CN111636411A - WAC construction method for connecting underground continuous wall panels of storage box garage - Google Patents

WAC construction method for connecting underground continuous wall panels of storage box garage Download PDF

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Publication number
CN111636411A
CN111636411A CN202010425136.2A CN202010425136A CN111636411A CN 111636411 A CN111636411 A CN 111636411A CN 202010425136 A CN202010425136 A CN 202010425136A CN 111636411 A CN111636411 A CN 111636411A
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CN
China
Prior art keywords
wall
underground
shaped
web plate
reinforcement cage
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202010425136.2A
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Chinese (zh)
Inventor
徐明锋
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Hangzhou Yunbo receiving Library Technology Co.,Ltd.
Original Assignee
Technology Co ltd Zhejiang Cloud Park
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Technology Co ltd Zhejiang Cloud Park filed Critical Technology Co ltd Zhejiang Cloud Park
Priority to CN202010425136.2A priority Critical patent/CN111636411A/en
Publication of CN111636411A publication Critical patent/CN111636411A/en
Pending legal-status Critical Current

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Classifications

    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/18Bulkheads or similar walls made solely of concrete in situ
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D17/00Excavations; Bordering of excavations; Making embankments
    • E02D17/02Foundation pits
    • E02D17/04Bordering surfacing or stiffening the sides of foundation pits
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D29/00Independent underground or underwater structures; Retaining walls
    • E02D29/04Making large underground spaces, e.g. for underground plants, e.g. stations of underground railways; Construction or layout thereof
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D31/00Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
    • E02D31/10Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against soil pressure or hydraulic pressure
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04HBUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H6/00Buildings for parking cars, rolling stock, aircraft, vessels or like vehicles, e.g. garages
    • E04H6/08Garages for many vehicles
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2250/00Production methods
    • E02D2250/0023Cast, i.e. in situ or in a mold or other formwork
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2300/00Materials
    • E02D2300/0004Synthetics
    • E02D2300/0018Cement used as binder
    • E02D2300/002Concrete
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2300/00Materials
    • E02D2300/0026Metals
    • E02D2300/0029Steel; Iron

Abstract

The invention discloses a WAC construction method for connecting underground continuous wall panels of a storage box garage, which comprises the following steps: determining the number of the containing boxes, digging guide channels and building guide walls; digging a groove section along the guide channel; when the reinforcement cage is manufactured, the I-shaped steel joint end plate and the transverse ribs of the reinforcement cage are welded in a full joint mode, a positioning fixture is used for ensuring that an I-shaped steel joint web plate inclines to one side for a set angle, and the ground connecting wall breadth and the web plate are connected to form a wedge-shaped arch structure; hoisting a reinforcement cage into the groove section; and placing the pouring and tamping pipes in the reinforcement cage, and pouring concrete by using the pouring and tamping pipes until the height of the concrete reaches a preset height to form a single wall body. The invention adopts the I-shaped steel web plate stressed by the wedge-shaped arch, effectively reduces the supporting requirement on the inner support or lining wall of the foundation pit, greatly improves the water stopping and retaining capacity of the diaphragm wall under the action of huge soil pressure and water pressure by the wedge-shaped arch structure, effectively controls the construction cost of deep foundation engineering, shortens the construction period and improves the engineering quality.

Description

WAC construction method for connecting underground continuous wall panels of storage box garage
Technical Field
The invention relates to a deep foundation pit engineering construction technology of a stereo garage, in particular to a WAC construction method for connecting underground continuous wall webs of a storage box garage.
Background
The storage box garage stores the vehicles parked on the road surface in the storage box garage. The problem of difficulty in parking in the central urban area is solved, and the parking is carried out on the way and the way. Utilize the underground space construction containing box garage of central urban area greenery patches, park, public latrine, rubbish transfer station, through unique containing box garage building form, functional design, let containing box garage and original greenery patches, park, public latrine, rubbish transfer station combine together in function, view.
In recent ten years, with the upgrading of equipment, diaphragm walls are widely applied to deep foundation construction. The diaphragm wall is formed by connecting rectangular strip single diaphragm wall through the breadth, the connection of I-shaped steel plate joints at the diaphragm wall section is the most common method at present (as shown in the attached figures 2 and 3), when the diaphragm wall is subjected to huge soil pressure and water pressure, the single diaphragm wall is stressed independently, and the deep foundation pit can be connected into an integral stress unit by depending on an inner support or lining wall of the foundation pit. Meanwhile, under the action of huge soil pressure and water pressure, because transverse ribs are not directly connected between the breadth and the width of the diaphragm wall, slight deformation can possibly cause the reduction of the water stopping capacity of the diaphragm wall, and the dual guarantee is needed through an inner support or a lining wall of a foundation pit.
Disclosure of Invention
The invention aims to provide a construction method of a Wedge-shaped arched stressed I-shaped steel web plate Wedge Arch Connetc (WAC) connected by underground continuous wall webs of a storage box garage, aiming at overcoming the defects of the prior art.
The purpose of the invention is realized by the following technical scheme: the WAC construction method adopts the I-shaped steel web plate stressed by the wedge-shaped arch, so that a virtual arc-shaped diaphragm wall arch structure is formed among a plurality of diaphragm walls, the plurality of diaphragm walls can form a wedge-shaped arch integral stress unit under the condition of no foundation pit support or lining wall under the action of the soil pressure and the water pressure, so that the mechanical balance among all diaphragm walls of the deep foundation pit is formed, the support requirement on the foundation pit support or lining wall is effectively reduced, the water stopping and retaining capacity of the diaphragm walls is greatly improved under the action of the huge soil pressure and the water pressure by the wedge-shaped arch structure, the construction cost of deep foundation engineering can be effectively controlled, the construction period is shortened, and the engineering quality is improved.
The method comprises the following specific steps:
A. determining the construction position and the number of storage boxes of the parking garage, digging a guide channel with corresponding length and building a guide wall with the same length as the guide channel;
B. digging a groove section along the guide channel by adopting a framing scheme of a grooving machine according to requirements under the condition of slurry wall protection;
C. manufacturing a reinforcement cage: the I-steel joint end plate and the transverse rib full-seam welding of the reinforcement cage are adopted, the positioning fixture is used for ensuring that the I-steel joint web plate inclines to one side by an alpha angle, the ground connecting wall width is ensured to be connected with the web plate to form a wedge-shaped arch structure, and alpha is 5 degrees, namely the included angle between the I-steel joint web plate and the I-steel joint end plate is 95 degrees. The I-shaped steel web plate with the inclined angle alpha is used for realizing the formation of a virtual arc-shaped underground diaphragm wall arch stress structure between the underground diaphragm wall webs, the reinforced concrete underground diaphragm wall with good pressure resistance is used for decomposing the soil pressure and the water pressure in the vertical direction into the thrust force vertical to the I-shaped steel web plate, and the soil pressure and the water pressure on the underground diaphragm walls at two sides in the other direction form stress balance, so that the arch stress structure between the underground diaphragm wall webs and the reinforced concrete diaphragm wall is more stable and reliable under the action of the soil pressure and the water pressure;
D. hoisting a steel reinforcement cage into a groove section dug by a grooving machine;
E. placing a pouring and tamping pipe in the reinforcement cage, and pouring concrete by using the pouring and tamping pipe until the height of the concrete reaches a preset height to form a single wall body;
and after the construction of one underground diaphragm wall is finished, repeating the steps A-E, connecting the single wall bodies together by a plurality of underground diaphragm walls to form an underground diaphragm wall, and excavating in the enclosed space of the diaphragm wall to form the deep parking garage.
Furthermore, a virtual underground diaphragm wall arc arch structure is formed among the plurality of underground diaphragm walls by adopting wedge-shaped arch I-shaped steel webs, the plurality of underground diaphragm walls are promoted to form wedge-shaped arch integral stress units under the condition that no foundation pit inner support or lining wall exists under the action of soil pressure and water pressure, and mechanical balance is formed among the underground diaphragm walls of the deep foundation pit.
Furthermore, when the number of the deep wells of the parking garage is more than 1, the deep wells of each parking garage are separated and supported in a mode of additionally arranging a section of underground continuous wall.
The invention has the beneficial effects that: the invention innovatively applies the traditional underground continuous wall construction method according to specific use scenes, and subverts the traditional underground parking garage construction method, so that the constructed underground parking garage has the advantages of effectively reduced construction cost, shortened construction period, effectively guaranteed engineering quality, feasible and easily managed construction method, and is the optimal construction method of the deep-foundation underground parking garage
Drawings
Fig. 1 is a sectional view of a storage box garage building applied to a WAC construction method for connecting underground continuous wall webs of the storage box garage.
Fig. 2 is a conventional framing diagram of a diaphragm wall.
Fig. 3 is a schematic diagram of a conventional i-shaped steel joint of an underground diaphragm wall, wherein a is a plane of an i-shaped steel plate joint of an underground diaphragm wall section, and b is an assembly schematic diagram of an i-shaped steel plate.
FIG. 4 is a wall-connecting and framing scheme diagram of the WAC construction method.
FIG. 5 is a schematic view of the assembly of the WAC method wall-connecting I-steel joint.
Fig. 6 is a schematic view of an arch structure of a virtual ground wall formed by h-shaped steel webs inclined at a certain angle.
Detailed Description
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
As shown in fig. 1, 4, 5 and 6, which are application examples of the present invention, fig. 2 and 3 are diagrams comparing with conventional diaphragm wall construction schemes.
The embodiment is an underground parking garage with four storage boxes arranged in a straight line and constructed by adopting a WAC construction method, a single tube ground connecting wall is divided into eight parts, and an I-shaped steel web plate inclined at a certain angle realizes a virtual arc-shaped ground connecting wall arch structure, so that an inner lining wall structure is simplified, the construction cost of the parking garage is effectively reduced, the construction period is shortened, the engineering quality is effectively guaranteed, and the construction method is feasible and easy to manage. The four-connected cylinder is separated and supported by adding a section of underground continuous wall, and the overall mechanical balance of the four-connected cylinder is still ensured by a virtual arc-shaped ground-connected wall arch structure formed by inclining I-shaped steel webs at a certain angle according to the force transmission and balance principle.
The invention provides a WAC construction method for connecting underground continuous wall panels of a storage box garage, which comprises the following steps:
A. determining the construction position and the number of storage boxes of the parking garage, digging a guide channel with corresponding length and building a guide wall with the same length as the guide channel;
B. digging a groove section along the guide channel by adopting a framing scheme of a grooving machine according to requirements under the condition of slurry wall protection;
C. the steel reinforcement cage is manufactured by adopting the I-shaped steel joint end plate and the transverse rib full joint welding of the steel reinforcement cage, ensuring that an I-shaped steel joint web plate inclines towards one side by α degrees by using a positioning fixture, ensuring that the diaphragm wall web plate is connected with the web plate by an angle of α degrees to form a wedge-shaped arch structure, realizing that a virtual arc-shaped diaphragm wall arch stress structure is formed between the diaphragm wall web plate and the diaphragm wall by the inclined I-shaped steel web plate, and decomposing the soil pressure and the water pressure in the vertical direction into the thrust P vertical to the I-shaped steel web plate by the reinforced concrete diaphragm wall with good pressure resistance as shown in figure 6The method comprises the steps that a reaction force R acting on a single-width diaphragm wall and a supporting force N acting on an arch structure form stress balance with an adjacent diaphragm wall, the arch stress structure between the diaphragm wall and the diaphragm wall is more stable and reliable under the action of soil pressure and water pressure, a square shaft unit is virtualized into eight round shafts with two specification unit widths, the theoretical angle analysis shows that the arch structure can be formed when the included angle between an I-shaped steel joint web plate and an I-shaped steel joint end plate is larger than 90 degrees and smaller than 135 degrees, the failure of the arch structure of the diaphragm wall due to micro deformation is possible when the inclined angle α is too small, the mechanical construction of the diaphragm wall cannot support the angle α to be too large, and the field test shows that α is 5 degrees, the included angle between the I-shaped steel joint web plate and the I-shaped steel joint end plate is 95 degrees, namely, the I-shaped steel end plate is displaced by 70mm to one.
D. Hoisting a steel reinforcement cage into a groove section dug by a grooving machine;
E. placing a pouring and tamping pipe in the reinforcement cage, and pouring concrete by using the pouring and tamping pipe until the height of the concrete reaches a preset height to form a single wall body;
and after the construction of one underground diaphragm wall is finished, repeating the steps A-E, connecting the single wall bodies together by a plurality of underground diaphragm walls to form an underground diaphragm wall, and excavating in the enclosed space of the diaphragm wall to form the deep parking garage.
The invention adopts the wedge-shaped arched I-shaped steel web plate to form a virtual underground diaphragm wall arc arch structure between a plurality of underground diaphragm walls, the action of the soil pressure and the water pressure enables the plurality of underground diaphragm walls to form a wedge-shaped arched integral stress unit under the condition of no foundation pit support or lining wall, and the mechanical balance is formed between each underground diaphragm wall of the deep foundation pit.
When the number of the deep wells of the parking garage is more than 1, the deep wells of each parking garage are separated and supported in a mode of additionally arranging a section of underground continuous wall.
The above-described embodiments are intended to illustrate rather than to limit the invention, and any modifications and variations of the present invention are within the spirit of the invention and the scope of the appended claims.

Claims (3)

1. A WAC construction method for connecting underground continuous wall webs of a storage box garage is characterized by comprising the following steps:
A. determining the construction position and the number of storage boxes of the parking garage, digging a guide channel with corresponding length and building a guide wall with the same length as the guide channel;
B. digging a groove section along the guide channel by adopting a framing scheme of a grooving machine according to requirements under the condition of slurry wall protection;
C. manufacturing a reinforcement cage: the I-steel joint end plate and the transverse rib full-seam welding of the reinforcement cage are adopted, the positioning fixture is used for ensuring that the I-steel joint web plate inclines to one side by an alpha angle, the ground connecting wall width is ensured to be connected with the web plate to form a wedge-shaped arch structure, and alpha is 5 degrees, namely the included angle between the I-steel joint web plate and the I-steel joint end plate is 95 degrees. The I-shaped steel web plate with the inclined angle alpha is used for realizing the formation of a virtual arc-shaped underground diaphragm wall arch stress structure between the underground diaphragm wall webs, the reinforced concrete underground diaphragm wall with good pressure resistance is used for decomposing the soil pressure and the water pressure in the vertical direction into the thrust force vertical to the I-shaped steel web plate, and the soil pressure and the water pressure on the underground diaphragm walls at two sides in the other direction form stress balance, so that the arch stress structure between the underground diaphragm wall webs and the reinforced concrete diaphragm wall is more stable and reliable under the action of the soil pressure and the water pressure;
D. hoisting a steel reinforcement cage into a groove section dug by a grooving machine;
E. placing a pouring and tamping pipe in the reinforcement cage, and pouring concrete by using the pouring and tamping pipe until the height of the concrete reaches a preset height to form a single wall body;
and after the construction of one underground diaphragm wall is finished, repeating the steps A-E, connecting the single wall bodies together by a plurality of underground diaphragm walls to form an underground diaphragm wall, and excavating in the enclosed space of the diaphragm wall to form the deep parking garage.
2. The WAC construction method for connecting underground continuous wall webs of the storage box garage as claimed in claim 1, is characterized in that: a virtual underground diaphragm wall arc arch type structure is formed among the plurality of underground diaphragm walls by adopting wedge-shaped arch-shaped I-shaped steel webs, the plurality of underground diaphragm walls form a wedge-shaped arch integral stress unit under the condition that no foundation pit inner support or lining wall exists under the action of soil pressure and water pressure, and mechanical balance is formed among all the underground diaphragm walls of the deep foundation pit.
3. The WAC construction method for connecting underground continuous wall webs of the storage box garage as claimed in claim 1, is characterized in that: when the number of the deep wells of the parking garage is more than 1, the deep wells of each parking garage are separated and supported in a mode of additionally arranging a section of underground continuous wall.
CN202010425136.2A 2020-05-19 2020-05-19 WAC construction method for connecting underground continuous wall panels of storage box garage Pending CN111636411A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010425136.2A CN111636411A (en) 2020-05-19 2020-05-19 WAC construction method for connecting underground continuous wall panels of storage box garage

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010425136.2A CN111636411A (en) 2020-05-19 2020-05-19 WAC construction method for connecting underground continuous wall panels of storage box garage

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CN111636411A true CN111636411A (en) 2020-09-08

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59141658A (en) * 1983-02-01 1984-08-14 Nippon Steel Corp Uneven web h-shaped steel
CN1454277A (en) * 2000-03-30 2003-11-05 梅森奈特公司 Composite building components, and method of making same
CN103388375A (en) * 2013-08-20 2013-11-13 河南江河重工集团有限公司 H-shaped steel
CN105155554A (en) * 2015-09-25 2015-12-16 武汉高铁桩工科技有限公司 Deep foundation pit of arched supporting system
CN108532586A (en) * 2018-04-04 2018-09-14 浙江派科停车系统有限公司 A kind of construction method of garage parking diaphram wall
CN208430505U (en) * 2018-11-16 2019-01-25 南京坤拓土木工程科技有限公司 A kind of underground continuous wall connector
KR102075939B1 (en) * 2019-03-06 2020-02-11 강문기 H shaped steel reinforcing structure for CIP retaining wall and permanent wall using the same

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59141658A (en) * 1983-02-01 1984-08-14 Nippon Steel Corp Uneven web h-shaped steel
CN1454277A (en) * 2000-03-30 2003-11-05 梅森奈特公司 Composite building components, and method of making same
CN103388375A (en) * 2013-08-20 2013-11-13 河南江河重工集团有限公司 H-shaped steel
CN105155554A (en) * 2015-09-25 2015-12-16 武汉高铁桩工科技有限公司 Deep foundation pit of arched supporting system
CN108532586A (en) * 2018-04-04 2018-09-14 浙江派科停车系统有限公司 A kind of construction method of garage parking diaphram wall
CN208430505U (en) * 2018-11-16 2019-01-25 南京坤拓土木工程科技有限公司 A kind of underground continuous wall connector
KR102075939B1 (en) * 2019-03-06 2020-02-11 강문기 H shaped steel reinforcing structure for CIP retaining wall and permanent wall using the same

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
张振峰: "钻机平台及轨道梁H型钢焊接变形控制", 《石油机械》 *

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Effective date of registration: 20210903

Address after: 310000 room 825, 8th floor, building 1, No. 223, Yile Road, Xihu District, Hangzhou City, Zhejiang Province

Applicant after: Hangzhou Yunbo receiving Library Technology Co.,Ltd.

Address before: 8 / F, block a, 223 Yile Road, Xihu District, Hangzhou City, Zhejiang Province 310012

Applicant before: Technology Co.,Ltd. Zhejiang cloud Park