CN115324343A - Construction method for embedding large anti-radiation steel plate in shear wall - Google Patents
Construction method for embedding large anti-radiation steel plate in shear wall Download PDFInfo
- Publication number
- CN115324343A CN115324343A CN202211087935.9A CN202211087935A CN115324343A CN 115324343 A CN115324343 A CN 115324343A CN 202211087935 A CN202211087935 A CN 202211087935A CN 115324343 A CN115324343 A CN 115324343A
- Authority
- CN
- China
- Prior art keywords
- steel plate
- steel
- concrete
- cavity
- hoisting
- 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
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 271
- 239000010959 steel Substances 0.000 title claims abstract description 271
- 238000010276 construction Methods 0.000 title claims abstract description 45
- 230000003471 anti-radiation Effects 0.000 title description 2
- 239000004567 concrete Substances 0.000 claims abstract description 60
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 10
- 238000004519 manufacturing process Methods 0.000 claims abstract description 9
- 238000004140 cleaning Methods 0.000 claims abstract description 6
- 230000011218 segmentation Effects 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 16
- 230000002787 reinforcement Effects 0.000 claims description 12
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 11
- 238000013461 design Methods 0.000 claims description 8
- 238000003466 welding Methods 0.000 claims description 8
- 238000009434 installation Methods 0.000 claims description 7
- 238000009415 formwork Methods 0.000 claims description 6
- 230000005855 radiation Effects 0.000 claims description 5
- 230000000903 blocking effect Effects 0.000 claims description 4
- 238000005520 cutting process Methods 0.000 claims description 4
- 238000012545 processing Methods 0.000 claims description 4
- 238000005266 casting Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 10
- 229910052742 iron Inorganic materials 0.000 abstract description 5
- 238000005516 engineering process Methods 0.000 description 4
- 238000009933 burial Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
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
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/01—Flat foundations
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/045—Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/38—Connections for building structures in general
- E04B1/41—Connecting devices specially adapted for embedding in concrete or masonry
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
- E04B2/84—Walls made by casting, pouring, or tamping in situ
-
- 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
- E04G11/00—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs
- E04G11/06—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for walls, e.g. curved end panels for wall shutterings; filler elements for wall shutterings; shutterings for vertical ducts
-
- 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
- E04G13/00—Falsework, forms, or shutterings for particular parts of buildings, e.g. stairs, steps, cornices, balconies foundations, sills
- E04G13/04—Falsework, forms, or shutterings for particular parts of buildings, e.g. stairs, steps, cornices, balconies foundations, sills for lintels, beams, or transoms to be encased separately; Special tying or clamping means therefor
-
- 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
- E04G17/00—Connecting or other auxiliary members for forms, falsework structures, or shutterings
-
- 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
- E04G17/00—Connecting or other auxiliary members for forms, falsework structures, or shutterings
- E04G17/005—Strips for covering joints between form sections, e.g. to avoid burring or spilling of laitance
-
- 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
- E04G17/00—Connecting or other auxiliary members for forms, falsework structures, or shutterings
- E04G17/14—Bracing or strutting arrangements for formwalls; Devices for aligning forms
-
- 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
- E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
-
- 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
- E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
- E04G21/06—Solidifying concrete, e.g. by application of vacuum before hardening
-
- 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
- E04G21/14—Conveying or assembling building elements
-
- 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
- E04G21/14—Conveying or assembling building elements
- E04G21/16—Tools or apparatus
-
- 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
- E04G21/14—Conveying or assembling building elements
- E04G21/16—Tools or apparatus
- E04G21/162—Handles to carry construction blocks
-
- 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
- E04G21/14—Conveying or assembling building elements
- E04G21/16—Tools or apparatus
- E04G21/163—Jacks specially adapted for working-up building elements
-
- 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
- E04G21/14—Conveying or assembling building elements
- E04G21/16—Tools or apparatus
- E04G21/167—Tools or apparatus specially adapted for working-up plates, panels or slab shaped building elements
-
- 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
- E04G21/14—Conveying or assembling building elements
- E04G21/16—Tools or apparatus
- E04G21/18—Adjusting tools; Templates
-
- 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
- E04G21/14—Conveying or assembling building elements
- E04G21/16—Tools or apparatus
- E04G21/18—Adjusting tools; Templates
- E04G21/1841—Means for positioning building parts or elements
- E04G21/185—Means for positioning building parts or elements for anchoring elements or elements to be incorporated in the structure
Abstract
The invention discloses a construction method for embedding a large radiation-proof steel plate in a shear wall, which comprises the following steps of S1, steel plate segmentation; s2, manufacturing a pre-buried cavity; s3, removing the template and cleaning a cavity; s4, positioning and paying off a large steel plate; s5, conveying the embedded steel plates into a field, and hoisting and splicing the embedded steel plates in a staggered joint manner; s6, transversely reinforcing; s7, pouring concrete, wherein the large steel plate is produced in a block mode in advance, a cavity is reserved after the large steel plate is produced, and a pre-buried steel plate base is poured, so that the operability of the hoisting pre-buried safety and precision of the large steel plate is improved, the integral forming quality of a concrete structure is improved, and the hoisting stability and safety of the super-thick heavy iron block are improved due to the manufacturing of the pre-buried cavity.
Description
Technical Field
The invention relates to the field of repair of civil and tourist buildings, in particular to a construction method for embedding a large radiation-proof steel plate in a shear wall.
Background
With the rapid development of world medical science and technology, in the field of medical treatment and health, along with the emergence of medical equipment with high technology and new functions, the design form and material combination of the traditional building structure are difficult to meet the requirements of related medical facilities, and in order to meet the use of equipment functions and improve the use effect, the building structure itself needs to adopt some new technologies and construction processes from the composition of building materials.
In a medical building project, in order to meet the safe use requirement of radiation protection of heavy ion medical facilities and equipment, the structural design changes the conventional selection of structural materials, and a new technology of embedding large steel plates is adopted in the limited size of a shear wall structure, and particularly, the large size and weight of embedded iron blocks with the thickness of 900mm and 150mm in the shear wall structure bring certain challenges to the transportation, hoisting and fixing, concrete formwork pouring and other construction processes. .
Disclosure of Invention
The invention aims to provide a construction method for embedding a large radiation-proof steel plate in a shear wall aiming at the defects of the prior art.
The technical scheme adopted by the invention for solving the technical problems is as follows: the construction method for embedding the large radiation-proof steel plate in the shear wall comprises the following steps:
s1, steel plate segmentation: dividing a large steel plate to be embedded into small steel plates meeting the requirements of allocation, transportation, splicing and installation;
s2, manufacturing a pre-buried cavity: the shear wall at the corresponding position of the large steel plate is cast with concrete, a concrete cavity with certain size is enlarged according to the bottom elevation reserved at the later stage and the steel plate embedded bottom elevation during casting construction, and the positions of the reinforcing steel bars are adjusted under the condition that the number of reinforcing steel bars is not changed during the reinforcing steel bar binding construction of the shear wall, so that the supporting and the reinforcement of a cavity template are facilitated;
s3, template dismantling and cavity cleaning: after the cavity pouring concrete meets the mould removing condition, removing the template in the cavity in time, and cutting the template screw on the inner wall of the cavity;
s4, positioning and paying off of the large steel plate: after the cavity is chiseled and cleaned, positioning and paying off are carried out according to the hoisting and pre-embedding positions and sizes of the steel plates after the large steel plates are subjected to staggered joint and blocking, and positioning base plates are welded at the bottoms of the sides of the cavity according to the side line positions of the side steel plates;
s5, conveying and entering the embedded steel plates, and hoisting and splicing the embedded steel plates in a staggered joint manner: after the whole large steel plate is optimized into a single small steel plate, the large steel plate is transported to a field and lifted on site in a grading manner, firstly, the side steel plate is lifted through a positioning backing plate, and after the subsequent steel plates which are sequentially lifted are adjusted on the side steel plate, the position of the abutted seam on the upper surface is fixedly connected with the fixed steel plate through welding;
s6, transverse reinforcement: in the hoisting and splicing process of the single steel plate, after the steel plates are attached in place by an auxiliary tool, transverse welding reinforcement is carried out, and finally after the hoisting of the side steel plate is finished, the steel plate and the side wall of the cavity are tightly jacked and fixed at the bottom by the wedge-shaped metal steel block;
s7, pouring concrete: and (3) carrying out concrete pouring construction in the cavity of the hoisted steel plate, wherein the concrete pouring needs to be carried out uniformly in the cavity around the steel plate and reinforced and vibrated in times.
Preferably, in S1, the size of a large steel plate needing pre-embedding is 900 \10005 \, 10000 \10005 \, 4000 (H), the large steel plate is divided into small steel plates by adopting a transverse staggered joint block production mode, and the size of the small steel plates is 100 \10005 \, 1250 \10005 \, 4000 (H) and 100 \10005 \, 2500 \10005 \, 4000 (H) or the like.
Preferably, in S3, when the screw rod is cut, a screw rod with the length of 5cm is reserved at the bottom of each outer small steel plate and at the two ends of the upper edge respectively, and the screw rod is used for auxiliary positioning and connection fixing of hoisting of the small steel plates in the later period.
Preferably, in S5, utilize the tight device in top to push up the tight positioning backing plate that laminates with the steel sheet, after adjusting good straightness that hangs down, utilize the reinforcing bar to carry out welded fastening with the steel sheet upper edge with the 5cm screw rod that both ends reserved in advance, accomplish the installation of side steel sheet.
Preferably, S5 further comprises the steps of:
s51, positioning and paying off of the small steel plate: marking the positions and elevations of the embedded steel plates according to a design drawing on site, marking the external wall steel bars and the poured external wall surface, and positioning and paying off according to the embedded positions of the fixed support in the construction scheme;
s52, I-shaped steel frame processing: the I-shaped steel is thicker than the small steel plate, each side is widened by 3 cm, and the I-shaped steel is welded to form a frame according to requirements;
s53, pre-burying and reinforcing I-shaped steel: after the binding of the wall body reinforcing steel bars is finished, accurately hoisting and welding the frame on the wall body reinforcing steel bars according to the paying-off position;
s54, pouring the pre-buried concrete of the I-shaped steel: stay and establish concrete base, when concreting, need strengthen the vibration in I-steel department, guarantee that this department concrete is close, concrete base length and width are: 4200mm and 800mm;
s55, hoisting small steel plates: and after the I-shaped steel is embedded and finished, the concrete is poured to the required elevation, and the strength of the poured concrete base meets the steel plate hoisting requirement, carrying out small steel plate hoisting construction, and hoisting the whole small steel plate into the I-shaped steel gap.
Preferably, in S6, after the steel plate is hoisted, the i-steel at the upper opening of the steel plate is fixed, the 600mm long i-steel is adopted, and two ends of the i-steel upright are welded, so that the i-steels at two sides of the steel plate are connected into a whole, the stability of the steel plate is enhanced, and the transverse reinforcement effect is achieved.
Preferably, in S7, after the hoisting and fixing of the embedded steel plates are completed, formwork erection and pouring are carried out on the haunched beam concrete, and the vibration of the concrete around the I-shaped steel is enhanced when the concrete is poured.
Compared with the prior art, the invention has the beneficial effects that:
1. the iron blocks with small size and weight can effectively solve the problems of transportation and hoisting by dividing the super-thick embedded large steel plate.
2. The stability and the safety of hoisting the super-thick heavy iron block are improved by the working procedure method of reserving the cavity and hoisting the super-thick heavy iron block.
3. The position of the steel plate cavity is enlarged and optimized, the requirements of steel plate positioning and hoisting fixing construction are met, and the operability of the position precision of the embedded steel plate is effectively improved.
4. The embedded steel plate is hoisted and fixed in a cavity of the shear wall after construction is completed, and the difficult problem that formwork bolts cannot be oppositely pulled and reinforced due to the fact that large steel plate formwork bolts are embedded in the cast-in-place concrete shear wall is effectively solved through optimization of construction procedures.
5. The construction method of pre-burying the positioning I-shaped steel support and then hoisting the steel plate is adopted in the large pre-buried steel plate construction, and the problems that the construction surface of the basement outer wall is limited and pre-buried safety and stability are improved are effectively solved.
6. The bottom elevation of the large-scale embedded steel plate is higher than that of the haunched beam bottom, the haunched beam is only cast by locally embedding the steel plate base, and the haunched beam reinforced concrete is integrally and synchronously cast in the later period, so that the forming quality of the haunched beam is ensured.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic diagram of a shear wall designed with a large pre-embedded steel plate
FIG. 2 is a large sample view of a large steel plate in staggered joint and blocking;
FIG. 3 is a plan view of the pre-buried cavity;
FIG. 4 is a steel plate hoisting splicing flow chart;
FIG. 5 is a drawing of an I-beam frame;
FIG. 6 is a layout view of an I-steel pre-buried plane;
FIG. 7 is a layout view of an I-steel pre-embedded vertical surface;
FIG. 8 is a schematic view of the height of concrete placement and the base
FIG. 9 is a connection view of the end portions of I-beams on two sides.
Detailed Description
The technical solution of the present invention is described in detail below with reference to the accompanying drawings, but the scope of the present invention is not limited to the embodiments.
Referring to the drawings and fig. 1 to 9, a construction method for embedding a large radiation protection steel plate in a shear wall includes the following steps:
s1, steel plate segmentation: the heavy steel plate (also called as shielding steel plate) with the project design size of 900 \10005,10000 \10005,4000 (H) is embedded in the cast-in-place concrete shear wall with the thickness of 2.6 meters, the size of a single embedded steel plate is huge, the total weight reaches about 280T, and the transportation and hoisting of the whole embedded steel plate can not be realized by field mechanical equipment.
According to the use function requirements of a building structure, the steel plates are embedded to avoid transverse straight joints, the steel plate embedding construction process is optimized, a large steel plate is divided into a plurality of small-size steel plates of 100 \10005, 1250 \10005, 4000 (H) and 100 \10005, 2500 \10005and4000 (H) in a transverse staggered joint and block production mode, the size and the weight of a single embedded steel plate are reduced, and on-site mechanical equipment meets the steel plate transportation and hoisting conditions;
s2, manufacturing a pre-buried cavity: the shear wall at the corresponding position of the large steel plate is cast by concrete, a concrete cavity with the bottom elevation being as high as the embedded bottom elevation of the steel plate is reserved according to the later period during casting construction, the cavity concrete foundation is used as a base for hoisting the steel plate at the later period to ensure the bearing safety, in order to facilitate the adjustment construction of accurate hoisting and embedding of the partitioned steel plate at the later period, the plane size of the concrete cavity is enlarged by 10 centimeters, the influence of the embedded large steel plate on the steel bar construction of the shear wall is considered, the steel bar position is required to be adjusted according to the size of the reserved cavity without changing the number of the reinforcing bars during the steel bar binding construction of the shear wall, and the supporting and the reinforcement of a cavity template are facilitated;
s3, template dismantling and cavity cleaning: after the cavity concreting satisfies the stripping condition, the template in the cavity is timely removed, and the cutting of the template screw rod on the inner wall of the cavity is carried out, so that the screw rod with the length of 5cm is reserved at the bottom of each small outer steel plate and at the two ends of the upper edge respectively, and the auxiliary positioning and connection fixing device is used for later-stage steel plate hoisting. And (4) according to the hoisting and embedding position and elevation of the steel plate, chiseling and leveling the periphery and the bottom of the cavity and cleaning the cavity.
S4, positioning and paying off a large steel plate: after the cavity picking and chiseling is finished, positioning and paying off are carried out according to the positions and sizes of the hoisting and embedding of the steel plates after the large-scale steel plates are subjected to staggered joint and blocking, and the subsequent determination of the hoisting positions of the steel plates with different sizes is facilitated. According to the sideline position of the side steel plate, a positioning base plate is welded at the bottom of the side of the cavity and used for assisting the steel plate to be installed, tightly pushed and positioned;
s5, conveying and entering the embedded steel plates, and hoisting and splicing the embedded steel plates in a staggered joint manner: after the whole large-scale embedded steel plate is optimized into a single small steel plate, the conditions of graded transportation approach and field hoisting and installation are met, and staggered seam hoisting and splicing are sequentially completed by field root paying-off positioning and positions of steel plates with different sizes.
When the small steel plates on the side edges are hoisted, the steel plates are tightly jacked and attached to the positioning base plate by the jacking device after the position is adjusted, and after the verticality is adjusted, the upper edges of the steel plates and the 5cm short screw rods reserved at the two ends in advance are welded and fixed by the steel bars, so that the steel plates are prevented from inclining in the subsequent hoisting construction process. The follow-up little steel sheet of hoisting in proper order is connected fixedly through welding and fixed steel sheet in the position of upper surface patchwork after position adjustment is accomplished, and the hoist and mount installation of little steel sheet is as follows:
s51, positioning and paying off of small steel plates: this design 150mm thick pre-buried steel sheet is located basement outer wall and adds the armpit roof beam in, and the steel sheet specification is: marking the positions and elevations of pre-embedded steel plates according to design drawings on site, marking the outer wall steel bars and the poured outer wall surfaces, and positioning and setting out according to the pre-embedded positions of the fixing supports in the construction scheme;
s52, I-shaped steel frame processing: because the height of the pre-buried shielding steel plate is 3432mm, the length of the pre-buried shielding steel plate is 4000mm, and the burial depth of the I-steel is considered, the processing length of the No. 12I-steel needs to reach 6500mm, the burial depth of concrete can reach 2310mm, and in order to ensure that the 150mm steel plate can be smoothly hoisted in the later period, the thickness of each side of the I-steel is widened by 3 centimeters compared with that of the steel plate. In addition, because the hidden columns exist at the 150mm steel plate of the project, the distance between the steel bars of the hidden columns is small, and the I-shaped steel is difficult to embed, the I-shaped steel is not embedded at the hidden columns, the distances between the I-shaped steel at other positions are properly encrypted, and the distances are arranged according to the distance of 400 mm. The square steel is welded to form a fixed frame as required, so that subsequent integral hoisting and fixing are facilitated;
s53, pre-burying and reinforcing I-shaped steel: after the binding of wall body reinforcing bar is accomplished, with the frame according to the accurate hoist and mount welded fastening of unwrapping wire position on the wall body reinforcing bar, need notice during fixed: the perpendicularity needs to be strictly controlled, and if the I-shaped steel inclines too much, the hoisting of the shielding steel plate is influenced; when the I-steel is embedded, accurate positioning is needed, and the embedded elevation is strictly controlled.
S54, pouring the pre-buried concrete of the I-shaped steel: stay and establish concrete base, when concreting, need strengthen the vibration in I-steel department, guarantee that this department concrete is close, concrete base length and width are: 4200mm and 800mm;
s55, hoisting small steel plates: after the I-steel is reserved, the concrete is poured to the required elevation, and the pouring strength of the concrete base meets the steel plate hoisting requirement, hoisting the shielding steel plate into an I-steel gap in a whole, cutting off the steel plate hoisting influencing the connecting side, breaking off the hidden column stirrups and the like at the position where the hidden column stirrups conflict with the steel plate, and welding the stirrups on the steel plate;
s6, transverse reinforcement: in the hoisting and splicing process of a single steel plate, the steel plates are attached in place through an auxiliary tool and then transversely welded and reinforced, finally, after the hoisting of the side steel plate is finished, the steel plate and the side wall of the cavity are tightly propped and fixed at the bottom through a wedge-shaped metal steel block, the auxiliary tool, namely the reinforcing method, is used for fixing I-shaped steel at the upper opening of the steel plate after the hoisting of the steel plate is finished, and the two ends of the vertical rod of the I-shaped steel are welded by adopting long I-shaped steel with the length of 600mm, so that the I-shaped steel at two sides of the steel plate are connected into a whole, and the stability is enhanced;
s7, pouring concrete: after the pre-buried steel plate is hoisted and fixed, the haunched beam concrete can be subjected to formwork erection and pouring, and when the concrete is poured, the vibration of concrete in cavities around the steel plate and the concrete around the I-shaped steel needs to be enhanced, so that the structural concrete forming quality is improved.
The process principle of the invention is as follows:
1. according to the design size of the embedded steel plate, concrete pouring is completed on the shear wall at the corresponding position of the large-scale steel plate component with the thickness of 900mm, when pouring is conducted, according to the requirement of later-stage steel plate hoisting embedded construction, a bottom elevation which is the same as the steel plate embedded bottom elevation is reserved, and a concrete cavity with a certain size is relatively enlarged in the plane size, so that the adjustment of the positioning precision of the later-stage steel plate component is facilitated.
2. Through adjusting the construction procedures of the cast-in-place concrete shear wall and the steel plate hoisting, the pre-buried bearing foundation of the steel plate is poured in advance, and a series of difficult problems of difficult control of stability, difficult guarantee of safety, difficult implementation of operability and the like in the fixation of the ultra-heavy pre-buried steel plate support are solved.
3. The method is characterized in that a large steel plate is divided into small steel plates meeting the requirements of allocation, transportation and splicing installation by a manufacturer coordinating the embedded steel plates according to the limiting conditions of on-site actual construction hoisting machinery in the component production process, and the divided small size achieves the purpose of meeting the requirements of on-site construction machinery hoisting staggered joint splicing.
4. Considering that the vertical face of a pre-buried 900mm thick steel plate in the cast-in-place concrete shear wall is large in size, the shear wall template screw cannot penetrate through the thick steel plate for tie reinforcement, and the template pull rod is welded to the pre-buried steel plate spliced in a staggered joint, so that the safety and stability are difficult to guarantee.
5. The pre-buried position of 150mm steel sheet is in basement armpit roof beam, and pre-buried steel sheet bottom elevation adds the armpit roof beam bottom elevation above, adds that the armpit roof beam arrangement of reinforcement structure is complicated, for improving reinforcing bar construction, concrete placement integrated into one piece quality, takes the I-steel fixed bolster of pre-buried steel sheet in advance, carries out the hoist and mount of steel sheet and the pre-buried construction process of concrete placement again, at pre-buried I-steel fixed bolster's in-process, adds the interior local pouring steel sheet concrete base of armpit roof beam to the pre-buried elevation of steel sheet.
As above, while the invention has been shown and described with reference to certain preferred embodiments, it is not to be construed as limited thereto. Various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (7)
1. The construction method for embedding the large radiation-proof steel plate in the shear wall is characterized by comprising the following steps of:
s1, steel plate segmentation: dividing a large steel plate to be embedded into small steel plates meeting the requirements of allocation, transportation, splicing and installation;
s2, manufacturing a pre-buried cavity: the shear wall at the corresponding position of the large steel plate is cast with concrete, a concrete cavity with certain size is enlarged according to the bottom elevation reserved at the later stage and the steel plate embedded bottom elevation during casting construction, and the positions of the reinforcing steel bars are adjusted under the condition that the number of reinforcing steel bars is not changed during the reinforcing steel bar binding construction of the shear wall, so that the supporting and the reinforcement of a cavity template are facilitated;
s3, template dismantling and cavity cleaning: after the cavity pouring concrete meets the mould removing condition, removing the template in the cavity in time, and cutting the template screw on the inner wall of the cavity;
s4, positioning and paying off a large steel plate: after the cavity chiseling and cleaning is finished, positioning and paying off are carried out according to the hoisting and embedding positions and sizes of the steel plates after the large steel plates are subjected to staggered joint and blocking, and positioning base plates are welded at the bottoms of the side edges of the cavity according to the side line positions of the side edge steel plates;
s5, conveying and entering the embedded steel plates, and hoisting and splicing the embedded steel plates in a staggered joint manner: after the whole large steel plate is optimized into a single small steel plate, the large steel plate is transported to a field and lifted on site in a grading manner, firstly, the side steel plate is lifted through a positioning backing plate, and after the subsequent steel plates which are sequentially lifted are adjusted on the side steel plate, the position of the abutted seam on the upper surface is fixedly connected with the fixed steel plate through welding;
s6, transverse reinforcement: in the hoisting and splicing process of the single steel plate, after the steel plates are attached in place by an auxiliary tool, transverse welding reinforcement is carried out, and finally after the hoisting of the side steel plate is finished, the steel plate and the side wall of the cavity are tightly propped and fixed at the bottom by a wedge-shaped metal steel block;
s7, pouring concrete: and (3) carrying out concrete pouring construction in the cavity of the hoisted steel plate, wherein the concrete pouring needs to be carried out uniformly in the cavity around the steel plate and reinforced and vibrated in times.
2. The construction method of the large radiation protection steel plate pre-buried in the shear wall according to claim 1 is characterized in that in S1, the size of a large steel plate to be pre-buried is 900 \10005, 10000 \10005and4000 (H), the large steel plate is divided into small steel plates by adopting a transverse staggered joint and block production mode, and the size of each small steel plate is 100 \10005, 1250 \10005, 4000 (H) and 100 \10005, 2500 \10005and4000 (H).
3. The construction method for embedding the large radiation-proof steel plates in the shear wall according to claim 1, wherein in the step S3, when the screw rods are cut, a screw rod with the length of 5cm is reserved at the bottom of each small outer steel plate and at the two ends of the upper edge of each small outer steel plate respectively, and the screw rods are used for auxiliary positioning and connection and fixation of hoisting of the small steel plates in the later period.
4. The construction method of embedding the large radiation-proof steel plate in the shear wall according to claim 3, wherein in S5, the steel plate is tightly abutted against the positioning base plate by using an abutting device, and after the verticality is adjusted, the upper edge of the steel plate and 5cm screws reserved at two ends in advance are welded and fixed by using reinforcing steel bars, so that the installation of the side steel plate is completed.
5. The construction method for embedding the large radiation protection steel plates in the shear wall according to claim 1, wherein S5 further comprises the following steps:
s51, positioning and paying off of the small steel plate: on site, according to the position and elevation of a pre-embedded steel plate of a design drawing, marking on an outer wall steel bar and a poured outer wall surface, and meanwhile, positioning and paying off according to the pre-embedded position of a construction scheme fixing support;
s52, I-steel frame processing: the I-shaped steel is thicker than the small steel plate, each side is widened by 3 cm, and the I-shaped steel is welded to form a frame according to requirements;
s53, pre-burying and reinforcing I-shaped steel: after the binding of the wall body reinforcing steel bars is finished, accurately hoisting and welding the frame on the wall body reinforcing steel bars according to the paying-off position;
s54, pouring the pre-buried concrete of the I-shaped steel: stay and establish concrete base, when concreting, need strengthen the vibration in I-steel department, guarantee that this department concrete is close, concrete base length and width are: 4200mm, 800mm;
s55, hoisting small steel plates: and after the I-shaped steel is embedded and finished, the concrete is poured to the required elevation, and the strength of the poured concrete base meets the steel plate hoisting requirement, carrying out small steel plate hoisting construction, and hoisting the whole small steel plate into the I-shaped steel gap.
6. The construction method for embedding the large radiation-proof steel plate in the shear wall according to claim 5, wherein in S6, after the steel plate is hoisted, I-shaped steel at the upper opening of the steel plate is fixed, 600mm long I-shaped steel is adopted, and two ends of an upright post of the I-shaped steel are welded, so that the I-shaped steel at two sides of the steel plate are connected into a whole, the stability of the steel plate is enhanced, and the transverse reinforcement effect is achieved.
7. The construction method for embedding the large radiation protection steel plate in the shear wall according to claim 6, wherein in S7, after the embedded steel plate is hoisted and fixed, formwork erection and pouring are carried out on haunched beam concrete, and vibration of concrete around the I-shaped steel is enhanced during concrete pouring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211087935.9A CN115324343A (en) | 2022-09-07 | 2022-09-07 | Construction method for embedding large anti-radiation steel plate in shear wall |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211087935.9A CN115324343A (en) | 2022-09-07 | 2022-09-07 | Construction method for embedding large anti-radiation steel plate in shear wall |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115324343A true CN115324343A (en) | 2022-11-11 |
Family
ID=83930926
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211087935.9A Pending CN115324343A (en) | 2022-09-07 | 2022-09-07 | Construction method for embedding large anti-radiation steel plate in shear wall |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115324343A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20090004609U (en) * | 2007-11-12 | 2009-05-15 | 테크원네이버(주) | An install structure of shield steel plate for radiation clinic room |
| CN103046759A (en) * | 2013-01-18 | 2013-04-17 | 上海建工一建集团有限公司 | Shielding steel plate correction construction technology |
| CN103321324A (en) * | 2013-06-03 | 2013-09-25 | 江苏沪宁钢机股份有限公司 | Truss nodal region super-thick steel plate wall and building method thereof |
| CN104631666A (en) * | 2015-01-20 | 2015-05-20 | 广东省建筑工程集团有限公司 | Waterproof radioresistant construction technique of internally installed steel plates in super-thick wall body |
| CN104948228A (en) * | 2015-07-14 | 2015-09-30 | 广东省建筑工程集团有限公司 | Construction method of large high-precision anti-radiation tunnel shielding iron structure |
| CN206681199U (en) * | 2017-04-20 | 2017-11-28 | 北京工业大学 | Damping stereotype concrete wall with radiation proof function |
-
2022
- 2022-09-07 CN CN202211087935.9A patent/CN115324343A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20090004609U (en) * | 2007-11-12 | 2009-05-15 | 테크원네이버(주) | An install structure of shield steel plate for radiation clinic room |
| CN103046759A (en) * | 2013-01-18 | 2013-04-17 | 上海建工一建集团有限公司 | Shielding steel plate correction construction technology |
| CN103321324A (en) * | 2013-06-03 | 2013-09-25 | 江苏沪宁钢机股份有限公司 | Truss nodal region super-thick steel plate wall and building method thereof |
| CN104631666A (en) * | 2015-01-20 | 2015-05-20 | 广东省建筑工程集团有限公司 | Waterproof radioresistant construction technique of internally installed steel plates in super-thick wall body |
| CN104948228A (en) * | 2015-07-14 | 2015-09-30 | 广东省建筑工程集团有限公司 | Construction method of large high-precision anti-radiation tunnel shielding iron structure |
| CN206681199U (en) * | 2017-04-20 | 2017-11-28 | 北京工业大学 | Damping stereotype concrete wall with radiation proof function |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109208790B (en) | Single-side formwork erecting construction method for arc shear wall | |
| CN103485360A (en) | Steel platform tower crane foundation and construction method thereof | |
| CN107806019A (en) | Large-span suspension bridge gate Sarasota construction method | |
| CN103603359A (en) | Deep foundation pit diagonal bracing support structure demolition method | |
| CN113818562A (en) | Construction method of assembled frame structure | |
| CN105926672A (en) | Mined metro station steel pipe column construction method | |
| CN111945714B (en) | Steel sleeve guiding method combined with steel upright column inserting construction method | |
| CN111042569B (en) | Construction method for additionally building linear accelerator machine room in limited space of hospital basement | |
| CN114134928B (en) | Construction method of steel pipe column tower crane foundation | |
| CN112012197A (en) | Manual hole digging pile and construction method thereof | |
| CN114215090A (en) | Construction method of raft and compression pile in closed space | |
| CN113338333A (en) | Quick mounting method for steel beam plate under cover-excavation top-down condition | |
| CN112458905A (en) | Splicing adjustment method for prefabricated capping beam and prefabricated stand column | |
| CN112302255A (en) | Frame column inverted insertion combined system and construction method | |
| CN115324343A (en) | Construction method for embedding large anti-radiation steel plate in shear wall | |
| CN208363650U (en) | The mounting bracket of prefabricated components, the precast wall body containing the bracket | |
| CN114412168A (en) | Construction method of post-cast strip for supporting and settling reinforced concrete column | |
| CN211736514U (en) | Interior landing stage board construction system that supports | |
| CN109083184A (en) | A kind of prefabricated cushion cap of land sectional type and its production and installation method | |
| CN109629447B (en) | Variable cross-section cast-in-situ box girder construction and concrete pouring method | |
| CN112482316A (en) | Gate dam gate machine beam construction method and gate dam gate machine beam structure | |
| CN112536911A (en) | Integral construction method for bridge prefabricated stand column | |
| CN202323896U (en) | Accurate positioning device for embedded anchor cone | |
| CN217652327U (en) | Quick plugging device of concrete post-cast strip | |
| CN111074921A (en) | Prefabricated ring beam reinforcing system for prefabricated slab disassembly-free thin slab tire mold and construction method |
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 |