CN110847230A - Basement retaining wall concrete pouring construction process - Google Patents

Basement retaining wall concrete pouring construction process Download PDF

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Publication number
CN110847230A
CN110847230A CN201911102505.8A CN201911102505A CN110847230A CN 110847230 A CN110847230 A CN 110847230A CN 201911102505 A CN201911102505 A CN 201911102505A CN 110847230 A CN110847230 A CN 110847230A
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China
Prior art keywords
concrete
layer
retaining wall
construction process
basement retaining
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Withdrawn
Application number
CN201911102505.8A
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Chinese (zh)
Inventor
张瑨
潘威
方芳
郭翥
李娜
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Priority to CN201911102505.8A priority Critical patent/CN110847230A/en
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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D29/00—Independent underground or underwater structures; Retaining walls
    • E02D29/045—Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D15/00—Handling building or like materials for hydraulic engineering or foundations
    • E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
    • 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
    • E04B1/0007—Base structures; Cellars
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G11/00—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs
    • E04G11/06—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for walls, e.g. curved end panels for wall shutterings; filler elements for wall shutterings; shutterings for vertical ducts
    • E04G11/08—Forms, which are completely dismantled after setting of the concrete and re-built for next pouring
    • 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
    • E04G9/00—Forming or shuttering elements for general use
    • E04G9/02—Forming boards or similar elements
    • E04G9/06—Forming boards or similar elements the form surface being of metal
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2250/00—Production methods
    • E02D2250/0007—Production methods using a mold
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2250/00—Production methods
    • E02D2250/0023—Cast, i.e. in situ or in a mold or other formwork
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2300/00—Materials
    • E02D2300/0004—Synthetics
    • E02D2300/0018—Cement used as binder
    • E02D2300/002—Concrete
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2300/00—Materials
    • E02D2300/0026—Metals
    • E02D2300/0029—Steel; Iron

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Mechanical Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)

Abstract

The invention provides a concrete pouring construction process for a basement retaining wall, which comprises the following steps: excavating a foundation pit, arranging a formwork, installing a formwork, forming a mold cavity between the formwork and the inner wall of the foundation pit, arranging a reinforcing steel bar frame in the mold cavity, pouring concrete layer by layer, and maintaining a basement retaining wall; by adopting the technical scheme of the invention, the reinforcing steel bar frame is embedded in the concrete, the structural strength and the bearing capacity of the basement wall protector are enhanced, the surface flatness of the basement wall protector is improved by adopting the steel surface template, the air doped in the concrete can fully escape by adopting the layer-by-layer pouring construction process, the concrete is condensed and compacted, the quality of the concrete engineering is improved, the surface of the basement wall protector can be effectively prevented from cracking by scraping the concrete in the initial setting state, the surface of the poured basement wall protector is fully maintained, and the construction quality of the concrete engineering is ensured.

Description

Basement retaining wall concrete pouring construction process
Technical Field
The invention relates to the technical field of underground engineering construction, in particular to a concrete pouring construction process for a basement retaining wall.
Background
Along with the continuous development of modern urbanization, the urban scale is larger and larger, the urban ground space can not meet the production and living requirements of people gradually, people turn to expand the space below the ground, in basements with various purposes, basement retaining walls are required to be connected with buildings corresponding to the ground, so the requirements on the bearing capacity and the structural strength of the basement retaining walls are higher, the existing basement retaining walls are generally formed by pouring concrete, if the basement retaining walls are not properly treated in the construction process, a large amount of air can be doped into the concrete, and the construction quality and the bearing strength of the basement retaining walls are affected.
Disclosure of Invention
In order to solve the technical problem, the invention provides a concrete pouring construction process for a basement retaining wall.
The invention is realized by the following technical scheme.
The invention provides a concrete pouring construction process for a basement retaining wall, which comprises the following steps:
the method comprises the following steps: digging a foundation pit on the ground, providing a mould frame, wherein the mould frame is horizontally arranged at the bottom of the foundation pit, a face template is arranged on the side surface of the mould frame, the face template and the inner wall of the foundation pit are opposite to each other, and a space between the face template and the inner wall of the foundation pit forms a mould cavity;
step two: arranging a reinforcement frame inside the mold cavity, wherein the reinforcement frame comprises a plurality of vertical reinforcements vertically inserted into the mold cavity, a plurality of transverse reinforcements horizontally arranged along the width direction of the mold cavity, and a plurality of longitudinal reinforcements horizontally arranged along the length direction of the mold cavity, and the transverse reinforcements and the longitudinal reinforcements respectively connect at least two vertical reinforcements together;
step three: pouring concrete into the die cavity layer by layer, wherein before each layer of concrete is poured, the previous layer of concrete is required to reach initial setting strength;
step four: and (4) after the last layer of concrete is completely condensed, removing the formwork in the step one to obtain the basement retaining wall.
The concrete in the third step reaches the initial setting strength, which means that the strength of the concrete reaches more than 75% of the strength of the concrete when the concrete is completely set.
In the first step, the formwork is a scaffold which is constructed by arranging a plurality of steel pipes in the vertical direction, the transverse direction and the longitudinal direction respectively, the distance between any two adjacent vertical steel pipes is 600mm to 1100mm, the distance between any two adjacent transverse steel pipes is 600mm to 1100mm, and the distance between any two adjacent longitudinal steel pipes is 600mm to 1100 mm.
And in the first step, a chamfering template is also arranged between the joints of two adjacent side surfaces on the die carrier.
The material of the face template in the first step is steel.
The thickness of the face template is not less than 15 mm.
And in the third step, the thickness of each layer of concrete poured is 0.5m to 0.6 m.
The concrete pouring construction process for the basement retaining wall further comprises the step four of scraping the outer surface of the concrete layer by using an aluminum alloy scraping rule after the step three, then rubbing and pressing the outer surface of the concrete layer for a plurality of times by using a wood washboard to compact the concrete layer, and then performing calendaring by using an iron washboard.
In the third step, the construction process parameters for pouring the concrete layer by layer into the die cavity are as follows: and (2) adopting a tiling mode to pour concrete layer by layer, enabling the concrete falling into the die cavity to be gradually accumulated, enabling the rising speed of the surface height to be less than 1m/h, and adopting a vibrating rod to vibrate during pouring, wherein the insertion depth of the vibrating rod is more than 80% of the thickness of the concrete layer.
And the concrete pouring construction process of the basement retaining wall further comprises the step four of covering geotextile on the surface of the obtained basement retaining wall, and watering and maintaining for at least 7 days.
The invention has the beneficial effects that: by adopting the technical scheme of the invention, a scaffold is used as a support, a steel face template is installed, the requirement of concrete pouring construction on a basement retaining wall structure is met, a reinforcing steel bar frame is arranged between the face template and a die cavity formed by the inner wall of a foundation pit, after the basement retaining wall is poured and formed, the reinforcing steel bar frame is embedded in concrete, the structural strength and the bearing capacity of the basement retaining wall are enhanced, the construction quality is ensured, in addition, the face template and the chamfer template are both made of steel materials, the mechanical processing is convenient, the face template has smaller surface roughness, the surface smoothness of the finally formed concrete retaining wall is favorably improved, the concrete pouring construction adopts a layer-by-layer pouring construction mode, the concrete falling into the bottom has sufficient time to escape air in the concrete, and the concrete is fully compacted after being solidified and formed, the pouring quality is better, simultaneously, the vibrating rod is adopted for vibrating when concrete is poured, air in the concrete can further and fully escape, the concrete pouring construction quality is favorably further improved, after the concrete is completely condensed, the aluminum alloy scraper is firstly used for scraping, then the wood washboard is used for rubbing and pressing, then the iron washboard is used for calendering and reducing the dispersion of water on the surface of the concrete, the surface of the poured and formed basement retaining wall keeps moist after reaching the initial setting strength, the surface of the basement retaining wall is prevented from cracking, a foundation is laid for reasonable maintenance, and finally, the surface of the poured and formed basement retaining wall is sufficiently maintained, so that the construction quality of a concrete engineering is ensured.
Drawings
FIG. 1 is a flow chart of the construction process of the present invention;
fig. 2 is a front view of the present invention when arranging the formwork and the reinforcing cage;
fig. 3 is a plan view showing the arrangement of the formwork and the reinforcing cage according to the present invention.
In the figure: 1-mould frame, 2-face template, 3-reinforcing frame and 4-chamfer template.
Detailed Description
The technical solution of the present invention is further described below, but the scope of the claimed invention is not limited to the described.
As shown in fig. 1, 2 and 3, the invention provides a concrete pouring construction process for a basement retaining wall, which comprises the following steps:
the method comprises the following steps: digging a foundation pit on the ground, providing a mould frame 1, horizontally arranging the mould frame 1 at the bottom of the foundation pit, installing a surface template 2 on the side surface of the mould frame 1, enabling the surface template 2 and the inner wall of the foundation pit to be opposite to each other, and forming a mould cavity by the space between the surface template 2 and the inner wall of the foundation pit; in addition, in the first step, the formwork 1 is a scaffold which is constructed by arranging a plurality of steel pipes in the vertical direction, the transverse direction and the longitudinal direction respectively, the distance between any two adjacent vertical steel pipes is 600mm to 1100mm, the distance between any two adjacent transverse steel pipes is 600mm to 1100mm, and the distance between any two adjacent longitudinal steel pipes is 600mm to 1100 mm.
Step two: arranging a reinforcing bar frame 3 in the die cavity, wherein the reinforcing bar frame 3 comprises a plurality of vertical reinforcing bars inserted in the die cavity along the vertical direction, a plurality of transverse reinforcing bars horizontally arranged along the width direction of the die cavity and a plurality of longitudinal reinforcing bars horizontally arranged along the length direction of the die cavity, and the transverse reinforcing bars and the longitudinal reinforcing bars respectively connect at least two vertical reinforcing bars together;
step three: pouring concrete into the mold cavity layer by layer, wherein before each layer of concrete is poured, the previous layer of concrete is required to reach initial setting strength; further, the concrete reaching the initial setting strength in the third step means that the strength of the concrete reaches more than 75% of the strength of the concrete when the concrete is completely set. Preferably, the thickness of each layer of concrete poured in the third step is 0.5m to 0.6 m. In addition, the construction process parameters for pouring concrete layer by layer into the die cavity in the third step are as follows: and (3) adopting a tiling mode to pour concrete layer by layer, gradually accumulating the concrete falling into the die cavity, wherein the rising speed of the surface height is less than 1m/h, vibrating by adopting a vibrating rod while pouring, and the insertion depth of the vibrating rod is more than 80% of the thickness of the concrete layer.
Step four: and (3) after the last layer of concrete is completely condensed, dismantling the die carrier 1 in the step one to obtain the basement retaining wall.
In addition, a chamfer angle template 4 is also arranged between the joints of two adjacent side surfaces on the die carrier 1 in the first step. The chamfer template 4 is preferably made of steel. The material of the middle surface template 2 in the first step is steel. The thickness of the surface template 2 is not less than 15 mm. By adopting the technical scheme of the invention, the face template 2 and the chamfer template 4 made of steel materials are more convenient to cut, so that the surface roughness of the face template 2 and the chamfer template 4 is lower, and the improvement of the surface flatness of the finally formed basement protection wall is facilitated.
In addition, the basement retaining wall concrete pouring construction process further comprises the step four of scraping the outer surface of the concrete layer by using an aluminum alloy scraping rule after the step three, then rubbing and pressing the outer surface of the concrete layer for a plurality of times by using a wood washboard to compact the concrete layer, and then performing calendaring by using an iron washboard.
In addition, the concrete pouring construction process of the basement retaining wall further comprises the step four of covering geotextile on the surface of the obtained basement retaining wall, and carrying out watering maintenance for at least 7 days.
By adopting the technical scheme of the invention, a scaffold is used as a support, the requirement of concrete pouring construction on a basement retaining wall structure is met by installing the steel face template 2, the reinforcing steel frame 3 is arranged between the face template 2 and a die cavity formed by the inner wall of a foundation pit, after the basement retaining wall is poured and formed, the reinforcing steel frame 3 is buried in concrete, the structural strength and the bearing capacity of the basement retaining wall are enhanced, the construction quality is ensured, in addition, the face template 2 and the chamfer template 4 are both made of steel materials, the mechanical processing is convenient, the face template 2 has smaller surface roughness, the surface smoothness of the finally formed concrete retaining wall is favorably improved, the concrete pouring construction adopts a layer-by-layer pouring construction mode, the concrete falling into the bottom has sufficient time to enable the air in the concrete to escape, and the concrete is fully dense after the concrete is condensed and formed, the pouring quality is better, simultaneously, the vibrating rod is adopted for vibrating when concrete is poured, air in the concrete can further and fully escape, the concrete pouring construction quality is favorably further improved, after the concrete is completely condensed, the aluminum alloy scraper is firstly used for scraping, then the wood washboard is used for rubbing and pressing, then the iron washboard is used for calendering and reducing the dispersion of water on the surface of the concrete, the surface of the poured and formed basement retaining wall keeps moist after reaching the initial setting strength, the surface of the basement retaining wall is prevented from cracking, a foundation is laid for reasonable maintenance, and finally, the surface of the poured and formed basement retaining wall is sufficiently maintained, so that the construction quality of a concrete engineering is ensured.

Claims (10)

1. The basement retaining wall concrete pouring construction process is characterized by comprising the following steps of: the method comprises the following steps:
the method comprises the following steps: digging a foundation pit on the ground, providing a mould frame (1), wherein the mould frame (1) is horizontally arranged at the bottom of the foundation pit, a face template (2) is arranged on the side surface of the mould frame (1), the face template (2) is opposite to the inner wall of the foundation pit, and a space between the face template (2) and the inner wall of the foundation pit forms a mould cavity;
step two: arranging a reinforcement frame (3) in the die cavity, wherein the reinforcement frame (3) comprises a plurality of vertical reinforcements vertically inserted into the die cavity, a plurality of transverse reinforcements horizontally arranged along the width direction of the die cavity and a plurality of longitudinal reinforcements horizontally arranged along the length direction of the die cavity, and the transverse reinforcements and the longitudinal reinforcements respectively connect at least two vertical reinforcements together;
step three: pouring concrete into the die cavity layer by layer, wherein before each layer of concrete is poured, the previous layer of concrete is required to reach initial setting strength;
step four: and (3) after the last layer of concrete is completely condensed, dismantling the formwork (1) in the step one to obtain the basement retaining wall.
2. The basement retaining wall concrete pouring construction process according to claim 1, characterized in that: the concrete in the third step reaches the initial setting strength, which means that the strength of the concrete reaches more than 75% of the strength of the concrete when the concrete is completely set.
3. The basement retaining wall concrete pouring construction process according to claim 1, characterized in that: in the first step, the formwork (1) is a scaffold which is built by arranging a plurality of steel pipes in the vertical direction, the transverse direction and the longitudinal direction respectively, the distance between any two adjacent vertical steel pipes is 600mm to 1100mm, the distance between any two adjacent transverse steel pipes is 600mm to 1100mm, and the distance between any two adjacent longitudinal steel pipes is 600mm to 1100 mm.
4. The basement retaining wall concrete pouring construction process according to claim 1, characterized in that: in the first step, a chamfer angle template (4) is further arranged between the joints of two adjacent side surfaces on the die carrier (1).
5. The basement retaining wall concrete pouring construction process according to claim 1, characterized in that: in the first step, the material of the face template (2) is steel.
6. The basement retaining wall concrete pouring construction process according to claim 5, characterized in that: the thickness of the surface template (2) is not less than 15 mm.
7. The basement retaining wall concrete pouring construction process according to claim 1, characterized in that: and in the third step, the thickness of each layer of concrete poured is 0.5m to 0.6 m.
8. The basement retaining wall concrete pouring construction process according to claim 1, characterized in that: the concrete pouring construction process for the basement retaining wall further comprises the step four of scraping the outer surface of the concrete layer by using an aluminum alloy scraping rule after the step three, then rubbing and pressing the outer surface of the concrete layer for a plurality of times by using a wood washboard to compact the concrete layer, and then performing calendaring by using an iron washboard.
9. The basement retaining wall concrete pouring construction process according to claim 1, characterized in that: in the third step, the construction process parameters for pouring the concrete layer by layer into the die cavity are as follows: and (2) adopting a tiling mode to pour concrete layer by layer, enabling the concrete falling into the die cavity to be gradually accumulated, enabling the rising speed of the surface height to be less than 1m/h, and adopting a vibrating rod to vibrate during pouring, wherein the insertion depth of the vibrating rod is more than 80% of the thickness of the concrete layer.
10. The basement retaining wall concrete pouring construction process according to claim 1, characterized in that: and the concrete pouring construction process of the basement retaining wall further comprises the step four of covering geotextile on the surface of the obtained basement retaining wall, and watering and maintaining for at least 7 days.
CN201911102505.8A 2019-11-12 2019-11-12 Basement retaining wall concrete pouring construction process Withdrawn CN110847230A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201911102505.8A CN110847230A (en) 2019-11-12 2019-11-12 Basement retaining wall concrete pouring construction process

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Application Number Priority Date Filing Date Title
CN201911102505.8A CN110847230A (en) 2019-11-12 2019-11-12 Basement retaining wall concrete pouring construction process

Publications (1)

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CN110847230A true CN110847230A (en) 2020-02-28

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114164929A (en) * 2021-10-21 2022-03-11 王树生 Wall foundation and construction device thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114164929A (en) * 2021-10-21 2022-03-11 王树生 Wall foundation and construction device thereof

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Application publication date: 20200228