, the embedded reinforcement at the positions close to the floor slab on the columns at the two ends is provided with a newly increased negative bending moment reinforcement at the beam top, and a newly increased inverted U-shaped stirrup is implanted into the floor slab.
5. A reinforcing apparatus for increasing the cross-section of an existing structural beam, as claimed in claim 4, wherein U-shaped stirrups of the newly added cross-section beam are embedded in the main beam at intervals of 100/200mm along the length of the main beam.
6. A reinforcing apparatus for increasing the cross-section of an existing structural beam to reinforce it as claimed in claim 4, wherein the floor slab has embedded therein additional inverted U-shaped reinforcing bars to a depth of 100 mm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111293251.XA CN114135116A (en) | 2021-11-03 | 2021-11-03 | Construction method for enlarging and reinforcing cross section of existing structural beam and reinforcing device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111293251.XA CN114135116A (en) | 2021-11-03 | 2021-11-03 | Construction method for enlarging and reinforcing cross section of existing structural beam and reinforcing device |
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| CN114135116A true CN114135116A (en) | 2022-03-04 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115506623A (en) * | 2022-10-14 | 2022-12-23 | 北京房地集团有限公司 | Reinforcing method for enlarged cross section of lower structural beam of existing wall |
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| JPH1096294A (en) * | 1996-09-24 | 1998-04-14 | Kawasaki Steel Corp | Steel frame and reinforced concrete beam |
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| CN202324351U (en) * | 2011-11-21 | 2012-07-11 | 华汇工程设计集团股份有限公司 | Openable stirrup of superposed beam |
| CN104264899A (en) * | 2014-10-17 | 2015-01-07 | 上海天华建筑设计有限公司 | Embedded U-shaped steel-encased concrete combined beam |
| CN104847130A (en) * | 2015-05-19 | 2015-08-19 | 江苏南通三建集团有限公司 | Reinforcing structure of existing structural beam and construction method thereof |
| CN207673040U (en) * | 2017-12-22 | 2018-07-31 | 江苏意统加固行工程有限公司 | It a kind of three face of increasing section beam encloses set and reinforces ring beam U hoop constructions |
| CN110878641A (en) * | 2019-12-10 | 2020-03-13 | 赵枫 | Reinforcing structure adopting superimposed hollow floor slab grid system and new construction method |
| CN212105238U (en) * | 2020-01-22 | 2020-12-08 | 同济大学建筑设计研究院(集团)有限公司 | Bending-resistant reinforced floor slab |
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2021
- 2021-11-03 CN CN202111293251.XA patent/CN114135116A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06158863A (en) * | 1992-11-19 | 1994-06-07 | Kajima Corp | Method for constructing concrete frame |
| JPH1096294A (en) * | 1996-09-24 | 1998-04-14 | Kawasaki Steel Corp | Steel frame and reinforced concrete beam |
| JP2011021313A (en) * | 2009-07-13 | 2011-02-03 | Tis&Partners Co Ltd | Seismic strengthening member |
| CN202324351U (en) * | 2011-11-21 | 2012-07-11 | 华汇工程设计集团股份有限公司 | Openable stirrup of superposed beam |
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| CN104847130A (en) * | 2015-05-19 | 2015-08-19 | 江苏南通三建集团有限公司 | Reinforcing structure of existing structural beam and construction method thereof |
| CN207673040U (en) * | 2017-12-22 | 2018-07-31 | 江苏意统加固行工程有限公司 | It a kind of three face of increasing section beam encloses set and reinforces ring beam U hoop constructions |
| CN110878641A (en) * | 2019-12-10 | 2020-03-13 | 赵枫 | Reinforcing structure adopting superimposed hollow floor slab grid system and new construction method |
| CN212105238U (en) * | 2020-01-22 | 2020-12-08 | 同济大学建筑设计研究院(集团)有限公司 | Bending-resistant reinforced floor slab |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115506623A (en) * | 2022-10-14 | 2022-12-23 | 北京房地集团有限公司 | Reinforcing method for enlarged cross section of lower structural beam of existing wall |
| CN115506623B (en) * | 2022-10-14 | 2023-10-31 | 北京房地集团有限公司 | Reinforcing method for expanding section of existing wall lower structural beam |
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