CN113356172B - Construction structure and construction method for building ship lock empty box structure - Google Patents
Construction structure and construction method for building ship lock empty box structure Download PDFInfo
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- CN113356172B CN113356172B CN202110691653.9A CN202110691653A CN113356172B CN 113356172 B CN113356172 B CN 113356172B CN 202110691653 A CN202110691653 A CN 202110691653A CN 113356172 B CN113356172 B CN 113356172B
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02C—SHIP-LIFTING DEVICES OR MECHANISMS
- E02C1/00—Locks or dry-docks; Shaft locks, i.e. locks of which one front side is formed by a solid wall with an opening in the lower part through which the ships pass
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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
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A10/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE at coastal zones; at river basins
- Y02A10/30—Flood prevention; Flood or storm water management, e.g. using flood barriers
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Abstract
The invention relates to a construction structure and a construction method for building a ship lock empty box structure, which not only greatly reduce the cost of erecting a support template in the empty box structure and improve the construction efficiency, but also save most of dismantling workload and material waste and save the construction cost by taking a precast concrete template as a part of a pouring main body structure. And lateral wall template and embedded steel bar adopt dislocation connection structure, make the stress dispersion of main muscle and embedded steel bar in the lateral wall template, avoid stress concentration at same height, cause concrete major structure unstable, this structure fungible tradition template effect can combine to form permanent structure with pouring the main part again, regard as permanent structure partly with the template, accelerate the construction progress greatly, practiced thrift construction cost.
Description
Technical Field
The invention belongs to the technical field of concrete pouring engineering, and relates to a construction structure and a construction method for building a lock empty box structure.
Background
At present, the common construction of the empty box structure generally adopts an inner mould method and an air bag method, the size of the empty box structure similar to a kiloton ship lock is larger, and the air bag method is not suitable. The inner mould method mainly has two kinds, one kind adopts steel pipe support and template, needs to be in accomplishing the empty case structure and pour the back, and constructor gets into the inside template and the support of demolising of empty case, therefore the empty case lateral wall often need reserve the population of intaking, all need consume a large amount of manual works and materials in setting up and demolising the in-process, and the later stage still needs to carry out the secondary shutoff to reserving the entrance to a cave, seriously influences the construction progress. And the other type is that the hollow box structure is built in advance by adopting the precast concrete template before pouring, and the precast concrete template positioned in the hollow box structure after pouring can not be detached, so that part of space of the hollow box structure can be occupied, the design function of the hollow box is influenced to a certain degree, and the construction cost is increased.
Chinese patent document CN2199252 discloses a box-type wall prefabricated product, which is made by pouring a reinforcing mesh into a form from concrete. The reinforced concrete long slab is provided with a hollow box body formed by six pieces of reinforced concrete, at least one reinforced concrete reinforcing column is arranged in the hollow box body, the length of a steel bar in the reinforced concrete long slab is larger than that of the long slab, and the steel bar extends out of two ends of the long slab. The prefabricated product can save a large amount of brick-making clay and cement, and reduce the manufacturing cost, but the hollow box structure is mostly poured by adopting an inner mould method and an inflatable bag method due to small size, when the structure is enlarged in size and applied to large-scale facilities such as a ship lock main body and the like, a support and a template need to be built for supporting, and after pouring is completed, dismantling is needed, the manpower resource consumption is high, and the construction process is complex.
Chinese patent document CN111733947A discloses an improved structure of an ultra-low clearance box culvert and a rapid and simple construction method thereof, wherein the improved structure comprises a plain concrete cushion layer, a U-shaped groove, a prefabricated cover plate and a top plate; the U-shaped groove is provided with an upward opening and is formed by a bottom plate and two side plates which are integrally connected, the bottom plate is superposed on the plain concrete cushion layer, and the inner side of the top of each side plate is provided with a bracket; two ends of the prefabricated cover plate are overlapped on the brackets of the corresponding side plates, and the prefabricated cover plate covers the opening of the U-shaped groove; the top plate is formed by pouring concrete in the second stage, and the top plate covers the tops of the prefabricated cover plate and the two side plates. Through setting up U type groove and prefabricated apron in advance to the cooperation is through second stage concreting formation roof, builds simple structure, and quick construction, it is with low costs, possess that the wholeness can be good and the good advantage of water-proof effects. However, when the structure is used in concrete, a gap exists between the improved structure and a concrete pouring body, the connection effect with the concrete is poor, and a part of a concrete structure cannot be formed.
Disclosure of Invention
Aiming at the problems in the prior art, the invention discloses a construction structure and a construction method for building a ship lock empty box structure, which can replace the function of the traditional template, can be combined with a pouring main body to form a permanent structure, and takes the template as a part of the permanent structure, thereby greatly accelerating the construction progress and saving the construction cost.
The technical scheme adopted by the invention for solving the technical problems is as follows: a construction structure for building a ship lock empty box structure comprises a pouring main body and an empty box structure, wherein the empty box structure is located on the pouring main body and comprises a back cover template and a plurality of side wall templates, the back cover template is horizontally arranged on the pouring main body, the plurality of side wall templates are vertically arranged on four sides of the back cover template, embedded steel bars embedded into the pouring main body are arranged on the periphery of the back cover template, each side wall template comprises a plurality of precast concrete templates, the precast concrete templates are fixedly connected with the embedded steel bars, the embedded steel bars are used for supporting and fixing the precast concrete templates, the side wall templates and the back cover template are jointly spliced into the empty box structure,
each precast concrete template comprises a template surface positioned on the inner side of the empty box and a pouring surface positioned on the outer side of the empty box, the template surface of each precast concrete template is flush with the edge of the bottom-sealing template, and partial edge of the template surface is overlapped with the side surface of the bottom-sealing template; a plurality of tie bars are uniformly distributed on the pouring surface of the precast concrete template, one end of each tie bar is embedded in the precast concrete template, and the other end of each tie bar extends out of the pouring surface; the precast concrete template is characterized in that a plurality of diagonal draw bars are uniformly distributed on the pouring surface of the precast concrete template, one ends of the diagonal draw bars extend into the pouring surface of the precast concrete template, and the other ends of the diagonal draw bars extend downwards in an inclined mode and are embedded into the pouring main body.
Further, many main muscle and many distribution muscle have all been buried underground in the inside of every precast concrete template, main muscle equidistant distribution is on the coplanar, distribution muscle is perpendicular with main muscle, just equidistant distribution is on the coplanar between the distribution muscle, main muscle and the cross position of distribution muscle carry out welded fastening, and many main muscle and many distribution muscle constitute net shape bearing structure jointly.
Further, the distance P between the main ribs and the distribution ribs and the template surface meets the following conditions:
wherein T is the thickness of the precast concrete template.
Further, the depth W of the end part of the tie bar extending to the precast concrete template meets the following conditions:
wherein T is the thickness of the precast concrete template.
Furthermore, the end parts of the main reinforcements in each precast concrete template extend out of the edge of the precast concrete template, the adjacent main reinforcements in each precast concrete template are arranged in a staggered mode, and the staggered distance between the adjacent main reinforcements is larger than 35 times of the diameter of the main reinforcements.
Furthermore, the diameter of the main reinforcement in the embedded steel bar and the precast concrete template is the same, and a positive and negative wire connecting sleeve is arranged at the connecting position of the embedded steel bar and the main reinforcement.
Furthermore, a plurality of hoisting rings are arranged in each precast concrete template, the hoisting rings are partially positioned at the edge of the precast concrete template, part of the hoisting rings are embedded in the precast concrete template, and the end part of each hoisting ring is fixedly connected with the distribution rib at the nearest position in the precast concrete template.
Further, the invention also discloses a construction method for building the lock empty box structure, which comprises the following steps:
s100, preparing a precast concrete template according to a preset empty box structure size:
building a steel bar structure of the precast concrete template by using the main reinforcement and the distributed reinforcement, pouring concrete into the built steel bar structure to manufacture the precast concrete template, and simultaneously pouring the hoisting ring and the tie bar into the precast concrete template;
s200, template maintenance: stacking the prefabricated concrete templates which are manufactured in a numbering way, and maintaining the prefabricated concrete templates at regular time; when the strength of the precast concrete template reaches 80% of the design strength, hoisting and splicing;
s300, assembling an empty box structure: hoisting the precast concrete template to a corresponding position of a construction site according to the serial number and the installation position, connecting and fixing the embedded steel bars and the main steel bars through the positive and negative wire connecting sleeves, reinforcing the precast concrete template by adopting diagonal draw bars, and filling and sealing gaps between adjacent precast concrete templates in the splicing process by adopting sealing soft paste;
s400, concrete pouring: after the empty box structure is spliced, a wood template is adopted to seal the connecting position of the steel bars of the empty box structure to form a pouring bin surface, and concrete is poured on the pouring main body until the concrete is flush with the top surface of the precast concrete template.
Further, before the concrete is poured in the step S400, the pouring surface of the precast concrete template needs to be roughened, the pouring surface of the precast concrete template is roughened by using high-pressure water jet to make the unevenness of the pouring surface, and then the pouring surface and the pouring body are poured with concrete of the same type as the precast concrete template.
Compared with the prior art, the invention has the following advantages:
the tool materials used by the construction structure of the hollow box structure are common materials, additional customization is not needed, the manufacturing process is simple, the construction structure and the construction method not only greatly reduce the cost of erecting the support template in the hollow box structure and improve the construction efficiency, but also the precast concrete template is used as a part of the main pouring structure, so that most of dismantling workload and material waste are avoided, and the construction cost is saved. And the side wall template and the embedded steel bars adopt a staggered connection structure, so that the stress of the main steel bars and the embedded steel bars in the side wall template is dispersed, and the phenomenon that the stress is concentrated at the same height to cause the instability of the concrete main body structure is avoided.
In the invention, each side wall template forming the hollow box structure is provided with the tie bars and the inclined reinforcing bars, the rough surface treatment is carried out on the surface of the side wall template combined with concrete, the tie bars and the embedded reinforcing bars can jointly keep the position of the side wall template fixed when concrete is poured, the inclined reinforcing bars can apply tension to the side wall template in the pouring process, the side wall template is prevented from deviating towards the inside of the hollow box due to the extrusion of the weight of the concrete on the side wall template, and the side wall template and the poured concrete main body structure are firmly connected into a whole through the tie bars and the rough surface treatment, so that the side wall template component formed by the concrete is used as a part of the permanent structure on the pouring main body, the dismantling process is reduced, and the construction time and engineering materials are greatly saved.
Drawings
Fig. 1 is a structural view of a construction structure for constructing an empty box of a ship lock according to the present embodiment;
FIG. 2 is a front view of the precast concrete form of the present embodiment;
FIG. 3 is a side view of the precast concrete formworks of the present embodiment;
fig. 4 is an enlarged structural view of a position a in fig. 3.
The reference numbers in the figures are in particular:
1-pouring a main body, 2-side wall templates, 3-main ribs, 4-distribution ribs, 5-positive and negative wire connecting sleeves, 6-embedded steel bars, 7-tie bars, 8-diagonal ribs, 9-bottom sealing templates, 10-empty box structures, 11-sealing soft pastes and 12-hoisting rings.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of 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.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the 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.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Example (b):
referring to fig. 1, the present embodiment discloses a construction structure for constructing a ship lock empty box structure 10, including a pouring main body 1 and an empty box structure 10, where the empty box structure 10 is located on the pouring main body 1, the empty box structure 10 includes a back cover formwork 9 and a plurality of side wall formworks 2, the back cover formwork 9 is horizontally disposed on the pouring main body 1, the plurality of side wall formworks 2 are vertically disposed on four sides of the back cover formwork 9, embedded steel bars 6 embedded into the pouring main body 1 are disposed around the back cover formwork 9, each side wall formwork 2 includes a plurality of precast concrete formworks, the precast concrete formworks are fixedly connected with the embedded steel bars 6, the embedded steel bars 6 are used for supporting and fixing the precast concrete formworks, and the side wall formworks 2 and the back cover formwork 9 are jointly spliced into the empty box structure 10,
each precast concrete template comprises a template surface positioned on the inner side of the empty box and a pouring surface positioned on the outer side of the empty box, the template surface of each precast concrete template is flush with the edge of the bottom-sealing template 9, and partial edge of the template surface is overlapped with the side surface of the bottom-sealing template 9; a plurality of tie bars 7 are uniformly distributed on the pouring surface of the precast concrete template, one end of each tie bar 7 is embedded in the precast concrete template, and the other end extends out of the pouring surface; the precast concrete template pours the face on evenly divide there are a plurality of diagonal draw bars 8, the one end of diagonal draw bar 8 extends to precast concrete template's the face of pouring, and the other end extends to the slant downwardly and buries underground to pouring inside the main part 1.
Wherein, it is shown in combination fig. 2 and 3, and many main muscle 3 and many distribution muscle 4 have all been buried underground to the inside of every precast concrete template, 3 equidistant distribution of main muscle are on the coplanar, distribution muscle 4 is perpendicular with main muscle 3, just equidistant distribution is on the coplanar between the distribution muscle 4, main muscle 3 carries out welded fastening with the cross position of distribution muscle 4, and many main muscle 3 and many distribution muscle 4 constitute latticed bearing structure jointly. The grid-shaped supporting structure forms a main supporting structure of the precast concrete template, the strength of the template is enhanced, so that the side wall of the hollow box is supported after the hollow box structure 10 is formed, and the template is prevented from being damaged in the carrying and pouring processes.
More closely, as shown in fig. 4, the distance P between the main reinforcement 3 and the distribution reinforcement 4 in each precast concrete form and the form surface satisfies the following condition:
wherein T is the thickness of the precast concrete template.
In more detail, the depth W of the end of the tie bar 7 extending to the precast concrete form satisfies the following condition:
wherein T is the thickness of the precast concrete template.
Combining the two conditions, the positions of the main reinforcements 3 and the distribution reinforcements 4 in each precast concrete template are close to the template surface, and the grid-shaped supporting structure formed by the main reinforcements 3 and the distribution reinforcements 4 can be used for reinforcing the template surface part and enhancing the structural strength of the template surface; and the one end of drawknot muscle 7 is buried in the inside of precast concrete template underground, and when the degree of depth that 7 tip of drawknot muscle extended to precast concrete template satisfied above-mentioned condition, can avoid drawknot muscle 7 to bury the degree of depth not enough underground on the one hand, make precast concrete template and concreting's joint strength less, on the other hand can avoid drawknot muscle 7 to bury deeply underground, causes the other end and concrete joint depth not enough, ensures precast concrete template and concreting's joint strength as far as possible, ensures that both constitute a body structure.
More specifically, the end of each main reinforcement 3 in each precast concrete template extends out of the edge of the precast concrete template, the adjacent main reinforcements 3 in each precast concrete template are arranged in a staggered manner, and the staggered distance between the adjacent main reinforcements 3 is larger than 35 times of the diameter of the main reinforcement 3. And the diameter of the embedded steel bar 6 is the same as that of the main bar 3 in the precast concrete template, and a positive and negative wire connecting sleeve 5 is arranged at the connecting position of the embedded steel bar 6 and the main bar 3. Through with adjacent main muscle 3 staggered arrangement in the precast concrete template, make buried steel 6 and the precast concrete template in the main position of muscle 3 also keep staggered arrangement in the height, avoid stress concentration in the bar connection position of same height, make the stress of bar connection position evenly distributed as far as possible on every concrete template in advance to strengthen the fixed strength of concrete template in advance.
Specifically, all be equipped with a plurality of hoist and mount rings 12 in every precast concrete template, hoist and mount ring 12 part is located precast concrete template's edge, just partly bury underground inside precast concrete template of hoist and mount ring 12, and the tip of every hoist and mount ring 12 is the distribution muscle 4 of nearest position in the precast concrete template of fixed connection respectively. The hoisting ring 12 is used for hoisting and carrying the precast concrete template, and is more convenient to carry and mount.
In addition, in more detail, based on the construction structure, the present embodiment further discloses a construction method for constructing the ship lock empty box structure 10, which includes the following steps:
s100, preparing a precast concrete template according to the size of a preset empty box structure 10:
the main reinforcement 3 and the distribution reinforcement 4 are utilized to build a reinforced structure of the precast concrete template, concrete is poured into the built reinforced structure to form the precast concrete template, and meanwhile, the hoisting ring 12 and the tie bar 7 are poured into the precast concrete template together;
s200, template maintenance: stacking the prefabricated concrete templates which are manufactured in a numbering way, and maintaining the prefabricated concrete templates at regular time; when the strength of the precast concrete template reaches 80% of the design strength, hoisting and splicing;
s300, assembling an empty box structure 10: the prefabricated concrete formwork is hoisted to the corresponding position of a construction site according to the number and the installation position, the embedded steel bars 6 and the main steel bars 3 are fixedly connected through the positive and negative wire connecting sleeves 5, the prefabricated concrete formwork is reinforced by the inclined pull bars 8, gaps of adjacent prefabricated concrete formworks in the splicing process are filled and sealed by the sealing soft pasters 11, the prefabricated concrete formwork is prepared according to the size of a preset empty box, the splicing position of each prefabricated concrete formwork is fixed and unchanged, the prefabricated concrete formwork is convenient to install and numbered, the prefabricated concrete formworks can be spliced according to the number during splicing, the sealing among the formworks is tight during splicing, the edge of each formwork needs to be kept straight, the gaps are filled by the sealing soft pasters 11 between the formworks, and concrete leakage is reduced.
S400, concrete pouring: after the empty box structure 10 is spliced, the steel bar connecting position of the empty box structure 10 is sealed by a wood formwork to form a pouring bin surface, and concrete is poured on the pouring main body 1 until the concrete is flush with the top surface of the precast concrete formwork. Before the concrete is poured, the rough surface treatment is needed to be carried out on the pouring surface of the precast concrete template, the high-pressure water jet is used for carrying out rough brushing treatment on the pouring surface of the precast concrete template to enable the pouring surface to be uneven, then the concrete with the same type as the precast concrete template is poured on the pouring bin surface and the pouring main body 1, and the combination effect of the precast concrete template and the pouring concrete can be enhanced through the rough surface treatment.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention shall fall within the protection scope of the present invention.
Claims (7)
1. A construction structure for building a ship lock empty box structure is characterized by comprising a pouring main body and an empty box structure, wherein the empty box structure is located on the pouring main body and comprises a back cover template and a plurality of side wall templates, the back cover template is horizontally arranged on the pouring main body, the side wall templates are vertically arranged on four sides of the back cover template, embedded steel bars embedded into the pouring main body are arranged on the periphery of the back cover template, each side wall template comprises a plurality of precast concrete templates, the precast concrete templates are fixedly connected with the embedded steel bars, the embedded steel bars are used for supporting and fixing the precast concrete templates, the side wall templates and the back cover template are jointly spliced into the empty box structure,
each precast concrete template comprises a template surface positioned on the inner side of the empty box and a pouring surface positioned on the outer side of the empty box, the template surface of each precast concrete template is flush with the edge of the bottom-sealing template, and partial edge of the template surface is overlapped with the side surface of the bottom-sealing template; a plurality of tie bars are uniformly distributed on the pouring surface of the precast concrete template, one end of each tie bar is embedded in the precast concrete template, and the other end of each tie bar extends out of the pouring surface; a plurality of diagonal braces are uniformly distributed on the casting surface of the precast concrete template, one end of each diagonal brace extends into the casting surface of the precast concrete template, the other end of each diagonal brace extends downwards in an inclined manner and is embedded into the casting main body,
a plurality of main ribs and a plurality of distribution ribs are embedded in each precast concrete template, the main ribs are distributed on the same plane at equal intervals, the distribution ribs are perpendicular to the main ribs, the distribution ribs are distributed on the same plane at equal intervals, the crossing positions of the main ribs and the distribution ribs are welded and fixed, and the main ribs and the distribution ribs jointly form a grid-shaped supporting structure,
the diameter of the main reinforcement in the embedded steel bar and the precast concrete template is the same, and a positive and negative wire connecting sleeve is arranged at the connecting position of the embedded steel bar and the main reinforcement.
2. The construction structure according to claim 1, wherein the distance P between the main bar and the distribution bar and the formwork surface satisfies the following condition:
wherein T is the thickness of the precast concrete template.
3. The construction structure according to claim 1, wherein a depth W of the tie bar end portion extending to the precast concrete form satisfies the following condition:
wherein T is the thickness of the precast concrete template.
4. The construction structure according to claim 1, wherein the ends of the main reinforcements in each precast concrete form extend beyond the edges of the precast concrete form, adjacent main reinforcements in each precast concrete form are staggered, and the staggered distance between adjacent main reinforcements is greater than 35 times the diameter of the main reinforcement.
5. The construction structure according to claim 1, wherein a plurality of hoisting rings are arranged in each precast concrete template, the hoisting rings are partially positioned at the edge of the precast concrete template, a part of the hoisting rings is embedded in the precast concrete template, and the end of each hoisting ring is fixedly connected with the nearest distribution rib in the precast concrete template.
6. A construction method for constructing a ship lock empty box structure using the construction structure of any one of claims 1 to 5, comprising the steps of:
s100, preparing a precast concrete template according to a preset empty box structure size:
building a steel bar structure of the precast concrete template by using the main reinforcement and the distributed reinforcement, pouring concrete into the built steel bar structure to manufacture the precast concrete template, and simultaneously pouring the hoisting ring and the tie bar into the precast concrete template;
s200, template maintenance: stacking the prefabricated concrete templates which are manufactured in a numbering way, and maintaining the prefabricated concrete templates at regular time; when the strength of the precast concrete template reaches 80% of the design strength, hoisting and splicing;
s300, assembling an empty box structure: hoisting the precast concrete template to a corresponding position of a construction site according to the serial number and the installation position, connecting and fixing the embedded steel bars and the main steel bars through the positive and negative wire connecting sleeves, reinforcing the precast concrete template by adopting diagonal draw bars, and filling and sealing gaps between adjacent precast concrete templates in the splicing process by adopting sealing soft paste;
s400, concrete pouring: after the empty box structure is spliced, a wood template is adopted to seal the connecting position of the steel bars of the empty box structure to form a pouring bin surface, and concrete is poured on the pouring main body until the concrete is flush with the top surface of the precast concrete template.
7. The construction method according to claim 6, wherein before the step S400, the casting surface of the precast concrete form is roughened by high-pressure water jet to make the casting surface uneven, and then the casting is performed on the casting surface and the casting body by using the same type of concrete as the precast concrete form.
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| CN111733947A (en) * | 2020-07-24 | 2020-10-02 | 南昌市城市规划设计研究总院 | Ultra-low clearance box culvert improved structure and quick and simple construction method thereof |
| CN111827239A (en) * | 2020-07-27 | 2020-10-27 | 曹灵涛 | Construction method of assembled berthing pier |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8567153B1 (en) * | 2011-04-21 | 2013-10-29 | Spray Rock Llc | Composite concrete and framing system and method for building construction |
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2021
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|---|---|---|---|---|
| CN2199252Y (en) * | 1994-06-22 | 1995-05-31 | 陆丰成 | Boxed wall pre-cast element |
| CN105888108A (en) * | 2016-05-25 | 2016-08-24 | 中大建设股份有限公司 | Reinforced concrete shear wall with positioning prefabricated member inside and construction method of reinforced concrete shear wall |
| CN107476470A (en) * | 2017-09-05 | 2017-12-15 | 广西大学 | Steel pipe built in assembled and GFRP pipe regeneration concrete compound shear walls and its construction method |
| CN108505500A (en) * | 2018-05-19 | 2018-09-07 | 中水电第十工程局（郑州）有限公司 | It is a kind of to tilt seamless spliced prefab-form and its installation method |
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