CN108589699A - A kind of interpolation H profile steel TRD walls and its construction method - Google Patents
A kind of interpolation H profile steel TRD walls and its construction method Download PDFInfo
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- CN108589699A CN108589699A CN201810361259.7A CN201810361259A CN108589699A CN 108589699 A CN108589699 A CN 108589699A CN 201810361259 A CN201810361259 A CN 201810361259A CN 108589699 A CN108589699 A CN 108589699A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/20—Bulkheads or similar walls made of prefabricated parts and concrete, including reinforced concrete, in situ
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/06—Restraining of underground water
- E02D19/12—Restraining of underground water by damming or interrupting the passage of underground water
- E02D19/18—Restraining of underground water by damming or interrupting the passage of underground water by making use of sealing aprons, e.g. diaphragms made from bituminous or clay material
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- Mining & Mineral Resources (AREA)
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- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Bulkheads Adapted To Foundation Construction (AREA)
Abstract
The present invention relates to a kind of interpolation H profile steel TRD walls and its construction methods, including step：1) groove is excavated；2) provided box is hung；3) stake machine is in place；4) cutting box is connect with host；5) inclinometer is installed；6) TRD engineering methods are at wall；7) slurries fluidity is tested；8) H profile steel is inserted；9) displacement soil processing；10) cutting box is extracted.The beneficial effects of the invention are as follows：The advantages of present invention is by using for reference SMW engineering methods, interpolation shaped steel is applied in the construction of TRD walls, while the advantages of retaining TRD walls, the shortcomings of its flexing resistance is poor is made up by inserting shaped steel, so that TRD walls can only no longer be used separately as water-stop curtain, the water-stagnating effect better than engineering methods such as diaphram walls that TRD walls are once brought at wall can both have been played by inserting shaped steel TRD walls, while the shaped steel being inserted into can play the role of enclosure wall, therefore can promote to widen application range and the popularization of TRD walls.
Description
Technical field
The invention belongs to base pit engineering field more particularly to a kind of interpolation H profile steel TRD walls.
Background technology
TRD engineering methods, that is, soil-cement diaphram wall engineering method, construction equipment are made of host and cutter two large divisions,
Host can be moved along the direction for making wall, in the chain saw type cutter insertion ground of host institute band and traversing along knife rest, while be turned round
Movement pours into cement grout, and be mixed with undisturbed soil in the depth direction by the comprehensive stirring of each layer soil, mixing
Form the soil-cement diaphram wall of equal thickness uniform quality.TRD engineering methods wall has 550mm to 850mm multi-thickness at present.
The engineering method is primarily adapted for use in the foundation engineering of building, the vertical shaft of road tunnel and shield, large-scale landfill, subway and intersects
The engineerings such as foundation stabilization sealing of mouthful active well, the retaining wall on basis, seepproof screen, bay and large reservoir dyke.But in work
In journey example, there is also apparent deficiencies for this engineering method：
1) cement wall formed in TRD engineering methods using in situ soil in be added curing agent to form stable homogeneous
Water sealing structure.Although it possesses good sealing performance, since soil cement self-strength is not high, lacks built-in steel skeleton and enters
Native depth is deeper so that poor at wall anti-bending strength.
2) due to itself poor anti-bending strength, water-stop curtain is both needed to the corresponding earth-retaining of mating combination formed by TRD engineering methods
Structure, such as cast-in-situ bored pile.This can make the construction cost of whole building enclosure higher, and the duration is partially long.
3) since water-stop curtain and corresponding engineering method of going along with sb. to guard him are generally mutually adjacent, the latter can be to water-stop curtain while construction
Additional stress and additional displacement are generated, the possibility of engineering project disaster generation is inevitably increased.
Invention content
The purpose of the present invention is overcoming deficiency in the prior art, a kind of interpolation H profile steel TRD walls and its construction party are provided
Method.
The construction method of this interpolation H profile steel TRD walls, includes the following steps：
1) groove is excavated
After going along with sb. to guard him center line of wall setting-out, along enclosure wall centerline parallel direction excavate working channel, groove width be 1.1~
1.3m, gash depth are 0.9~1.1m；
2) provided box is hung
The pre-buried cave that cutting depth is 2.8~3.2m, length is 1.9~2.1m, width is 0.9~1.1m, by provided box
It hangs in pre-buried cave；
3) stake machine is in place
It commands stake machine in place, check positioning scenarios and corrects in time；
4) cutting box is connect with host
Cutting box is hung paragraph by paragraph into pre-buried cave, host mobility to pre-buried acupuncture point sets connection cutting box, and host returns again to pre-
Determine construction location progress cutting box and voluntarily squeezes into excavation process；
5) inclinometer is installed
Inclinometer is installed, the vertical precision management of wall is carried out；
6) TRD engineering methods are at wall
Host is connect with cutting box, is injected excavation liquid in cutting box bottom and is cut soil layer a distance in advance, then withdraws digging
To original place, starting injection solidify liquid makes it be stirred with soil body Forced Mixing in situ, forms uniform thickness cement-earth underground continuous wall for pick；
7) slurries fluidity is tested
Slurries fluidity is detected with Flow Meter；
8) H profile steel is inserted
After one section of TRD engineering method is at wall, continue the construction of next section of TRD wall, before the preceding paragraph TRD wall initial sets, by table
The H profile steel of anti-friction agent is smeared in face, is sling by machine crawler crane, and TRD walls are inserted into according to the position being pre-designed by H profile steel dead weight
In vivo, or by external force by H profile steel it is pressed into designed elevation；It is stirred in 3 hours at wall and is inserted into H profile steel, H-type is controlled using theodolite
The verticality of steel；H profile steel controls the absolute altitude of H profile steel using spirit level after being inserted into；H profile steel is by dead weight and necessary ancillary equipment
It is inserted into the depth of design requirement, the verticality of H profile steel is not more than 1/300；
H profile steel chooses the H profile steel that depth of section is 100mm~150mm smaller than cement wall width, while H profile steel length is super
TRD is crossed into wall depth 0.5m~1.0m, and is inserted into the good soil layer of mechanical property；For the TRD engineering methods separately as building enclosure
It is 500mm~800mm that wall, which uses close slotting method, H profile steel center spacing,；When excavation of foundation pit depth is more than 15m, reduce in H profile steel
In the heart away from；It can not interpolation H profile steel for the TRD engineering methods wall only as water-stop curtain；When excavation of foundation pit depth is more than 25m or foundation pit
Slotting method of dredging can be used when safe class is high, H profile steel center spacing is 1000mm~1500mm；When TRD engineering method walls are not as permanent
Property structure when H profile steel surface smear lubricant be used for the later stage Shaped steel recovery；
9) displacement soil processing
By the unified stacking of the discarded slurry generated in equal thickness Soil-cement Wall work progress, centralized processing；
10) cutting box is extracted
It works after surface construction, cutting box is segmented using TRD hosts and is extracted.
As preferred：Routine TRD engineering methods construction prior step is carried out before the step 1), is included the following steps：
1) on-site inspection；
2) machinery is marched into the arena；
3) levelling of the land, machinery assembly and backstage are arranged；
4) surveying setting-out.
As preferred：In the step 6), excavates liquid mixing and use sodium bentonite, every cube is stirred soil body incorporation
100kg/m3Bentonite, ratio of mud W/B are 5~20, and work progress is dug by 1000kg water, 50~200kg bentonite mixing slurries
The control of liquid mixing mud fluidity is dug in 190mm~240mm；Solidify liquid mixing uses P.O42.5 grades of Portland cements, often
It cube is stirred the cement of soil body incorporation no less than 25%, the ratio of mud 1.4~1.6, work progress is per 937kg water, 625kg cement
Mixing slurries, solidify liquid mixing mud fluidity are controlled in 180mm~220mm.
The beneficial effects of the invention are as follows：
1, the advantages of present invention is by using for reference SMW engineering methods, interpolation shaped steel is applied in the construction of TRD walls, retains TRD walls
The advantages of while, make up the shortcomings of its flexing resistance is poor by inserting shaped steel so that TRD walls no longer can only be separately as sealing curtain
Curtain uses, and the sealing effect better than engineering methods such as diaphram walls that TRD walls are once brought at wall can both have been played by inserting shaped steel TRD walls
Fruit, while the shaped steel being inserted into can play the role of enclosure wall, therefore can promote to widen application range and the popularization of TRD walls.
2, interpolation steel type TRD wall construction technologies of the present invention so that the scope of application is wider, and TRD engineering methods are more adaptable, can have
Effect improves the anti-bending strength of cement soil wall itself.Simultaneously after structure integral construction, internal shaped steel can also be recycled,
Environment-friendly and green and construction cost reduction.
3, interpolation steel type TRD walls of the present invention safeguard construction of the wall without neighbouring soil-baffling structure separately as building enclosure
It influences, the generation safeguarded wall generation crack and lead to the engineering project disasters such as leakage can be reduced.
4, the use of interpolation steel type TRD walls of the present invention can obtain significant economic benefit, due to once at wall and slotting type
It can make enclosure wall after steel, add one of enclosure wall compared with one of water-stop curtain wall before, difficulty of construction and construction can be reduced
Cost, therefore can reduce investment outlay, shorten the construction period.
Description of the drawings
Fig. 1 is that the present invention uses close slotting type H profile steel TRD wall schematic top plan views；
Fig. 2 is the present invention using thin slotting type H profile steel TRD wall schematic top plan views；
Fig. 3 is the close slotting type H profile steel TRD wall left view schematic diagrams of Fig. 1.
Specific implementation mode
The present invention is described further with reference to embodiment.The explanation of following embodiments is merely used to help understand this
Invention.It should be pointed out that for those skilled in the art, without departing from the principle of the present invention, also
Can be with several improvements and modifications are made to the present invention, these improvement and modification also fall into the protection domain of the claims in the present invention
It is interior.
The construction method of the interpolation H profile steel TRD walls, first construction obtain one section of TRD wall, pre-hardening after TRD is at wall
Before, be inserted into H profile steel within the walls toward TRD, the H profile steel size of wherein interpolation can be different, the distribution of insertion either close insert,
Can also be that interval is inserted, H profile steel surface smear anti-friction agent, in order that facilitating the insertion of early period and the recovery operation in later stage.Its
It is as follows：
Routine TRD engineering methods construction prior step is carried out first：
1) on-site inspection；
2) machinery is marched into the arena；
3) levelling of the land, machinery assembly and backstage are arranged；
4) surveying setting-out.
The construction of any one section of TRD wall is carried out later, which includes the following steps：
1) groove is excavated
According to TRD engineering method weights of equipment, after going along with sb. to guard him center line of wall setting-out, construction site be laid at the reinforcings such as steel plate
Reason measure, it is ensured that construction site meets requirement of the mechanical equipment to foundation bearing capacity, it is ensured that the stability of stake machine.With excavator edge
Excavate working channel, groove width about 1.2m, gash depth about 1.0m in enclosure wall centerline parallel direction.
2) provided box is hung
With the pre-buried cave of excavator cutting depth about 3m, length about 2m, width about 1m, hung using crane and by provided box
Enter in pre-buried cave.
3) stake machine is in place
The case where assuming unified command of that stake machine is in place, seeing upper and lower, left and right various aspects clearly before mobile, discovery has barrier timely
It removes, positioning scenarios are checked after mobile and corrects in time, stake machine is answered steady, straight and even.
4) cutting box is connect with host
Cutting box is hung paragraph by paragraph into pre-buried cave with specified tracklaying crane, is fixed using supporting table；TRD host mobilities
Connection cutting box is set to pre-buried acupuncture point, host returns again to predetermined construction location progress cutting box and voluntarily squeezes into excavation process.
5) inclinometer is installed
After cutting box is voluntarily driven into projected depth, inclinometer is installed.It is surveyed by the multisection type inside cutting box
Oblique instrument can carry out the vertical precision management of wall, usually can ensure that the precision within 1/250.
6) TRD engineering methods are at wall
After inclinometer installs, host is connect with cutting box.Excavation liquid, which is injected, in cutting box bottom cuts soil layer in advance
A distance, then excavation is withdrawn to original place, starting solidify liquid makes it be stirred with soil body Forced Mixing in situ, forms uniform thickness soil cement
Diaphram wall.It excavates liquid mixing and preferably uses sodium bentonite, every cube is stirred soil body incorporation 100kg/m3Bentonite, water ash
It is 5~20 than W/B, work progress excavates liquid mixing mud fluidity by 1000kg water, 50~200kg bentonite mixing slurries
It preferably controls in 190mm~240mm.Solidify liquid mixing preferably uses P.O42.5 grades of Portland cements, and every cube is stirred the soil body
The cement of incorporation no less than 25%, the ratio of mud 1.5, work progress is per 937kg water, 625kg cement mixing slurries, solidify liquid mixing
Mud fluidity is preferably controlled in 180mm~220mm.
7) slurries fluidity is tested
Slurries fluidity is detected with Flow Meter.
8) H profile steel is inserted
After one section of TRD engineering method is at wall, continue the construction of next section of TRD wall, before the preceding paragraph TRD wall initial sets, by table
The H profile steel of anti-friction agent is smeared in face, is sling by machine crawler crane, and TRD walls are inserted into according to the position being pre-designed by shaped steel dead weight
In vivo, shaped steel can be pressed into designed elevation by external force when necessary.3 hours planted agents are stirred at wall and are inserted into shaped steel, utilize theodolite
Control the verticality of shaped steel；Shaped steel controls the absolute altitude of shaped steel using spirit level after being inserted into, it is ensured that the insertion depth of shaped steel；Shaped steel is suitable
The depth of design requirement is inserted by dead weight and necessary ancillary equipment, the verticality of shaped steel is not more than 1/300.
H profile steel preferably chooses the shaped steel that depth of section is 100mm smaller than cement wall width, ensures that shaped steel is synchronous with cement soil wall
Deformation, while shaped steel length is preferably more than TRD into wall depth 0.5m, and the soil layer of insertion mechanics better performances.For separately as
The TRD engineering methods wall of building enclosure preferably uses close slotting method, and shaped steel center spacing is preferably 600mm；When excavation of foundation pit depth is more than 15m
When, it can suitably reduce shaped steel center spacing to improve the anti-bending strength of building enclosure；For only as the TRD engineering methods of water-stop curtain
Wall can not interpolation shaped steel, when excavation of foundation pit depth is more than 25m or deep pit monitor is higher ranked appropriate to the occasion using dredging slotting method, shaped steel center
Spacing is preferably 1200mm.It can be in shaped steel surface smear lubricant for the later stage when TRD engineering methods wall is not as permanent structure
Shaped steel recovery, to reduce engineering cost.
9) displacement soil processing
By the unified stacking of the discarded slurry generated in equal thickness Soil-cement Wall work progress, centralized processing.
10) cutting box is extracted
It works after surface construction, cutting box is segmented using TRD hosts and is extracted.
After the completion of last each section of interpolation H steel type TRD wall is all constructed, carries out machinery and withdraw from the arena.
Claims (3)
1. a kind of construction method of interpolation H profile steel TRD walls, which is characterized in that include the following steps：
1) groove is excavated
After going along with sb. to guard him center line of wall setting-out, working channel is excavated along enclosure wall centerline parallel direction, groove width is 1.1~1.3m, ditch
Groove depth is 0.9~1.1m；
2) provided box is hung
The pre-buried cave that cutting depth is 2.8~3.2m, length is 1.9~2.1m, width is 0.9~1.1m, provided box is hung
Enter in pre-buried cave；
3) stake machine is in place
It commands stake machine in place, check positioning scenarios and corrects in time；
4) cutting box is connect with host
Cutting box is hung paragraph by paragraph into pre-buried cave, host mobility to pre-buried acupuncture point sets connection cutting box, and host returns again to predetermined apply
Station sets progress cutting box and voluntarily squeezes into excavation process；
5) inclinometer is installed
Inclinometer is installed, the vertical precision management of wall is carried out；
6) TRD engineering methods are at wall
Host is connect with cutting box, is injected excavation liquid in cutting box bottom and is cut soil layer a distance in advance, then withdraws excavation extremely
Original place, starting injection solidify liquid makes it be stirred with soil body Forced Mixing in situ, forms uniform thickness cement-earth underground continuous wall；
7) slurries fluidity is tested
Slurries fluidity is detected with Flow Meter；
8) H profile steel is inserted
After one section of TRD engineering method is at wall, the construction for continuing next section of TRD wall applies surface before the preceding paragraph TRD wall initial sets
The H profile steel for smearing anti-friction agent is sling by machine crawler crane, and TRD walls are inserted into according to the position being pre-designed by H profile steel dead weight
It is interior, or H profile steel is pressed into designed elevation by external force；It is stirred in 3 hours at wall and is inserted into H profile steel, H profile steel is controlled using theodolite
Verticality；H profile steel controls the absolute altitude of H profile steel using spirit level after being inserted into；H profile steel is inserted by dead weight and necessary ancillary equipment
Enter the depth to design requirement, the verticality of H profile steel is not more than 1/300；
H profile steel chooses the H profile steel that depth of section is 100mm~150mm smaller than cement wall width, while H profile steel length is more than TRD
At wall depth 0.5m~1.0m, and it is inserted into the good soil layer of mechanical property；For the TRD engineering method walls use separately as building enclosure
Close slotting method, H profile steel center spacing are 500mm~800mm；When excavation of foundation pit depth is more than 15m, reduce H profile steel center spacing；
It can not interpolation H profile steel for the TRD engineering methods wall only as water-stop curtain；When excavation of foundation pit depth is more than 25m or deep pit monitor etc.
Slotting method of dredging can be used in grade when high, H profile steel center spacing is 1000mm~1500mm；When TRD engineering method walls are not as permanent structure
When H profile steel surface smear lubricant be used for the later stage Shaped steel recovery；
9) displacement soil processing
By the unified stacking of the discarded slurry generated in equal thickness Soil-cement Wall work progress, centralized processing；
10) cutting box is extracted
It works after surface construction, cutting box is segmented using TRD hosts and is extracted.
2. the construction method of interpolation H profile steel TRD walls according to claim 1, which is characterized in that the advance of the step 1)
Row routine TRD engineering methods construction prior step, includes the following steps：
1) on-site inspection；
2) machinery is marched into the arena；
3) levelling of the land, machinery assembly and backstage are arranged；
4) surveying setting-out.
3. the construction method of interpolation H profile steel TRD walls according to claim 1, which is characterized in that in the step 6), dig
It digs liquid mixing and uses sodium bentonite, every cube is stirred soil body incorporation 100kg/m3Bentonite, ratio of mud W/B are 5~20, are applied
Work process by 1000kg water, 50~200kg bentonite mixing slurries, excavate liquid mixing mud fluidity control 190mm~
240mm；Solidify liquid mixing uses P.O42.5 grades of Portland cements, and every cube is stirred soil body incorporation no less than 25%
Cement, the ratio of mud 1.4~1.6, work progress is per 937kg water, 625kg cement mixing slurries, solidify liquid mixing mud fluidity
Control is in 180mm~220mm.
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109137886A (en) * | 2018-10-18 | 2019-01-04 | 中铁十二局集团有限公司 | Wall type construction method for diaphragm walls is mixed in city underground |
| CN109403337A (en) * | 2018-10-12 | 2019-03-01 | 江苏省送变电有限公司 | A kind of basalt fibre reinforcement TRD engineering method diaphram wall and its construction method |
| CN109403338A (en) * | 2018-10-12 | 2019-03-01 | 江苏省送变电有限公司 | A kind of assembly lattice configuration steel TRD engineering method diaphram wall and its construction method |
| CN110306531A (en) * | 2019-07-06 | 2019-10-08 | 中铁二十五局集团第五工程有限公司 | High water level erratic boulder stratum construction of diaphragm wall technique |
| CN111042249A (en) * | 2019-12-27 | 2020-04-21 | 上海建工四建集团有限公司 | Construction method of ultra-deep equal-thickness cement-soil mixing wall under complex geological condition |
| CN111236262A (en) * | 2020-03-16 | 2020-06-05 | 中铁建设集团有限公司 | CSM + TRD underground continuous wall comprehensive construction method |
| CN112707692A (en) * | 2021-01-06 | 2021-04-27 | 上海智平基础工程有限公司 | Cutting fluid for TRD construction, preparation method and construction method |
| CN113756286A (en) * | 2021-08-09 | 2021-12-07 | 上海市基础工程集团有限公司 | Construction method for implementing underground water soil continuous steel wall by TRD method |
| CN114215070A (en) * | 2021-12-23 | 2022-03-22 | 浙江省建筑设计研究院 | Super-deep TRD (blast furnace direct reduction) wall forming construction method for gravel water-rich stratum based on assembled L-shaped guide wall |
| CN114837168A (en) * | 2022-04-20 | 2022-08-02 | 浙江交工集团股份有限公司 | Comprehensive pipe gallery enclosure wall and construction method thereof |
| CN116163318A (en) * | 2023-04-25 | 2023-05-26 | 广州地铁设计研究院股份有限公司 | Construction method and structure for foundation pit support of inserted section steel microorganism sand wall |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109403337A (en) * | 2018-10-12 | 2019-03-01 | 江苏省送变电有限公司 | A kind of basalt fibre reinforcement TRD engineering method diaphram wall and its construction method |
| CN109403338A (en) * | 2018-10-12 | 2019-03-01 | 江苏省送变电有限公司 | A kind of assembly lattice configuration steel TRD engineering method diaphram wall and its construction method |
| CN109137886A (en) * | 2018-10-18 | 2019-01-04 | 中铁十二局集团有限公司 | Wall type construction method for diaphragm walls is mixed in city underground |
| CN110306531A (en) * | 2019-07-06 | 2019-10-08 | 中铁二十五局集团第五工程有限公司 | High water level erratic boulder stratum construction of diaphragm wall technique |
| CN111042249A (en) * | 2019-12-27 | 2020-04-21 | 上海建工四建集团有限公司 | Construction method of ultra-deep equal-thickness cement-soil mixing wall under complex geological condition |
| CN111236262A (en) * | 2020-03-16 | 2020-06-05 | 中铁建设集团有限公司 | CSM + TRD underground continuous wall comprehensive construction method |
| CN112707692A (en) * | 2021-01-06 | 2021-04-27 | 上海智平基础工程有限公司 | Cutting fluid for TRD construction, preparation method and construction method |
| CN113756286A (en) * | 2021-08-09 | 2021-12-07 | 上海市基础工程集团有限公司 | Construction method for implementing underground water soil continuous steel wall by TRD method |
| CN114215070A (en) * | 2021-12-23 | 2022-03-22 | 浙江省建筑设计研究院 | Super-deep TRD (blast furnace direct reduction) wall forming construction method for gravel water-rich stratum based on assembled L-shaped guide wall |
| CN114837168A (en) * | 2022-04-20 | 2022-08-02 | 浙江交工集团股份有限公司 | Comprehensive pipe gallery enclosure wall and construction method thereof |
| CN116163318A (en) * | 2023-04-25 | 2023-05-26 | 广州地铁设计研究院股份有限公司 | Construction method and structure for foundation pit support of inserted section steel microorganism sand wall |
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Application publication date: 20180928 |