CN108277823A - A kind of construction method of subway platform layer totality - Google Patents
A kind of construction method of subway platform layer totality Download PDFInfo
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- CN108277823A CN108277823A CN201810107800.1A CN201810107800A CN108277823A CN 108277823 A CN108277823 A CN 108277823A CN 201810107800 A CN201810107800 A CN 201810107800A CN 108277823 A CN108277823 A CN 108277823A
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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
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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
- E02D29/16—Arrangement or construction of joints in foundation structures
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/02—Protective 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 ground humidity or ground water
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- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
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- General Engineering & Computer Science (AREA)
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- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
Abstract
The invention discloses a kind of construction methods of subway platform layer totality, including middle harden structure, floor structure, longitudinal built-in slip casting pipe, construction joint and extrusion type adhesive tape, the construction method that the overall construction of the subway platform layer passes through abutment wall after first bottom plate, station underplate concrete is divided into 7 sections and pours, wherein 4#~3# points 2 sections, 3#~2# points 2 sections, 2#~1# points 3 sections, the whole earthwork is by the method for stage excavation, the equal indwelling of longitudinal every layer of earthwork 1:1 slope；Using the construction method of abutment wall after first bottom plate, station underplate concrete is divided into 7 sections and pours, the method that the whole earthwork is all made of stage excavation, the construction of earth excavation, construction of bottom plates and station layer abutment wall is completed backward, construction efficiency is high, construction quality is high, and the construction period shortens, and ensures the efficient operation of subway platform layer overall safety.
Description
Technical field
The present invention relates to subway work technical field, the construction method of specifically a kind of subway platform layer totality.
Background technology
With the fast development of urban track traffic, Metro Network is gradually improved, occur more and more three lines or even
The super larges scale of construction junction such as four line stations.Big scale of construction subway station is needed to construct to subway station hall layer in construction
It ends, such as No. 15 lines of Beijing Metro are located at Beijing northeast region, is mainly distributed on Haidian, southern exposure, three, Shunyi administrative area.
45.8 kilometers of total track length, wherein about 30.2 kilometers of underground cable, about 15.6 kilometers of overhead route.Completely 22 seat coach stations are set altogether, wherein
17, underground station, elevated station 5, average about 2 kilometers of station spacing.This engineering station is that No. 15 line first stage of the project are finally stood, and
No. 13 lines transfer built up, section are way station of institute~Tsing-Hua University eastern station subsurface excavation method two-wire section (containing double crossover) and Tsing-Hua University eastern station
Subsurface excavation method big cross section section after standing.Station periphery is largely to be completed region, mostly business, institute and inhabitation.In subway station
During the construction of platform layer ends, a set of perfect construction method is needed to ensure the safe efficient progress of construction.
Invention content
The purpose of the present invention is to provide a kind of construction methods of subway platform layer totality, to solve in above-mentioned background technology
The problem of proposition.
To achieve the above object, the present invention provides the following technical solutions：
A kind of construction method of subway platform layer totality, including middle harden structure, floor structure, longitudinal built-in slip casting pipe, apply
Work is stitched and extrusion type adhesive tape, and the overall construction of the subway platform layer passes through the construction method of abutment wall after first bottom plate, station bottom
Board concrete is divided into 7 sections and pours, wherein 4#~3# points 2 sections, 3#~2# points 2 sections, 2#~1# points 3 sections, the whole earthwork is by dividing
The method that layer excavates, the equal indwelling of longitudinal every layer of earthwork 1:1 slope, specifically includes following steps：
Step 1：Earth excavation
Minus two layers of earth excavation first therefrom across beginning, in be carried out in three steps across along height, 2m models below floor in the first step
Interior hand excavation is enclosed, while with cutting middle floor mould；Second step excavates top surface of the beam on earth and is equipped with and manually tears open by mechanical excavation
Except lower pilot tunnel preliminary bracing, floor structure is applied；Third step excavates both sides, and applies bottom plate and side wall, and end bay earth excavation is wanted
Both sides are symmetrically excavated, with excavation with the shotcrete with wire mesh supporting performed between end bay stake；
Step 2：Construction of bottom plates
After the completion of substrate bed course, it is first laid with waterproof layer, binds bottom reinforcement bars, while reserved both sides platform slab constructional column steel
Muscle, in connect with two base for post reserved steel bars across baseplate reinforcing bar, abutment wall of constructing simultaneously when construction of bottom plates is to the above 10cm of chamfering；Abutment wall
By shape steel bracket, template is longitudinal once to construct length 30m by template modulus by punching block of shaping for support；
Step 3：The construction of station layer abutment wall
After end bay underplate concrete reaches 75% intensity, side wall lining is closely followed, mono- section of side wall lining 15m；Sidewall template
Method constructing and overhanging model is inserted by inverse work.
As a further solution of the present invention：Floor structure bottom shown in step 1 is provided, in sequence from bottom to top, with 300mm
Bar-mat reinforcement spray mixes bed course, waterproof layer, 70mm fish tail and waterproof layers, C40 moulds and builds armored concrete, P10；Shown in mould build reinforced concrete
Native front, which is less than at 5000mm, is equipped with 1:1~1:1.5 natural discharging slopes, the top 3500mm on the upside of natural discharging slope are hardened in being equipped with
Structure.
As a further solution of the present invention：In the step 1 before construction of cushion layer concrete, substrate is handled first, is padded
Layer is by C20 Commercial Concretes, by the direct discharging of concrete transfer pump boom to substrate, manually shakeouts simultaneously jolt ramming.
As a further solution of the present invention：In the bottom board concrete construction of the step 2, it is always ensured that drainage system and pumping
The normal use of wetting system；The strength grade of bottom board concrete is C40, and when construction of bottom plates does not stay horizontal construction joint, longitudinal divisions to hang down
Straight construction joint is arranged smaller and convenient for the position of construction by shearing in structure, and pays attention to ensureing the integrality of station inner facility.
As a further solution of the present invention：Sidewall template inserts method constructing and overhanging model by inverse work in step 3, and particular technique is wanted
Ask as follows：
1. the concrete at construction joint position, reinforcing bar are handled
Station layer abutment wall respectively has one of construction joint above and below, and rubbish, cement film, the table at construction joint position are removed before constructing
Sandstone and weak concrete layer are loosened on face, while being subject to dabbing, be rinsed with water clean and is sufficiently humidified so as to, while removing pre-buried steel
Greasy dirt, cement mortar on muscle and floating rust sundries；
2. construction joint water-proofing treatment
Construction joint is cleaned out and after dabbing, and waterproof construction is carried out；
After the lower part construction joint basal plane dabbing for performing the side wall concrete poured when bottom plate, twice are smeared between two main reinforcements
Filleting glue installs one of Grouting Pipe between twice filleting glue；
The inverse of the abutment wall top that centering plate has performed when pouring does construction joint, and when middle board concrete pours, there are mistakes
Platform respectively smears one of filleting glue, and install one under the baseplane between two faulting of slab ends after the face dabbing of faulting of slab ends in faulting of slab ends two sides
Road Grouting Pipe.
As a further solution of the present invention：The Grouting Pipe is fixed on construction joint surface texture center line by dedicated fastener
On, attachment fastener is encrypted when top construction joint installs Grouting Pipe along construction joint elongated setting.
As a further solution of the present invention：The Grouting Pipe is longitudinal built-in slip casting pipe, and filleting glue is extrusion type adhesive tape.
Compared with prior art, the beneficial effects of the invention are as follows：A kind of construction method of the subway platform layer totality,
Using the construction method of abutment wall after first bottom plate, station underplate concrete is divided into 7 sections and pours, and the whole earthwork is all made of stage excavation
Method completes the construction of earth excavation, construction of bottom plates and station layer abutment wall backward, and construction efficiency is high, and construction quality is high, work of constructing
Phase shortens, and ensures the efficient operation of subway platform layer overall safety.
Description of the drawings
Fig. 1 is that mechanical excavation longitudinally uses the structural schematic diagram for dividing bench excavation in the present invention.
Fig. 2 is 9 waterproof schematic diagram top construction joint of middle and lower part construction joint, 9 waterproof schematic diagram of the present invention.
In figure：In 1- harden structure, 2- natural discharging slopes, 3- floor structures, 4- moulds build armored concrete, 5- fish tail and waterproof layers,
6- waterproof layers, the spray of 7- bar-mat reinforcements mix bed course, the longitudinal directions 8- built-in slip casting pipe, 9- construction joints, 10- extrusion type adhesive tape.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Please refer to Fig.1~2, in the embodiment of the present invention, a kind of construction method of subway platform layer totality, including middle harden structure
1, natural discharging slope 2, floor structure 3, mould are built armored concrete 4, fish tail and waterproof layer 5, waterproof layer 6, the mixed bed course 7 of bar-mat reinforcement spray, are indulged
To built-in slip casting pipe 8, construction joint 9 and extrusion type adhesive tape 10, abutment wall applies after the overall bottom plate using elder generation of the subway platform layer
Work method, station underplate concrete are divided into 7 sections and pour, wherein 4#~3# points 2 sections, 3#~2# points 2 sections, 2#~1# points 3 sections, whole
The method that the body earthwork is all made of stage excavation, the equal indwelling of longitudinal every layer of earthwork 1:1 slope.
The first step：Earth excavation
Minus two layers of earth excavation first therefrom across beginning, in be carried out in three steps across along height, 2m models below floor in the first step
Interior hand excavation is enclosed, while with cutting middle floor mould；Second step excavates top surface of the beam on earth and is equipped with and is manually torn open using mechanical excavation
Except lower pilot tunnel preliminary bracing, floor structure 3 is applied；Third step excavates both sides, and applies bottom plate and side wall.End bay earth excavation is wanted
Both sides are symmetrically excavated, with excavation with the shotcrete with wire mesh supporting performed between end bay stake.Shown in Fig. 1, arrow is signified in figure
For soil excavation direction, 3 bottom of shown floor structure be provided, in sequence from bottom to top, with the spray of 300mm bar-mat reinforcements mix bed course 7, waterproof layer 6,
70mm fish tail and waterproof layers 5, C40 moulds build armored concrete 4, P10；Shown in mould build the front of armored concrete 4 and be less than at 5000mm
Equipped with 1:1~1:The top 3500mm of 1.5 natural discharging slopes 2,2 upside of natural discharging slope is equipped with middle harden structure 1.
Before construction of cushion layer concrete, substrate is handled first, bed course uses C20 Commercial Concretes, straight by concrete transfer pump boom
Material unload to substrate, manually shakeouts simultaneously jolt ramming.Since this project subject structure uses full packet waterproof, construction of cushion layer concrete strictly to control
Top surface absolute altitude processed.
Second step：Construction of bottom plates
After the completion of substrate bed course, it is first laid with waterproof layer, binds bottom reinforcement bars, while reserved both sides platform slab constructional column steel
Muscle, in connect with two base for post reserved steel bars across baseplate reinforcing bar.Abutment wall is constructed to the above 10cm of chamfering simultaneously when construction of bottom plates, is convenient for
Reinforcing bar and waterproof it is reserved, be conducive to the installation of abutment wall holder.Abutment wall support uses shape steel bracket, template to use sizing punching block,
It is longitudinal once to construct length 30m or so by template modulus, it is adjusted according to actual conditions at section variation.
In bottom board concrete construction, it is always ensured that the normal use of drainage system and pumping equipment, prevents pit water accumulation, it is ensured that concrete
Pouring quality.The strength grade of bottom board concrete is C40.Horizontal construction joint 9, the vertical construction joints of longitudinal divisions are not stayed when construction of bottom plates
9 be arranged structure by shear it is smaller and convenient for construction position, and pay attention to ensure station inner facility (such as pond, goes out elevator
Entrance etc.) integrality as possible.
Third walks：The construction of station layer abutment wall
After end bay underplate concrete reaches 75% intensity, side wall lining is closely followed, one section of side wall lining 15m or so.Abutment wall
Template inserts method constructing and overhanging model using inverse work.Particular technique requires as follows：
1. the concrete at 9 position of construction joint, reinforcing bar are handled
Station layer abutment wall respectively has one of construction joint 9 above and below, and rubbish, the cement that 9 position of construction joint should be removed before construction are thin
Sandstone and weak concrete layer are loosened on film, surface, while being subject to dabbing, are rinsed with water clean and are sufficiently humidified so as to.It removes simultaneously
The sundries such as greasy dirt, cement mortar and floating rust on embedded bar.
2. 9 water-proofing treatment of construction joint
Construction joint 9 should be cleaned out and after dabbing, then carry out waterproof construction.
After the 9 basal plane dabbing of lower part construction joint of the side wall concrete poured when for performing bottom plate, applied between two main reinforcements
Twice filleting glue is smeared, one of Grouting Pipe is installed between twice filleting glue.
The inverse of the abutment wall top that centering plate has performed when pouring does construction joint 9, and when middle board concrete pours, there are mistakes
Platform respectively smears one of filleting glue, and install one under the baseplane between two faulting of slab ends after the face dabbing of faulting of slab ends in faulting of slab ends two sides
Road Grouting Pipe.
Filleting glue smearing requires uniform, coherent and meets waterproof requirement, there is not allowed that aliquation or obscission, in order to avoid influence
Water-stagnating effect.Grouting Pipe is fixed on using dedicated fastener on 9 surface texture center line of construction joint, along 9 elongated setting of construction joint.Top
Reply attachment fastener is encrypted when construction joint 9 installs Grouting Pipe, and preventing in concreting process bayonet to fall off makes slip casting
Pipe displacement influences slip casting effect.
Shown Grouting Pipe is longitudinal built-in slip casting pipe 8, and filleting glue is extrusion type adhesive tape 10.
The invention is not limited in above-described embodiments, on the basis of technical solution disclosed by the invention, the skill of this field
For art personnel according to disclosed technology contents, one can be made to some of which technical characteristic by not needing performing creative labour
A little simple modification, equivalent change and modifications, belong in the range of technical solution of the present invention.
In the description of this specification, it should be noted that unless otherwise clearly defined and limited, term " setting ",
" connected " and " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally connect
It connects；It can be directly connected, can also can be indirectly connected through an intermediary the connection inside two elements.For this
For the those of ordinary skill in field, the concrete meaning of above-mentioned term in the present invention can be understood with concrete condition.
Claims (7)
1. a kind of construction method of subway platform layer totality, including middle harden structure, floor structure, longitudinal built-in slip casting pipe, construction
Seam and extrusion type adhesive tape, which is characterized in that the construction party that the overall construction of the subway platform layer passes through abutment wall after first bottom plate
Method, station underplate concrete are divided into 7 sections and pour, wherein and 4#~3# points 2 sections, 3#~2# points 2 sections, 2#~1# points 3 sections, whole soil
Fang Jun is by the method for stage excavation, the equal indwelling of longitudinal every layer of earthwork 1:1 slope, specifically includes following steps：
Step 1：Earth excavation
Minus two layers of earth excavation first therefrom across beginning, in be carried out in three steps across along height, in the first step below floor within the scope of 2m
Hand excavation, while with cutting middle floor mould；Second step excavates top surface of the beam on earth and is equipped under manual demolition by mechanical excavation
Pilot tunnel preliminary bracing, applies floor structure；Third step excavates both sides, and applies bottom plate and side wall, and end bay earth excavation wants both sides
It is symmetrical to excavate, with excavation with the shotcrete with wire mesh supporting performed between end bay stake；
Step 2：Construction of bottom plates
After the completion of substrate bed course, it is first laid with waterproof layer, binds bottom reinforcement bars, while reserved both sides platform slab constructional column reinforcing bar, in
It is connect with two base for post reserved steel bars across baseplate reinforcing bar, abutment wall of constructing simultaneously when construction of bottom plates is to the above 10cm of chamfering；Abutment wall supports
By shape steel bracket, template is longitudinal once to construct length 30m by template modulus by punching block of shaping；
Step 3：The construction of station layer abutment wall
After end bay underplate concrete reaches 75% intensity, side wall lining is closely followed, mono- section of side wall lining 15m；Sidewall template passes through
It is inverse to make to insert method constructing and overhanging model.
2. a kind of construction method of subway platform layer totality according to claim 1, which is characterized in that shown in step 1
Floor structure bottom is provided, in sequence from bottom to top, with the mixed bed course of 300mm bar-mat reinforcements spray, waterproof layer, 70mm fish tail and waterproof layers, C40 moulds and builds
Armored concrete, P10；Shown in mould build and be less than the places 5000mm in front of armored concrete equipped with 1:1~1:1.5 natural discharging slopes, from
Top 3500mm on the upside of right slope is equipped with middle harden structure.
3. a kind of construction method of subway platform layer totality according to claim 1, which is characterized in that bed course in step 1
Before concrete construction, substrate is handled first, bed course is by C20 Commercial Concretes, by the direct discharging of concrete transfer pump boom to substrate,
It is artificial to shakeout simultaneously jolt ramming.
4. a kind of construction method of subway platform layer totality according to claim 1, which is characterized in that the bottom plate of step 2
In concrete construction, it is always ensured that the normal use of drainage system and pumping equipment；The strength grade of bottom board concrete is C40, construction of bottom plates
When do not stay horizontal construction joint, the vertical construction joints of longitudinal divisions be arranged it is smaller and convenient for the position of construction by shearing in structure, and
Pay attention to ensureing the integrality of station inner facility.
5. a kind of construction method of subway platform layer totality according to claim 1, which is characterized in that abutment wall in step 3
Template inserts method constructing and overhanging model by inverse work, and particular technique requires as follows：
1. the concrete at construction joint position, reinforcing bar are handled
Station layer abutment wall respectively has one of construction joint above and below, on the rubbish, cement film, surface that construction joint position is removed before constructing
Sandstone and weak concrete layer are loosened, while being subject to dabbing, be rinsed with water clean and is sufficiently humidified so as to, while being removed on embedded bar
Greasy dirt, cement mortar and floating rust sundries；
2. construction joint water-proofing treatment
Construction joint is cleaned out and after dabbing, and waterproof construction is carried out；
After the lower part construction joint basal plane dabbing for performing the side wall concrete poured when bottom plate, twice filleting is smeared between two main reinforcements
Glue installs one of Grouting Pipe between twice filleting glue；
The inverse of the abutment wall top that centering plate has performed when pouring does construction joint, and when middle board concrete pours, there are faulting of slab ends, right
After the face dabbing of faulting of slab ends, one of filleting glue is respectively smeared in faulting of slab ends two sides, and installation is noted together under the baseplane between two faulting of slab ends
Slurry pipe.
6. a kind of construction method of subway platform layer totality according to claim 5, which is characterized in that the Grouting Pipe is logical
Dedicated fastener is crossed to be fixed on construction joint surface texture center line, along the elongated setting of construction joint, when top construction joint installs Grouting Pipe,
Attachment fastener is encrypted.
7. a kind of construction method of subway platform layer totality according to claim 6, which is characterized in that the Grouting Pipe is
Longitudinal built-in slip casting pipe, filleting glue are extrusion type adhesive tape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201810107800.1A CN108277823A (en) | 2018-02-02 | 2018-02-02 | A kind of construction method of subway platform layer totality |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810107800.1A CN108277823A (en) | 2018-02-02 | 2018-02-02 | A kind of construction method of subway platform layer totality |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108914966A (en) * | 2018-08-15 | 2018-11-30 | 北京市政建设集团有限责任公司 | A kind of open-cut station main structure and its construction method |
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