CN111267215A - Multipurpose hole tool for precast concrete stair sections and application method - Google Patents
Multipurpose hole tool for precast concrete stair sections and application method Download PDFInfo
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- CN111267215A CN111267215A CN202010189129.7A CN202010189129A CN111267215A CN 111267215 A CN111267215 A CN 111267215A CN 202010189129 A CN202010189129 A CN 202010189129A CN 111267215 A CN111267215 A CN 111267215A
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- concrete stair
- precast concrete
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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
- B28B13/00—Feeding the unshaped material to moulds or apparatus for producing shaped articles; Discharging shaped articles from such moulds or apparatus
- B28B13/04—Discharging the shaped articles
- B28B13/06—Removing the shaped articles from moulds
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F11/00—Stairways, ramps, or like structures; Balustrades; Handrails
- E04F11/02—Stairways; Layouts thereof
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- Engineering & Computer Science (AREA)
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- Ceramic Engineering (AREA)
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- Structural Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Steps, Ramps, And Handrails (AREA)
Abstract
The invention discloses a multipurpose hole tool of a precast concrete stair section and an application method, belonging to the technical field of civil engineering, wherein the precast concrete stair section is only provided with four multipurpose hole tools, one of the multipurpose hole tools is multipurpose, and the multipurpose hole tool is used for demoulding in the precast concrete stair section preparation stage; the hoisting device is also used for hoisting the precast concrete stair sections for transportation and installation; the prefabricated concrete stair support system is used for mounting and fixing the bottom of the support system, so that the safety and stability of the prefabricated concrete stair support system are obviously improved; the prefabricated concrete stair section is also used for mounting and connecting the prefabricated concrete stair section with a support, and the connection is convenient and reliable; compared with the conventional method, two demoulding lifting hooks and four installation lifting nails are saved. By the technical means, the stair is good in quality, high in efficiency, safe, reliable and low in cost.
Description
Technical Field
The invention belongs to the technical field of civil engineering, relates to an assembly type building, and particularly relates to a multipurpose hole tool of a precast concrete stair section and an application method.
Background
The stair construction quality of the building engineering is not easy to guarantee, the efficiency is low, the labor and the time are wasted, the construction cost is high, and the stair construction method is a common phenomenon in the stair construction process. The assembled type stair has the advantages of excellent quality, high working efficiency, low construction cost, environmental friendliness and the like, and is a common consensus in the industry. But the quality, efficiency and cost of most technical schemes in the market are still unsatisfactory.
The invention discloses an assembled concrete stair slow platform beam slab and a construction method thereof, wherein a stair slow platform plate adopts a cantilever plate form taking a slow platform beam as a support, and the concrete stair slow platform beam and the slow platform plate are integrally prefabricated and installed, so that the problems of difficult construction, increased working procedures, poor appearance quality and the like of the concrete stair slow platform beam slab are solved; an external throwing steel bar at the end of the prefabricated slow platform beam is cancelled, and a method of arranging a steel bar mechanical connection straight thread sleeve at the end of the prefabricated slow platform beam is adopted to connect an internal longitudinal bar of the slow platform beam of the stair and an external steel bar section which is connected at the back and extends into a support of the slow platform beam of the stair; the connecting bolt of one end pier head is screwed into the embedded lifting point nut of the stair slow platform beam, and the concrete or grouting material is poured into the mounting hole of the precast concrete stair section to connect the precast concrete stair section and the stair slow platform beam, so that the embedded lifting point nut of the stair slow platform beam is multipurpose, and the connection is more convenient and reliable. However, the number of embedded nuts in the scheme is too large, so that the cost is increased, and the supporting quality is not easy to guarantee by adopting the traditional template system, the efficiency is low, the construction cost is high, and materials are wasted.
The invention patent application specification CN201910048872.8 discloses an installation node and an installation method of a support hinged concrete prefabricated part, wherein a pre-embedded iron piece is arranged at the bottom of the support end of the support hinged concrete prefabricated part, the center of the pre-embedded iron piece is provided with a hole, and the upper side of the hole is provided with an inverted frustum-shaped prefabricated hole; placing the support position of the concrete prefabricated part on the support concrete member, and paving mortar on the top surface outside the connecting hole; hoisting the concrete prefabricated part by using the hoisting rod and inserting the concrete prefabricated part into the connecting hole, removing the lifting hook, rotating the hoisting rod to adjust the installation height of the concrete prefabricated part, and removing the hoisting rod after the strength of the mortar reaches 2 MPa; and inserting connecting reinforcing steel bars into the inverted frustum-shaped hole and the connecting hole, and plastering the surface after pouring concrete grouting material. The invention adopts the recyclable suspender, the suspender not only can be used as a hanging ring, but also can be used for adjusting the mounting height and the mounting precision of the concrete prefabricated part, the steel consumption can be saved, the mounting working strength can be reduced, the mounting efficiency, the mounting precision and the mounting quality can be improved, and the construction cost can be reduced. But the embedded iron part of this scheme preparation is complicated and connect the hoist inconvenient, and efficiency and cost still have optimization space.
There is a need for further optimization and improvement of the above-mentioned technical drawbacks.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the multipurpose hole tool has multiple purposes, fully plays a role, ensures that the finished concrete stair product has excellent quality, has high production, preparation, construction and installation efficiency, is safe and reliable, saves raw materials, ensures that the environment is more friendly, and reduces the comprehensive construction cost.
The multipurpose hole utensil of precast concrete stair section sets up the platform department at concrete stair section both ends, and every end sets up two, characterized by: the multipurpose hole tool comprises a hole tool body and an inner wall thread section, wherein the hole tool body is a hollow pipe, and the inner wall thread section is arranged on the inner wall of the hole tool body; the inner wall thread section is a standard thread, and the inner wall thread section is arranged in the full length of the inner wall of the hole tool body or in the local section of the inner wall of the hole tool body.
The application method of the precast concrete stair section multipurpose hole tool is characterized in that: the multipurpose hole tool of the precast concrete stair section is applied to demould the precast concrete stair section,
in the stage of preparing the precast concrete stair sections, the strength of concrete reaches the form removal strength, and the top surfaces of the precast concrete stair sections are placed upwards by adopting a turnover process technology; and removing the molds on the top surface, the side surface and the end surface of the concrete stair section, taking the bolt lifting tool, screwing the bolt lifting tool into the inner wall thread section of the multipurpose hole tool, lifting, separating the precast concrete stair section from the bottom surface mold, and lifting to a cleaning, inspecting or storage and transportation station to finish the application of the multipurpose hole tool to the demolding of the precast concrete stair section.
The application method of the precast concrete stair section multipurpose hole tool is characterized in that: the multi-purpose hole tool of the precast concrete stair sections is applied to hoist the precast concrete stair sections,
and in the stage of transporting and installing the precast concrete stair sections, taking the bolt lifting tool, screwing the bolt lifting tool into the inner wall thread section of the multipurpose hole tool, lifting the precast concrete stair sections from a storage site or a transport tool, and lifting the precast concrete stair sections to a transporting or installing station to finish the application of hoisting the precast concrete stair sections by the multipurpose hole tool.
The application method of the precast concrete stair section multipurpose hole tool is characterized in that: the multipurpose hole tool of the precast concrete stair sections is applied to install and stably connect the precast concrete stair supporting system,
the stair platform plate adopts an assembly type construction stage, and a supporting system for installing a precast concrete stair is adopted when the upper layer of stair platform plate is installed; the base of the supporting system is connected by adopting a bolt, and the bolt is screwed into the inner wall thread section of the multipurpose hole tool; or the base of the supporting system adopts plug connection, and the tenon is inserted into the multipurpose hole tool, so that the application of the multipurpose hole tool to the stable connection of the prefabricated concrete stair supporting system is completed.
The application method of the precast concrete stair section multipurpose hole tool is characterized in that: the multipurpose hole tool of the precast concrete stair section is applied to connect and install the precast concrete stair section and the support,
pouring grouting material or high-strength mortar into the grooves of the multipurpose hole tool and the lower support thereof, inserting the connecting steel bar section into the grooves, leveling the top surface and polishing; and finishing the application of the connection and installation of the multipurpose hole tool to the precast concrete stair sections and the support when the strength of the grouting material or the high-strength mortar meets the design requirement.
Through the design scheme, the invention can bring the following beneficial effects: the prefabricated concrete stair section is only provided with four multipurpose holes, one multipurpose hole is used for multiple purposes, and the hole is used for demoulding in the stage of preparing the prefabricated concrete stair section; the hoisting device is also used for hoisting the precast concrete stair sections for transportation and installation; the prefabricated concrete stair support system is used for mounting and fixing the bottom of the support system, so that the safety and stability of the prefabricated concrete stair support system are obviously improved; the prefabricated concrete stair section is also used for mounting and connecting the prefabricated concrete stair section with a support, and the connection is convenient and reliable; compared with the conventional method, two demoulding lifting hooks and four installation lifting nails are saved. By the technical means, the stair is good in quality, high in efficiency, safe, reliable and low in cost.
Drawings
The invention is further described with reference to the following figures and detailed description:
FIG. 1 is a top view of the multipurpose aperture tool of the present invention.
FIG. 2 is a schematic cross-sectional view of the multipurpose hole tool of the present invention.
Fig. 3 is a schematic plan view of a precast concrete stair section according to the present invention.
Fig. 4 is a schematic sectional view of a precast concrete stair section according to the present invention.
Fig. 5 is a schematic plan view of a precast concrete stair section at an installation station according to the present invention.
Fig. 6 is a schematic cross-sectional view of a precast concrete stair section at an installation site according to the present invention.
Fig. 7 is a schematic plan view illustrating the installation of the precast concrete stair section according to the present invention.
Fig. 8 is a schematic sectional view illustrating the installation of the precast concrete stair section according to the present invention.
In the figure, 1-stair section, 2-multipurpose hole tool, 3-inner wall thread section and 4-hole tool body.
Detailed Description
The multipurpose hole tool of the precast concrete stair section is arranged at platforms at two ends of a concrete stair section 1, as shown in figures 1 and 2, the multipurpose hole tool 2 comprises a hole tool body 4 and an inner wall thread section 3, the hole tool body 4 is a hollow pipe, and the inner wall of the hole tool body 4 is provided with the inner wall thread section 3; the inner wall thread section 3 is a standard thread, and the inner wall thread section 3 is arranged in the whole length of the inner wall of the hole tool body 4 or in the local section of the inner wall of the hole tool body 4.
In the construction of the fabricated concrete stairway, as shown in fig. 3 to 8, the multipurpose hole of the prefabricated concrete stairway section includes several application methods,
demoulding for precast concrete stair section 1
In the stage of preparing the precast concrete stair section 1, after the strength of concrete reaches the stripping strength, the top surface of the precast concrete stair section 1 is placed upwards by adopting the traditional overturning process technology; removing the moulds on the top surface, the side surface and the end surface of the concrete stair section 1, taking a bolt lifting appliance, screwing the bolt lifting appliance into the threaded section 3 on the inner wall of the multipurpose hole tool 2, lifting, separating the precast concrete stair section 1 from the mould on the bottom surface, lifting and placing on a cleaning, inspecting or storing and transporting station to finish the application of the multipurpose hole tool 2 to the demoulding of the precast concrete stair section 1;
hoisting for concrete stair section 1
In the stage of transporting and installing the precast concrete stair section 1, a bolt lifting appliance is taken, the bolt lifting appliance is screwed into the inner wall thread section 3 of the multipurpose hole tool 2, the precast concrete stair section 1 is lifted from a storage site or a transport tool and is lifted to a transporting or installing station, and the application of the multipurpose hole tool 2 in lifting the precast concrete stair section 1 is completed;
thirdly, a nut or a jack for installing the precast concrete stair support system for safe and stable connection
When the stair platform plate is adopted to adopt the assembly type construction embodiment, a support system for installing the precast concrete stair is adopted for installing the upper layer of stair platform plate; when the base of the supporting system is connected by adopting a bolt, the bolt is directly screwed into the inner wall thread section 3 of the multipurpose hole tool 2; or when the base of the supporting system adopts the plug-in connection, the tenon is directly inserted into the multipurpose hole tool 2;
fourthly, the prefabricated concrete stair sections and the supports are connected and installed
After the three purposes of the multipurpose hole tool 2 are completed, the multipurpose hole tool 2 is used for connecting and installing the precast concrete stair section 1 and the support, grouting material or high-strength mortar is poured into the multipurpose hole tool 2 and the grooves of the support at the lower part of the multipurpose hole tool, connecting steel bar sections are inserted into the grooves, and then the top surface is leveled and polished; and when the strength of the grouting material or the high-strength mortar meets the design requirement, the whole application of the multipurpose hole tool 2 is completed.
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 should be included in the protection scope of the present invention.
Claims (5)
1. The multipurpose hole utensil of precast concrete stair section sets up the platform department at concrete stair section (1) both ends, and every end sets up two, characterized by: the multipurpose hole tool (2) comprises a hole tool body (4) and an inner wall thread section (3), the hole tool body (4) is a hollow pipe, and the inner wall of the hole tool body (4) is provided with the inner wall thread section (3); the inner wall thread section (3) is a standard thread, the inner wall of the inner wall thread section (3) is arranged in the full length of the inner wall of the hole tool body (4), or in the local section of the inner wall of the hole tool body (4).
2. The application method of the precast concrete stair section multipurpose hole tool is characterized in that: use of the multipurpose hole tool for precast concrete stair sections according to claim 1 for demold of precast concrete stair sections (1),
in the stage of preparing the precast concrete stair sections, the strength of concrete reaches the form removal strength, and the top surfaces of the concrete stair sections (1) are placed upwards by adopting a turnover process technology; removing the molds on the top surface, the side surface and the end surface of the concrete stair section (1), taking a bolt lifting tool, screwing the bolt lifting tool into the inner wall thread section (3) of the multipurpose hole tool (2), lifting, separating the precast concrete stair section (1) from the mold on the bottom surface, and lifting to a cleaning, inspecting or storage and transportation station to finish the application of the multipurpose hole tool (2) to the demolding of the precast concrete stair section (1).
3. The application method of the precast concrete stair section multipurpose hole tool is characterized in that: the multi-purpose hole tool of the precast concrete stair section of claim 1 is applied to hoist the precast concrete stair section (1),
and in the stage of transporting and installing the precast concrete stair sections (1), taking bolt lifting tools, screwing the bolt lifting tools into the inner wall thread sections (3) of the multipurpose hole tools (2), lifting the precast concrete stair sections (1) from a storage site or a transport tool, and lifting the precast concrete stair sections to a transportation or installation station to finish the application of the hoisting of the multipurpose hole tools (2) to the precast concrete stair sections (1).
4. The application method of the precast concrete stair section multipurpose hole tool is characterized in that: the multi-purpose hole tool of the precast concrete stair sections according to claim 1 is applied to install the precast concrete stair support system for stable connection,
the stair platform plate adopts an assembly type construction stage, and a supporting system for installing a precast concrete stair is adopted when the upper layer of stair platform plate is installed; the base of the supporting system is connected by adopting a bolt, and the bolt is screwed into the inner wall thread section (3) of the multipurpose hole tool (2); or the base of the supporting system adopts plug connection, and the tenon is inserted into the multipurpose hole tool (2) to finish the application of the multipurpose hole tool (2) to the stable connection of the prefabricated concrete stair supporting system.
5. The application method of the precast concrete stair section multipurpose hole tool is characterized in that: the prefabricated concrete stair section multipurpose hole tool of claim 1 is used for connecting and installing the prefabricated concrete stair section (1) and the support,
pouring grouting material or high-strength mortar into the grooves of the multipurpose hole tool (2) and the lower support thereof, inserting the connecting steel bar section into the grooves, leveling the top surface and polishing the surface; and (3) completing the application of the multipurpose hole tool (2) to the connection and installation of the precast concrete stair section (1) and the support when the strength of the grouting material or the high-strength mortar meets the design requirement.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2019112727378 | 2019-12-12 | ||
| CN201911272737 | 2019-12-12 |
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| Publication Number | Publication Date |
|---|---|
| CN111267215A true CN111267215A (en) | 2020-06-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010189129.7A Pending CN111267215A (en) | 2019-12-12 | 2020-03-18 | Multipurpose hole tool for precast concrete stair sections and application method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112814294A (en) * | 2020-12-29 | 2021-05-18 | 北京观唐城投建设有限公司 | Novel tongue-and-groove connecting structure of precast concrete ladder beam and construction process thereof |
| CN115324319A (en) * | 2022-08-08 | 2022-11-11 | 中国建筑第八工程局有限公司 | Installation positioning device for prefabricated staircase and construction method thereof |
-
2020
- 2020-03-18 CN CN202010189129.7A patent/CN111267215A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112814294A (en) * | 2020-12-29 | 2021-05-18 | 北京观唐城投建设有限公司 | Novel tongue-and-groove connecting structure of precast concrete ladder beam and construction process thereof |
| CN115324319A (en) * | 2022-08-08 | 2022-11-11 | 中国建筑第八工程局有限公司 | Installation positioning device for prefabricated staircase and construction method thereof |
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