CN117888753A - Column type inspection pit and construction method thereof - Google Patents
Column type inspection pit and construction method thereof Download PDFInfo
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- CN117888753A CN117888753A CN202410019411.9A CN202410019411A CN117888753A CN 117888753 A CN117888753 A CN 117888753A CN 202410019411 A CN202410019411 A CN 202410019411A CN 117888753 A CN117888753 A CN 117888753A
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- 238000010276 construction Methods 0.000 title claims abstract description 61
- 238000007689 inspection Methods 0.000 title claims abstract description 57
- 239000011150 reinforced concrete Substances 0.000 claims abstract description 147
- 230000007246 mechanism Effects 0.000 claims abstract description 68
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 18
- 239000010959 steel Substances 0.000 claims abstract description 18
- 239000004567 concrete Substances 0.000 claims description 72
- 238000000034 method Methods 0.000 claims description 13
- 238000007788 roughening Methods 0.000 claims description 9
- 238000012423 maintenance Methods 0.000 claims description 8
- 238000013459 approach Methods 0.000 claims description 3
- 238000011065 in-situ storage Methods 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 5
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 230000008844 regulatory mechanism Effects 0.000 abstract 1
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
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- 238000003860 storage Methods 0.000 description 2
- CYTYCFOTNPOANT-UHFFFAOYSA-N Perchloroethylene Chemical group ClC(Cl)=C(Cl)Cl CYTYCFOTNPOANT-UHFFFAOYSA-N 0.000 description 1
- 239000011398 Portland cement Substances 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H5/00—Buildings or groups of buildings for industrial or agricultural purposes
- E04H5/02—Buildings or groups of buildings for industrial purposes, e.g. for power-plants or factories
- E04H5/06—Pits or building structures for inspection or services
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B23/00—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
- B28B23/02—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members
-
- 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
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/30—Columns; Pillars; Struts
- E04C3/34—Columns; Pillars; Struts of concrete other stone-like material, with or without permanent form elements, with or without internal or external reinforcement, e.g. metal coverings
-
- 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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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
Abstract
The application relates to a column type inspection pit and a construction method thereof, wherein the construction method comprises the steps of pouring a base and prefabricating a plurality of reinforced concrete columns; installing an adjusting mechanism around the base, and installing reinforced concrete upright posts on the adjusting mechanism; the height and the position of the reinforced concrete upright post on the base are controlled and regulated by the control and regulation mechanism; pouring a reverse bank on the base; dismantling the adjusting mechanism, and installing the steel rail on a plurality of reinforced concrete upright posts arranged along the first direction; according to the construction method of the column type inspection pit, the prefabricated reinforced concrete column is matched with the cast-in-situ base and the reverse bank, so that the on-site construction period of the inspection pit column can be shortened while the bearing capacity of a foundation is guaranteed, the construction efficiency is improved, and meanwhile, the height and the position of the prefabricated reinforced concrete column are adjusted by utilizing the adjusting mechanism before the reverse bank is poured, so that the construction precision of the prefabricated reinforced concrete column is improved, and the construction effect of the column type inspection pit is guaranteed.
Description
Technical Field
The application relates to the technical field of column type inspection pits, in particular to a column type inspection pit and a construction method thereof.
Background
The rail transit is used as a rapid, on-time, large-traffic and pollution-free green transportation mode and is widely applied to urban construction. In order to create a safe and high-quality service environment and meet the requirements of daily train overhaul and maintenance, a good car inspection operation and maintenance place is needed, wherein a column type inspection pit is an indispensable component in a car section overhaul storage.
The foundation and the upright post of the current column type inspection pit are generally constructed in a cast-in-situ mode. However, the cast-in-situ construction is difficult to control the on-site pouring precision, the construction quality of the embedded sleeve is difficult to ensure, the whole precision is difficult to meet the track construction requirement, and a large amount of fine adjustment work is needed to be performed subsequently.
Disclosure of Invention
Accordingly, it is necessary to provide a column type inspection pit and a construction method thereof, in order to solve the problems of long construction period, slow construction progress, and difficulty in meeting the requirements of construction accuracy.
According to an aspect of the present application, there is provided a construction method of a column type inspection pit, including:
pouring a base;
installing an adjusting mechanism around the base, and installing a plurality of prefabricated reinforced concrete upright posts on the adjusting mechanism;
controlling the adjusting mechanism to adjust the height and the position of the reinforced concrete columns on the base, so that the height of each reinforced concrete column is consistent with the set height, and the distance between two adjacent reinforced concrete columns along the first direction is consistent with the set distance;
pouring a reverse ridge on the base, and enabling the poured reverse ridge to be in contact with the reinforced concrete upright post;
and removing the adjusting mechanism, installing the steel rail on the plurality of reinforced concrete upright posts arranged along the first direction, and enabling the steel rail to be parallel to the first direction.
In one embodiment, the construction method of the column type inspection pit further comprises: prefabricating a plurality of reinforced concrete columns;
prefabricating a plurality of reinforced concrete columns, including:
installing a first embedded part and a second embedded part on the die, and enabling the first embedded part and the second embedded part to be respectively close to two sides of the die, which are away from each other;
placing a die and enabling the first embedded part to be in contact with the object bearing surface;
pouring concrete into the mold to enable the concrete to be in contact with the first embedded part and the second embedded part;
disassembling the mould to obtain a reinforced concrete upright post;
the die comprises a bottom die and four side dies, the four side dies are connected in a mutually perpendicular mode, the bottom die is connected with the four side dies in a perpendicular mode, the first embedded part is arranged on the bottom die, and the second embedded part penetrates through the two side dies which are arranged oppositely.
In one embodiment, the mounting an adjustment mechanism around the base includes:
two adjusting frames are arranged on two sides of the base or on the upper side of the base along the second direction;
mounting the connecting frame on the two adjusting frames, and enabling the connecting frame to be parallel to the second direction;
the second direction is perpendicular to the first direction, and the adjusting mechanism comprises a connecting frame and two adjusting frames.
In one embodiment, the mounting the reinforced concrete column on the adjustment mechanism comprises:
connecting two reinforced concrete upright posts through a first connecting piece to form a first upright post group;
connecting the two first upright post groups through a second connecting piece to form a second upright post group;
connecting the first connecting piece or the second connecting piece with a connecting frame of the adjusting mechanism;
the first connecting piece is perpendicular to the second connecting piece.
In one embodiment, the connecting the two reinforced concrete columns by the first connecting piece includes:
and connecting the two sides of the first connecting piece with the first embedded pieces of the two reinforced concrete upright posts respectively.
In one embodiment, the controlling and adjusting mechanism adjusts the height and position of the reinforced concrete columns so that the distance between two adjacent reinforced concrete columns along the first direction is consistent with the set distance, and the controlling and adjusting mechanism comprises:
the control and adjustment mechanism is used for placing the reinforced concrete upright post on a marking point on the base, and enabling a connecting line between a first embedded part on the reinforced concrete upright post and the marking point to be perpendicular to the base;
the base is provided with a plurality of marking points, and the distance between two adjacent marking points along the first direction is consistent with the set distance.
In one embodiment, the pouring the counter-ridge on the base and contacting the poured counter-ridge with the reinforced concrete column comprises:
roughening the part of the reinforced concrete upright post around the second embedded part;
and pouring concrete between two adjacent reinforced concrete columns along the first direction, and enabling the concrete to cover a second embedded part between the two adjacent reinforced concrete columns.
In one embodiment, the pouring the inverted ridge on the base and contacting the poured inverted ridge with the reinforced concrete upright post further comprises:
arranging two groups of templates on a plurality of reinforced concrete columns along a first direction, and enabling the two groups of templates to be matched with the reinforced concrete columns to form a plurality of pouring areas;
setting an elevation control line on the template, and enabling the distance between the elevation control line and the base to be consistent with the set height of the counter ridge;
pouring concrete into the pouring area, and stopping pouring when the poured concrete approaches to the elevation control line;
and manually filling concrete into the pouring area until the filled concrete contacts with the elevation control line.
In one embodiment, the dismounting and adjusting mechanism mounts a rail on a plurality of reinforced concrete columns arranged along a first direction, and includes:
after the reverse ridge maintenance strength reaches the set strength, the first embedded part is detached from the adjusting mechanism;
and connecting the steel rail with the first embedded part, and performing adjustment and calibration to enable the steel rail to be parallel to the first direction.
According to another aspect of the present application, there is provided a column type inspection pit obtained by constructing the column type inspection pit according to any one of the above embodiments.
According to the column type inspection pit and the construction method thereof, the prefabricated reinforced concrete column is matched with the cast-in-situ base and the reverse ridge, so that the on-site construction period of the inspection pit column can be shortened while the bearing capacity of a foundation is guaranteed, the construction efficiency is improved, and meanwhile, the height and the position of the prefabricated reinforced concrete column are adjusted by utilizing the adjusting mechanism before the reverse ridge is poured, so that the construction precision of the prefabricated reinforced concrete column is improved, and the construction effect of the column type inspection pit is guaranteed.
Drawings
Fig. 1 is a schematic structural view of a base of a column inspection pit according to some embodiments of the present application.
Fig. 2 is a schematic structural diagram of a base of a column inspection pit and an adjusting mechanism according to some embodiments of the present application.
Fig. 3 is a schematic structural view of a base of a column inspection pit and an adjusting mechanism according to other embodiments of the present application.
Fig. 4 is a schematic structural view of a second column set of a column inspection pit according to some embodiments of the present application.
Fig. 5 is a schematic structural diagram of the base of the column inspection pit, the adjusting mechanism and the second column group according to some embodiments of the present disclosure.
Fig. 6 is a schematic structural diagram of a second column set of column inspection pits and rails and a counter ridge according to some embodiments of the present disclosure.
Reference numerals:
1. a base; 11. a reinforcing bar member; 12. marking points;
2. reinforced concrete columns; 21. the first embedded part; 22. the second embedded part; 23. a first connector; 24. a second connector;
3. an adjusting mechanism; 31. a connecting frame; 32. an adjusting frame;
4. a reverse bank;
5. a rail.
Detailed Description
In order to make the above objects, features and advantages of the present application more comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is, however, susceptible of embodiment in many other forms than those described herein and similar modifications can be made by those skilled in the art without departing from the spirit of the application, and therefore the application is not to be limited to the specific embodiments disclosed below.
In the description of the present application, it should be understood that, if there are terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., these terms refer to the orientation or positional relationship based on the drawings, which are merely for convenience of description and simplification of description, and do not indicate or imply that the apparatus or element referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.
Furthermore, the terms "first," "second," and the like, if any, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the terms "plurality" and "a plurality" if any, mean at least two, such as two, three, etc., unless specifically defined otherwise.
In this application, unless explicitly stated and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly. For example, the two parts can be fixedly connected, detachably connected or integrated; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.
In this application, unless expressly stated or limited otherwise, the meaning of a first feature being "on" or "off" a second feature, and the like, is that the first and second features are either in direct contact or in indirect contact through an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
It will be understood that if an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. If an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein, if any, are for descriptive purposes only and do not represent a unique embodiment.
The rail transit is taken as a rapid, on-time, large-traffic and pollution-free green transportation mode, and accords with the principle of sustainable development. In order to create a safe and high-quality service environment and meet the requirements of daily overhaul and maintenance of trains, a good car inspection operation and maintenance place is needed, and a column type inspection pit is an indispensable component in a car section overhaul storage.
The inspection pits of the vehicle sections at home and abroad are generally in the forms of side wall type inspection pits, pillar type inspection pits and the like, but the more common inspection pit forms are pillar type inspection pits, and column type inspection pit foundations and columns are generally in cast-in-place form in construction. However, the cast-in-situ construction time is long, the work efficiency is low, the speed is low, the quality is difficult to guarantee due to the influence of other conditions and other factors, and the problems that the construction precision of an inspection pit cannot meet the track construction requirement, reworking is required and the like often occur. That is, the cast-in-situ construction must wait until the concrete of the former structure reaches the set strength to perform the construction of the latter structure, so the problems of long construction period and slow construction progress are existed, the on-site multi-professional construction cooperation is not facilitated, the on-site casting precision is difficult to perform better control, the construction quality of the embedded sleeve is difficult to ensure, the whole precision is difficult to meet the track construction requirement, and a large amount of fine adjustment work is performed subsequently. Therefore, there is a need for a construction method of a column type inspection pit to solve the above problems.
Referring to fig. 1-6, an embodiment of the present application provides a construction method of a column type inspection pit, including:
and pouring the base 1 and prefabricating a plurality of reinforced concrete upright posts 2. Specifically, the foundation 1 is poured, and the reinforced concrete upright post 2 is prefabricated and produced at the stage of curing after pouring is completed. In addition, the base 1 after pouring is provided with a mounting groove and a plurality of steel bar pieces 11, and the steel bar pieces 11 are partially positioned in the base 1 and partially positioned in the mounting groove. The two sides of the reinforced concrete upright post 2 after pouring are respectively provided with a first embedded part 21 and a second embedded part 22, wherein the first embedded part 21 can be an embedded sleeve, and the second embedded part 22 can be embedded bars.
An adjusting mechanism 3 is arranged around the base 1, and the reinforced concrete upright post 2 is arranged on the adjusting mechanism 3. Specifically, at the stage of completing pouring of the base 1 and curing, the adjusting mechanism 3 is installed at the same time, the height of the adjusting mechanism 3 is adjusted, the absolute height of the adjusting mechanism 3 is determined according to the elevation of the bottom plate and the absolute elevation of the final track, the elevation of the top surface of the upright post is reversely pushed, and after the positioning is well measured, the first embedded part 21 of the reinforced concrete upright post 2 is connected with the adjusting mechanism 3. In addition, the leveling door frame is selected as the adjusting mechanism 3, the rigidity and the stability of the leveling door frame can meet the weight of at least four reinforced concrete upright posts 2, the reinforced concrete upright posts 2 are ensured not to sink in the installation process, and the installation accuracy is further ensured.
The height and the position of the reinforced concrete columns 2 on the base 1 are controlled by the control and adjustment mechanism 3, so that the height of each reinforced concrete column 2 is consistent with the set height, and the distance between two adjacent reinforced concrete columns 2 along the first direction is consistent with the set distance. Specifically, a plurality of marking points 12 are arranged on the base 1, and after the reinforced concrete column 2 is placed on the base 1, the adjusting mechanism 3 is controlled to adjust the position of the reinforced concrete column 2 on the base 1, so that the reinforced concrete column 2 is positioned on the marking points 12. In addition, the height of the reinforced concrete column 2 on the base 1 is adjusted by the adjusting mechanism 3 at the same time, so that the height of the top of the reinforced concrete column 2 is consistent with the set height.
And pouring the reverse ridge 4 on the base 1, and enabling the poured reverse ridge 4 to be in contact with the reinforced concrete upright posts 2. Specifically, the second embedded part 22 on the reinforced concrete column 2 is connected with the reinforced steel part 11 on the base 1, so as to enhance the stability between the reinforced concrete column 2 and the base 1. And pouring the reverse ridge 4 in the mounting groove of the base 1, and enabling the poured reverse ridge 4 to cover the second embedded part 22 on the reinforced concrete upright post 2 and the reinforced steel bar 11 on the base 1. The counter-ridge 4 is a structure for firmly connecting the base 1 with the reinforced concrete column 2.
The adjusting mechanism 3 is removed, and the rail 5 is mounted on the plurality of reinforced concrete columns 2 arranged in the first direction, and the rail 5 is made parallel to the first direction. Specifically, after the curing strength of the back sill 4 reaches the set strength, that is, more than 75%, the first embedded part 21 is detached from the adjusting mechanism 3. Then the steel rail 5 is connected with the first embedded part 21, and adjustment and calibration are performed so that the steel rail 5 is parallel to the first direction. It should be noted that, before the adjustment mechanism 3 is removed or after the adjustment mechanism 3 is removed, a grouting operation is performed between the base 1 and the reinforced concrete column 2 to fill the gap between the base 1 and the reinforced concrete column 2.
According to the construction method of the column type inspection pit, stability and reliability of a stress foundation are guaranteed through the cast-in-situ base 1, the assembled reinforced concrete column 2 is combined, a force transmission system of the column type inspection pit is changed, a stress structure of the base 1 is provided with an optimization space, a traditional mode that reinforcing steel bars of the whole stress base 1 are encrypted is changed into a mode that reinforcing steel bars only depend on a part, which is in contact with the stress base 1 and the assembled reinforced concrete column 2, are encrypted, meanwhile, the construction is simpler due to the combined stress system of the assembled reinforced concrete column 2 and the reverse sill 4, construction quality and precision are improved through cooperation with the adjusting mechanism 3, and precision leveling work during subsequent track installation and construction is reduced. That is, by using the mode that the precast reinforced concrete upright post 2 is matched with the cast-in-situ base 1 and the inverted ridge 4, the site construction period of the inspection pit upright post can be shortened while the bearing capacity of the foundation is ensured, the construction efficiency is improved, and meanwhile, the height and the position of the precast reinforced concrete upright post 2 are adjusted by utilizing the adjusting mechanism 3 before the inverted ridge 4 is poured, so that the construction precision of the precast reinforced concrete upright post 2 is improved, and the construction effect of the column type inspection pit is further ensured.
In one of the embodiments, a number of reinforced concrete columns 2 are prefabricated, comprising:
the first embedded part 21 and the second embedded part 22 are arranged on the die, and the first embedded part 21 and the second embedded part 22 are respectively close to two sides of the die, which are away from each other. The mould comprises a bottom mould and four side moulds, wherein the four side moulds are mutually and perpendicularly connected in pairs, and the bottom mould is perpendicularly connected with the four side moulds to form a space for accommodating concrete. The bottom die is provided with a reserved hole, and the first embedded part 21 is arranged on the reserved hole. The second embedded part 22 is arranged on the two side dies in a penetrating mode, the two side dies are arranged on the side dies far away from the bottom die, and the second embedded part 22 is perpendicular to the first direction and the second direction. In addition, the edge joints of the four side dies are all at the corner arc of the reinforced concrete upright post 2, and the four side dies adopt one-step forming technology, so that the chamfering is smooth and attractive, and zero-missing corner falling phenomenon is avoided during die removal. The die is installed by adopting a mechanical cooperation manual mode, the upright post reinforcement cage is manufactured and then fixed after standing on the bottom die, and then the side dies are installed and reinforced one by one firmly. After the second embedded part 22 is arranged on the side die in a penetrating way, a slurry stop is adopted to seal a gap between the second embedded part 22 and the side die.
And placing the die and enabling the bottom die and the first embedded part 21 to be in contact with the bearing surface, so as to ensure the pouring quality of the first embedded part 21. And pouring concrete into the mold, so that the concrete is in contact with the first embedded part 21 and the second embedded part 22, and coating the first embedded part 21 and part of the second embedded part 22 in the mold. Because the concrete pouring quantity of each reinforced concrete upright post 2 is very small during pouring, the pouring is carried out by adopting manual cooperation with pouring tooling equipment, 10 reinforced concrete upright posts 2 are combined into a pouring unit, and the pouring of the upright posts is sequentially carried out by adopting a track pouring vehicle. And in the pouring process, layered vibration is noted, and the pouring thickness of each layer is not more than 300mm. After the reinforced concrete column 2 is poured, the joint between the reinforced concrete column 2 and the base 1 is roughened. The roughening is the operation of chiseling the crust hardened on the surface of the old concrete by using an air pick or other roughening tools to form a rough surface, and aims to chisele off the slurry on the surface of the concrete, so that the concrete at the joint between the old and the new is compact, and the joint is firm. The roughening depth is based on 1/3-1/2 exposed stones on the old concrete.
In addition, for the concrete with a smoother surface, tools such as a chip and a chopping axe are used for roughening, a base layer after roughening is brushed with dust by a steel wire brush, then the concrete is watered and wetted, and a slurry spraying pump is preferably adopted during the watering and wetting, and then a plain cement slurry of 108 glue is brushed; the concrete bulge of the convex base layer, in particular to wood strips, wood chips and the like embedded in the concrete, is firstly chiseled cleanly by a chisel, and is flattened according to the requirement. Because roughening roughens the smooth surface of the base layer, the adhesion of the mortar is improved. Therefore, other methods can be adopted to roughen the surface of the plastering base layer, and the surface of the plastering layer is directly roughened. When plastering, firstly, a wood trowel is used for trowelling the plastering layer, and then the wood trowel is used for rubbing the surface. When the iron trowel is needed to be smeared and pressed (such as a ceiling), the iron trowel can be slightly erected, and the plaster layer is roughened to form a rough surface.
And disassembling the mould to obtain the reinforced concrete upright post 2. Specifically, after the reinforced concrete upright post 2 is coagulated for 24 hours to reach the disassembly strength, the side mold is disassembled. And then, roughening the combined part of the reinforced concrete upright post 2 and the reverse ridge 4, and curing after finishing the treatment. Wherein, the curing of the concrete is to artificially cause certain humidity and temperature conditions, so that the concrete just poured can be normal or the hardening and strength increase of the concrete can be accelerated. The concrete can harden and increase strength gradually as a result of the hydration of the cement, which requires certain temperature and humidity conditions. If the surrounding environment does not exist under the condition, the concrete needs to be manually cured. The concrete curing method comprises natural curing and steam curing. Natural curing is performed by spraying water and spraying plastic film. The former is covered with concrete by a curtain or the like, and water is often sprayed to keep the concrete moist. The curing time depends on the cement species, such as ordinary Portland cement concrete, not less than 7 days and nights. The method is suitable for high-rise structures, large-area concrete structures and the like which are not easy to be subjected to water spraying maintenance, perchloroethylene resin plastic solution is sprayed on the surface of the concrete by using a spray gun, a layer of film is formed on the surface of the concrete after the solution volatilizes, the concrete is isolated from air, the water evaporation in the concrete is prevented, the normal cement hydration is ensured, and the film can age and fall off by itself after the maintenance is completed. Steam curing places the concrete structure in a curing chamber filled with saturated steam or a mixture of steam and air to accelerate the hardening of the concrete in a relatively high temperature and humidity environment.
In one embodiment, the adjusting mechanism 3 is installed around the base 1, including:
two adjusting frames 32 are installed on both sides of the base or on the upper side of the base in the second direction, and a connection frame 31 is installed on the two adjusting frames 32 such that the connection frame 31 is parallel to the second direction. Wherein the second direction is perpendicular to the first direction, and the adjusting mechanism comprises a connecting frame 31 and two adjusting frames 32.
Specifically, referring to fig. 2, in one embodiment, two adjusting brackets 32 are installed at both sides of the base in the second direction, and a connection bracket 31 is installed on the two adjusting brackets 32. Subsequently after mounting at least one reinforced concrete column 2 on the connection frame 31, the reinforced concrete column 2 is located between two adjustment frames 32. The two adjusting frames 32 subsequently and simultaneously drive the connecting frame 31 and the reinforced concrete upright 2 to move so as to adjust the height and the position of the reinforced concrete upright 2 and realize the precise leveling of the reinforced concrete upright 2.
Referring to fig. 3, in another embodiment, two adjusting brackets 32 are installed at the upper side of the base in the second direction, and a connection bracket 31 is installed on the two adjusting brackets 32. Subsequently, after at least two reinforced concrete columns 2 are mounted on the connecting frame 31, two adjusting frames 32 are respectively located between two adjacent reinforced concrete columns 2. The two adjusting frames 32 subsequently drive the connecting frame 31 and at least two reinforced concrete columns 2 to move at the same time so as to adjust the height and the position of the reinforced concrete columns 2 and realize the precise leveling of the reinforced concrete columns 2.
Referring to fig. 4, in one embodiment, the mounting of the reinforced concrete column 2 on the adjustment mechanism 3 comprises:
two reinforced concrete columns 2 are connected through a first connecting piece 23 to form a first column group. The two first column groups are connected by a second connector 24 to form a second column group. The first connecting piece 23 or the second connecting piece 24 is connected with the connecting frame 31 of the adjusting mechanism 3. Wherein the first connecting piece 23 is perpendicular to the second connecting piece 24.
Specifically, both sides of the first connecting member 23 are respectively connected with the first embedded members 21 of the two reinforced concrete columns 2. That is, the first connector 23 is connected to the first embedments 21 of two reinforced concrete columns 2 adjacent in the first direction, so that the two reinforced concrete columns 2 constitute a first column group. The second connecting piece 24 is then connected to the first connecting pieces 23 of two first column groups adjacent in the second direction, so that the two first column groups constitute a second column group. And then the first connecting piece 23 is connected with the connecting frame 31 of the adjusting mechanism 3, so that the adjusting mechanism 3 drives the connecting frame 31 and the first connecting piece 23 to move so as to adjust the position and the height of the second upright post group, and the adjusting mechanism 3 can adjust the positions and the heights of the four reinforced concrete upright posts 2 at the same time so as to finish the fine leveling operation.
More specifically, referring to fig. 2 and 4, in one embodiment, two adjusting brackets 32 of the adjusting mechanism 3 are mounted on both sides of the base in the second direction, and when the reinforced concrete columns 2 are mounted on the adjusting mechanism 3, the first connecting pieces 23 of the second column group are mounted on the connecting brackets 31 so that the second column group is located between the two adjusting brackets 32. The two adjusting frames 32 subsequently and simultaneously drive the connecting frame 31 and the second column group to move so as to adjust the heights and positions of the four reinforced concrete columns 2 of the second column group, thereby realizing the precise leveling of a plurality of reinforced concrete columns 2 simultaneously.
Referring to fig. 3, in another embodiment, two adjusting frames 32 of the adjusting mechanism 3 are installed on the upper side of the base along the second direction, and when the reinforced concrete columns 2 are installed on the connecting frame 31, the first connecting pieces 23 of two second column groups are respectively installed on two sides of the connecting frame 31, so that the two adjusting frames 32 are located between the two second column groups. The two adjusting frames 32 subsequently and simultaneously drive the connecting frame 31 and the two second upright post groups to move so as to adjust the heights and positions of the eight reinforced concrete upright posts 2 of the two second upright post groups, thereby realizing the precise leveling of the plurality of reinforced concrete upright posts 2.
It should be noted that the first connecting member 23 may also be connected to the first embedded members 21 of four, six or eight reinforced concrete columns 2 adjacent in the first direction, so that the four, six or eight reinforced concrete columns 2 form the first column group. And the second embedded parts 22 of the two adjacent reinforced concrete columns 2 of the first column group can be connected with each other through connecting sheets so as to improve the stability of the first column group.
Referring to fig. 2 to 5, in one embodiment, controlling the adjusting mechanism 3 to adjust the height and position of the reinforced concrete columns 2 so that the distance between two adjacent reinforced concrete columns 2 in the first direction coincides with the set distance includes:
a plurality of mark points 12 are provided on the base 1, and the distance between two adjacent mark points 12 along the first direction is made to coincide with the set distance. The adjusting mechanism 3 is controlled to place the reinforced concrete column 2 on the marking point 12, and the connecting line between the first embedded part 21 on the reinforced concrete column 2 and the marking point 12 is perpendicular to the base 1, so that the adjusting precision is ensured.
Referring to fig. 1 and 6, in one embodiment, pouring the counter-ridge 4 on the base 1 and bringing the poured counter-ridge 4 into contact with the reinforced concrete column 2 includes:
the reinforced concrete columns 2 are roughened around the second embedment 22. Concrete is poured between two adjacent reinforced concrete columns 2 in the first direction and is made to cover the second embedment 22 between the two adjacent reinforced concrete columns 2.
Specifically, the base 1 is subjected to seat slurry treatment by adopting high-strength seat slurry, and simultaneously, the reinforced concrete columns 2 around the second embedded part 22 are subjected to chiseling treatment, after preparation work such as measurement and seat slurry is completed, 4 groups of reinforced concrete columns 2 are installed on the adjusting mechanism 3 and are moved to the mark points 12 of the base 1 under the guidance of the adjusting mechanism 3, the reinforced concrete columns 2 are sequentially installed according to the procedure, and pouring construction of the reverse bank 4 is performed after the installation is completed for 100 m. In addition, before pouring the counter-sill 4, the positioning and elevation of the first embedded part 21 need to be repeatedly detected, and concrete can be poured after the fact that the acceptance standard is met is confirmed. Wherein, the gap between the base 1 and the reinforced concrete upright post 2 can be filled by carrying out seat slurry treatment on the base 1. And if the grouting treatment is not performed, grouting operation can be performed between the base 1 and the reinforced concrete column 2 after the reinforced concrete column 2 is installed or after the adjusting mechanism 3 is removed so as to fill gaps between the base 1 and the reinforced concrete column 2. The cement-based dry mixture is formed by taking cement as a binding agent, high-strength fine aggregate, a composite expansion agent, a water reducing agent and other admixtures and other additional composite materials, has the performances of early strength, high strength, micro expansion, no shrinkage, no sagging, easy construction and the like, has thixotropic property, plasticity and good hardening water retention after being added with water and stirred, and can avoid the phenomena of overlarge fluidity, difficult construction, too coarse particles, poor cohesiveness, serious bleeding, cracking and explosion of the other grouting materials.
During construction, the second embedded part 22 on the reinforced concrete upright post 2 and the reinforced concrete part 11 on the base 1 are lapped by adopting the reinforced mesh, two groups of templates are arranged on the reinforced concrete upright posts 2 along the first direction, and the two groups of templates and the reinforced concrete upright posts 2 are matched to form a plurality of pouring areas. And then, setting an elevation control line on the template, and enabling the distance between the elevation control line and the base 1 to be consistent with the set height of the counter-ridge 4. And then pouring concrete into the pouring area, stopping pouring when the poured concrete approaches to the elevation control line, and manually filling the concrete into the pouring area until the filled concrete contacts with the elevation control line. Then the plastering work is carried out, so that the concrete surface is smooth and beautiful.
In addition, when the concrete is poured, the vibration of the concrete is reinforced, and a micro-expanding agent is added into the poured concrete, so that the shrinkage of the concrete is reduced. The adjusting mechanism 3 must not be collided during construction. And the position, the track gauge and the level of the mechanism 3 are adjusted at any time, and the position, the track gauge and the level are found to be adjusted immediately when the acceptance criterion is exceeded. In order to improve the processing precision, joints between the templates and the reinforced concrete upright posts 2 and joints between the templates and the base 1 are required to be processed, and silica gel can be used for sealing during processing, so that the appearance quality of the concrete is prevented from being influenced due to slurry leakage in the pouring process.
In addition, the concrete should be poured in layers and can be adjusted appropriately according to the weather conditions of the day, but it is generally not preferable to exceed 30cm. The vibrating time is not too long or too short, and segregation and bleeding layering phenomena can occur if the vibrating time is too long. If the vibrating time is too short, the compactness of the mixture is poor. The concrete is not sunk, no bubbles appear, the surface flatness is the standard to judge whether the concrete is compact, and the vibration time at one part is not less than 10s. The insertion points of the plug-in vibrator are uniformly arranged, and the plug-in vibrator should be quickly plugged and slowly plugged, so that the plug-in vibrator is uniformly vibrated one by one. The vibration movement distance is generally in the range of 30-40 cm, or not more than 1.5 times of the vibration radius. When the concrete close to the side mould is vibrated, the distance between the vibrating rod and the side mould is controlled within the range of 5-10 cm. In the vibrating operation process, when each part is vibrated, the vibrating plate is slowly lifted out while vibrating, and the vibrating plate cannot collide with the templates, the reinforcing steel bars, the embedded parts and the like, so that the reinforcing steel bars are prevented from being shifted and the templates are prevented from being deformed due to vibration.
The time for inserting the vibrator each time is determined according to the conditions that the concrete does not obviously sink, bubble and the like, and the time is controlled to be in the range of 20-30 s. When the upper layer is vibrated, the vibrator is inserted into the 10cm position of the lower layer of concrete, so that the effect of firm combination between the upper layer of concrete and the lower layer of concrete is achieved. The related manager will choose the vibrator according to the engineering essence, actual situation, etc. The vibrators are classified into low frequency, intermediate frequency and high frequency. Low frequency: 1500-3000 times/min; intermediate frequency: 5000-8000 times/min; high frequency: more than 10000 times/min. For the application of larger particle size of stones, low frequency is selected, and for the application of large slump of the mixture, high frequency is selected. The vibrator should be inserted vertically when in use, and inserted quickly and pulled out slowly, so as to avoid leaving gaps in the concrete. The time of each insertion and vibration is about 20-30 seconds, and the concrete is not obviously sunk, no air bubbles appear and the grouting is started. The vibrating time is not too long, sand and cement paste are separated, stones sink, and a sand layer is formed on the surface of the concrete, so that the quality of the concrete is affected. The vibrator should be inserted into the lower layer concrete for 10cm during vibration to strengthen the combination of the upper layer concrete and the lower layer concrete. The distance between the vibrating and inserting is 30-50cm, so as to prevent vibration leakage. The template is not touched during vibration, the steel bars and the embedded parts are not needed to be touched, when the template is vibrated nearby, the template is tapped by a wood hammer, and when the steel bars are densely arranged and the corners of the template are matched, iron rods are used for tamping.
The embodiment of the application also provides a column type inspection pit, which is constructed by the construction method of the column type inspection pit in any embodiment.
When the column type inspection pit is constructed and obtained by the construction method, the prefabricated reinforced concrete upright post 2 is matched with the cast-in-situ base 1 and the inverted ridge 4, so that the on-site construction period of the inspection pit upright post can be shortened while the bearing capacity of a foundation is ensured, the construction efficiency is improved, and meanwhile, the height and the position of the prefabricated reinforced concrete upright post 2 are adjusted by the aid of the adjusting mechanism 3 before the inverted ridge 4 is poured, so that the construction precision of the prefabricated reinforced concrete upright post 2 is improved, and the construction effect of the column type inspection pit is guaranteed.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples only represent a few embodiments of the present application, which are described in more detail and are not to be construed as limiting the scope of the claims. It should be noted that it would be apparent to those skilled in the art that various modifications and improvements could be made without departing from the spirit of the present application, which would be within the scope of the present application. Accordingly, the scope of protection of the present application is to be determined by the claims appended hereto.
Claims (10)
1. A construction method of a column type inspection pit, comprising:
pouring a base;
installing an adjusting mechanism around the base, and installing a plurality of prefabricated reinforced concrete upright posts on the adjusting mechanism;
controlling the adjusting mechanism to adjust the height and the position of the reinforced concrete columns on the base, so that the height of each reinforced concrete column is consistent with the set height, and the distance between two adjacent reinforced concrete columns along the first direction is consistent with the set distance;
pouring a reverse ridge on the base, and enabling the poured reverse ridge to be in contact with the reinforced concrete upright post;
and removing the adjusting mechanism, installing the steel rail on the plurality of reinforced concrete upright posts arranged along the first direction, and enabling the steel rail to be parallel to the first direction.
2. The construction method of a column inspection pit according to claim 1, wherein the construction method of a column inspection pit further comprises: prefabricating a plurality of reinforced concrete columns;
prefabricating a plurality of reinforced concrete columns, including:
installing a first embedded part and a second embedded part on the die, and enabling the first embedded part and the second embedded part to be respectively close to two sides of the die, which are away from each other;
placing a die and enabling the first embedded part to be in contact with the object bearing surface;
pouring concrete into the mold to enable the concrete to be in contact with the first embedded part and the second embedded part;
disassembling the mould to obtain a reinforced concrete upright post;
the die comprises a bottom die and four side dies, the four side dies are connected in a mutually perpendicular mode, the bottom die is connected with the four side dies in a perpendicular mode, the first embedded part is arranged on the bottom die, and the second embedded part penetrates through the two side dies which are arranged oppositely.
3. The method of constructing a column inspection pit according to claim 2, wherein the installing an adjusting mechanism around the base comprises:
two adjusting frames are arranged on two sides of the base or on the upper side of the base along the second direction;
mounting the connecting frame on the two adjusting frames, and enabling the connecting frame to be parallel to the second direction;
the second direction is perpendicular to the first direction, and the adjusting mechanism comprises a connecting frame and two adjusting frames.
4. A method of constructing a column inspection pit according to claim 3, wherein said mounting the reinforced concrete column on the adjusting mechanism comprises:
connecting two reinforced concrete upright posts through a first connecting piece to form a first upright post group;
connecting the two first upright post groups through a second connecting piece to form a second upright post group;
connecting the first connecting piece or the second connecting piece with a connecting frame of the adjusting mechanism;
the first connecting piece is perpendicular to the second connecting piece.
5. The method of constructing a column inspection pit according to claim 4, wherein the connecting the two reinforced concrete columns by the first connecting member comprises:
and connecting the two sides of the first connecting piece with the first embedded pieces of the two reinforced concrete upright posts respectively.
6. The method of constructing a column inspection pit according to claim 2, wherein the controlling and adjusting mechanism adjusts the height and position of the reinforced concrete columns so that the distance between two adjacent reinforced concrete columns in the first direction coincides with the set distance, comprises:
the control and adjustment mechanism is used for placing the reinforced concrete upright post on a marking point on the base, and enabling a connecting line between a first embedded part on the reinforced concrete upright post and the marking point to be perpendicular to the base;
the base is provided with a plurality of marking points, and the distance between two adjacent marking points along the first direction is consistent with the set distance.
7. The method of constructing a column inspection pit according to claim 2, wherein the pouring the counter ridge on the base and bringing the poured counter ridge into contact with the reinforced concrete column comprises:
roughening the part of the reinforced concrete upright post around the second embedded part;
and pouring concrete between two adjacent reinforced concrete columns along the first direction, and enabling the concrete to cover a second embedded part between the two adjacent reinforced concrete columns.
8. The method of constructing a column inspection pit according to claim 7, wherein the step of pouring the counter-sill on the base and bringing the poured counter-sill into contact with the reinforced concrete column, further comprises:
arranging two groups of templates on a plurality of reinforced concrete columns along a first direction, and enabling the two groups of templates to be matched with the reinforced concrete columns to form a plurality of pouring areas;
setting an elevation control line on the template, and enabling the distance between the elevation control line and the base to be consistent with the set height of the counter ridge;
pouring concrete into the pouring area, and stopping pouring when the poured concrete approaches to the elevation control line;
and manually filling concrete into the pouring area until the filled concrete contacts with the elevation control line.
9. The method of constructing a column inspection pit according to claim 2, wherein the dismounting adjustment mechanism mounts the rail on a plurality of reinforced concrete columns arranged in a first direction, comprising:
after the reverse ridge maintenance strength reaches the set strength, the first embedded part is detached from the adjusting mechanism;
and connecting the steel rail with the first embedded part, and performing adjustment and calibration to enable the steel rail to be parallel to the first direction.
10. A column type inspection pit, characterized by being constructed by the construction method of the column type inspection pit according to any one of claims 1 to 9.
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| CN202410019411.9A CN117888753A (en) | 2024-01-05 | 2024-01-05 | Column type inspection pit and construction method thereof |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002121747A (en) * | 2000-08-09 | 2002-04-26 | Nippon Steel Corp | Semi-fixed direct foundation of steel column and pile foundation structure |
| CN107268348A (en) * | 2017-07-25 | 2017-10-20 | 中铁六局集团天津铁路建设有限公司 | Subway column check pit construction method |
| CN112049146A (en) * | 2020-09-29 | 2020-12-08 | 重庆建工第三建设有限责任公司 | Steel structure foundation embedded part and technological process thereof |
| CN113914682A (en) * | 2021-09-26 | 2022-01-11 | 广州地铁设计研究院股份有限公司 | Prefabricated cavity column assembly type column type maintenance pit and construction method thereof |
| CN217924959U (en) * | 2022-05-06 | 2022-11-29 | 山西三建集团有限公司 | Accurate positioning device for steel beam connection embedded bottom plate of frame structure workshop |
| CN116006005A (en) * | 2022-09-05 | 2023-04-25 | 中国铁路设计集团有限公司 | Column type inspection pit structure of fully assembled filling core and construction method |
| CN116695775A (en) * | 2023-04-28 | 2023-09-05 | 中铁(广州)投资发展有限公司 | Construction method for assembled type maintenance pit of subway train |
-
2024
- 2024-01-05 CN CN202410019411.9A patent/CN117888753A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002121747A (en) * | 2000-08-09 | 2002-04-26 | Nippon Steel Corp | Semi-fixed direct foundation of steel column and pile foundation structure |
| CN107268348A (en) * | 2017-07-25 | 2017-10-20 | 中铁六局集团天津铁路建设有限公司 | Subway column check pit construction method |
| CN112049146A (en) * | 2020-09-29 | 2020-12-08 | 重庆建工第三建设有限责任公司 | Steel structure foundation embedded part and technological process thereof |
| CN113914682A (en) * | 2021-09-26 | 2022-01-11 | 广州地铁设计研究院股份有限公司 | Prefabricated cavity column assembly type column type maintenance pit and construction method thereof |
| CN217924959U (en) * | 2022-05-06 | 2022-11-29 | 山西三建集团有限公司 | Accurate positioning device for steel beam connection embedded bottom plate of frame structure workshop |
| CN116006005A (en) * | 2022-09-05 | 2023-04-25 | 中国铁路设计集团有限公司 | Column type inspection pit structure of fully assembled filling core and construction method |
| CN116695775A (en) * | 2023-04-28 | 2023-09-05 | 中铁(广州)投资发展有限公司 | Construction method for assembled type maintenance pit of subway train |
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