CN110185053A - A kind of construction method of assembled circular open caisson - Google Patents
A kind of construction method of assembled circular open caisson Download PDFInfo
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- CN110185053A CN110185053A CN201910323442.2A CN201910323442A CN110185053A CN 110185053 A CN110185053 A CN 110185053A CN 201910323442 A CN201910323442 A CN 201910323442A CN 110185053 A CN110185053 A CN 110185053A
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- 238000010276 construction Methods 0.000 title claims abstract description 58
- 238000000034 method Methods 0.000 claims abstract description 12
- 238000009434 installation Methods 0.000 claims abstract description 6
- 230000002787 reinforcement Effects 0.000 claims abstract description 5
- 230000001105 regulatory effect Effects 0.000 claims description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 230000001154 acute effect Effects 0.000 claims description 3
- 239000004576 sand Substances 0.000 description 6
- 239000002689 soil Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
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- 239000004743 Polypropylene Substances 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
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- 238000003556 assay Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
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- 238000012544 monitoring process Methods 0.000 description 1
- 239000010813 municipal solid waste Substances 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 238000009417 prefabrication Methods 0.000 description 1
- 238000012552 review Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 238000007569 slipcasting Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D23/00—Caissons; Construction or placing of caissons
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D23/00—Caissons; Construction or placing of caissons
- E02D23/08—Lowering or sinking caissons
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/10—Deep foundations
- E02D27/18—Foundations formed by making use of caissons
Abstract
The invention discloses a kind of construction method of assembled circular open caisson, the prefabricated place for including the following steps: (1), completing open caisson flattens reinforcement operation place；(2), delivery tube blade unit reaches open caisson scene, and in-site installation section of jurisdiction unit forms endless tube piece, and multiple endless tube pieces are longitudinal assembled, at least complete a part of open caisson；(3), implement open caisson first time sinking construction；(4), when the endless tube piece drops to certain distance from the ground, implement the subsequent sinking construction of open caisson, i.e., multiple endless tube on pieces increase new endless tube piece, well sinking depth are continuously increased, until open caisson reaches predetermined depth；(5), implement open caisson construction of bottom plates.The present invention uses assembly method to achieve the purpose that facilitate splicing, control open caisson speed, shorten the construction period, reduce difficulty of construction, reduce project cost.
Description
Technical field
The present invention relates to Construction Technique of Underground Works fields, and in particular to a kind of construction method of assembled circular open caisson.
Background technique
Well foundation, which has bearing capacity strong, good integrity, has both construction encloses, and the characteristics such as weir are built in large bridge etc.
It is widely applied in object.Open caisson construction is first to be fabricated to the works (open caisson) of a pit shaft shape in earth's surface, then enclosing in the borehole wall
By constantly cutting the earth out of well under shield, so that open caisson is gradually sunk under Gravitative Loads, after reaching predetermined design absolute altitude, then sealed
Internal structure is constructed at bottom.It is widely used in the basis of municipal administration, bridge etc. or the active well on top.
Open caisson construction is widely applied in municipal works as a kind of method for building underground structure or deep foundation, existing
The method for having well sinking is as follows:
1) scene at least makes a part of open caisson, and after open caisson reaches predetermined structure intensity, the first time for implementing open caisson sinks
Construction；
2) implement dewatering measure around open caisson, and implement the subsequent sinking construction of open caisson, until open caisson reaches predetermined depth；
3) implement open caisson construction of bottom plates.
The open caisson that the poured in place concrete of step 1) is formed sinks for the first time again after open caisson reaches predetermined structure intensity
Construction, wherein open caisson reaches predetermined structure intensity and at least needs 20 days, then needs to pour open caisson again if necessary to secondary sinking,
It continues waiting for 20 days, the open caisson that the subsequent sinking of this construction method is sunk with first time docks difficulty, is easy inclination, open caisson is easily opened
It splits, the construction time is long, and cumbersome, project cost is high.
Summary of the invention
The purpose of the invention is to overcome shortcoming and defect of the existing technology, and it is heavy to provide a kind of assembled circle
The construction method of well.The present invention using assembly method reach ease of assembly, it is not easy to crack, shorten the construction period, reduce difficulty of construction, subtract
The purpose of few project cost.
To achieve the above object, technical solution of the present invention: a kind of construction method of assembled circular open caisson, including it is as follows
Step:
(1), the prefabricated place of open caisson is completed, reinforcement operation place is flattened；
(2), delivery tube blade unit reaches open caisson scene, and in-site installation section of jurisdiction unit forms endless tube piece, and multiple endless tube pieces are longitudinally spelled
Dress at least completes a part of open caisson；
(3), implement open caisson first time sinking construction；
(4), when the endless tube piece drops to certain distance from the ground, implement the subsequent sinking construction of open caisson, i.e., it is multiple described
Endless tube on piece increases new endless tube piece, is continuously increased well sinking depth, until open caisson reaches predetermined depth；
(5), implement open caisson construction of bottom plates.
By using above-mentioned technical proposal, the present invention is to ensure that open caisson uniformly sinks, uniformly except soil is primary item in open caisson
Part, while key measure being taken to assist open caisson safety, smoothly sink in place, including intelligentized surveillance and control measure, sink the later period
Help heavy ancillary measure and the stagnant heavy and founding control measure of open caisson.The prior art was being sunk using live one-piece casting, open caisson
It is easy inclination in journey, generates slight crack.Using the construction method of assembled open caisson: each section of jurisdiction unit size is consistent, forms one
Section of jurisdiction is changed, the section of jurisdiction unit that can take at random at the scene carries out the splicing section of jurisdiction of open caisson, and unit factory process makes precision
Height, not easy to crack, the construction time is short, can control the longitudinal spliced size of open caisson, may be implemented continuously to construct, without waiting for the phase,
Open caisson load-carrying efficiency is improved, and structure is simple, and flat slab capital construction is cut the earth more convenient and at low cost in well.It can control
Open caisson decrease speed needs speed to hurry up and then only needs in top layer's adding tube blade unit, needs a little slower, reduces section of jurisdiction unit
Or slows down and place speed, therefore the probability of open caisson run-off the straight can be made to be greatly reduced.
Technical solution of the present invention: the equal circumferential direction in endless tube piece two sides described in step (2) is embedded with several card slots, adjacent two ring
Longitudinally connected by several connectors between section of jurisdiction, the connector both ends buckle into the corresponding card slot of adjacent two endless tubes piece respectively
Interior, the adjacent endless tube piece is connected by screw bolt, and described section of jurisdiction unit one end is equipped with fixation hole, and the other end is equipped with
Putting hole, the fixation hole include adjustment hole and spliced eye, and the spliced eye is connected with adjustment hole, and with adjacent pipe
Blade unit putting hole is connected, and fastener is slidably connected in the putting hole, and the other end of the fastener is plugged in
In the spliced eye, the regulating part for abutting the fastener is provided in the adjustment hole.
By using above-mentioned technical proposal, the connector production of the pre-buried buckle-type technique of the present invention, simple installation, connector
Fastening is reliable and meets its durability requirement.The endless tube piece adjacent simultaneously passes through screw bolt or rivet interlacement,
Buckle-type and screw bolt or the dual fastening means of rivet interlacement make more to consolidate during well sinking.It is sent out by this
Bright application makes open caisson longitudinal direction tension, bending resistance and lateral shearing resistance be increased dramatically, also helps reduction project cost, engineering
Field-hardened construction effectively reduces uncontrollable technical risk such as slip casting.
Technical solution of the present invention: open caisson described in step (3) sinks to end and is equipped with blade foot, the blade foot and horizontal direction
At an angle.
By using above-mentioned technical proposal, open caisson of the present invention sinks to end and is equipped with blade foot, and blade foot and horizontal direction are in certain angle
Degree can reduce caisson cutting edge end resistance, accelerate well sinking speed.
Technical solution of the present invention: the longitudinal section of the connector is epsilon-type structure, three tenons of connector etc.
Width flushes；The longitudinal section of the card slot internal cavities is concave-shaped structure, and two tenons of cavity flush and inside tenon is wide
Degree is twice of outside tenon width；The height of the connector tenon is identical as the height of card slot cavity tenon.
By using above-mentioned technical proposal, connector concrete shape of the invention, the structure construction is convenient, tight between endless tube piece
Gu power is strong.
Technical solution of the present invention: the both ends of the putting hole are connected to the outside of section of jurisdiction unit, the placement
Hole includes tapered abutting hole, connecting hole and angling hole, and the abutting hole is set on the inner face of the section of jurisdiction unit,
One end of the angling hole is set on the joint face of two horizontal connected section of jurisdiction units.
By using above-mentioned technical proposal, the concrete shape of putting hole of the invention, the structure can make two adjacent sections of jurisdiction single
Member preferably links together.
Technical solution of the present invention: the aperture of the adjustment hole opens up between direction and the radial direction of the section of jurisdiction unit
Angle is acute angle, and the inclined direction of angle is to be arranged along the direction that opens up of the spliced eye, and the bottom end of the regulating part is
Horizontally disposed, when the regulating part is to when precession inside the adjustment hole, the bottom end of the regulating part is to far from described
The movement of putting hole direction.
By using above-mentioned technical proposal, regulating part of the invention enters spliced eye by adjustment hole and puts to far from described
The movement of hole direction is set, fastener is fixed in section of jurisdiction, two adjacent section of jurisdiction units is made preferably to link together.
Technical solution of the present invention: further including carrying out scour protection in open caisson surrounding as needed in the construction process.
It is of the invention to carry out scour protection in open caisson surrounding in the sinking later period by using above-mentioned technical proposal, it can pass through
The measures such as air curtain, jetting solve the problems, such as stagnant heavy；Mud is uniformly inhaled, uniform sinking, implementing monitoring, slowly rectifies a deviation in time, keep good
What several posture are to guarantee caisson structure stress safety, the key element of smooth construction.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention, for those of ordinary skill in the art, without any creative labor, according to
These attached drawings obtain other attached drawings and still fall within scope of the invention.
Fig. 1 is assembled open caisson perspective view of the present invention；
Fig. 2 is endless tube piece connector side of the present invention structural schematic diagram；
Fig. 3 is endless tube piece card slot side of the present invention structural schematic diagram；
Fig. 4 is the A-A sectional view of Fig. 1 of the present invention；
Fig. 5 is two section of jurisdiction unit junction explosive views of the invention；
Fig. 6 is screw bolt connection schematic diagram between the connected two endless tube pieces of the present invention；
Fig. 7 is blade foot structural schematic diagram of the present invention.
In figure, 1, endless tube piece；11, section of jurisdiction unit；111, fixation hole；1111, adjustment hole；1112, spliced eye；112, it places
Hole；1121, the abutting hole of taper；1122, connecting hole；1123, angling hole；113, screw bolt；12, card slot；13, connector；
14, fastener；15, open caisson sinks to end；151, blade foot；16, regulating part.
Specific embodiment
Technical solution of the present invention is clearly and completely described below in conjunction with attached drawing, it is clear that described reality
Applying example is a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field is common
Technical staff's every other embodiment obtained without making creative work belongs to the model that the present invention protects
It encloses.
In the description of the present invention, it should be noted that term " center ", "lower", "left", "right", " is erected at "upper"
Directly ", the orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, only
It is that for the convenience of describing the present invention and simplifying the description, rather than the device or element of indication or suggestion meaning must have specifically
Orientation is constructed and operated in a specific orientation, therefore is not considered as limiting the invention.In addition, term " first ", " the
Two ", " third " is used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.
As shown in Fig. 1-7, by taking Project Areas is strand (river) area as an example, a kind of construction method of assembled circular open caisson,
Include the following steps:
(1), the prefabricated place of open caisson is completed, reinforcement operation place is flattened；
Except the open caisson in addition to the prefabricated open caisson in land, poured in bank and water it is pre- must to form open caisson using island is manually built
Platform processed in line with adaptation to local conditions, is gathered materials on the spot, the principle of safe and reliable, economical and practical selection dike structure, while according to engineering
Area is that the geological condition of the relatively conventional soft layer in strand (river) area is used in conjunction with the practical experience of similar built engineering
Polypropylene woven cloth sandstone charging pipe bag ramp type soil bank of stone structure, sand bedding course construction adds water vibration compacting using vibrating spear, according to heavy
Whether the weight of well production, concrete cushion width under caisson cutting edge, review sand bedding course thickness meet allowable bearing capacity of foundation soil
It is required that in lower layer density through after the assay was approved, upper layer construction can be carried out；
To ensure water of the open caisson in production and the initial stage drainage sand bedding course that sinks, one is respectively arranged among the quadrangle and four sides of open caisson
Mouth sump, bottom of catchmenting protrude into sand bedding course bottom surface or less 50cm, and top is higher by sand bedding course 10cm, sump total height
For 4.1m, sump is made of φ 609m m × 12m m steel pipe, and bottom is blocked with steel plate, and side wall opens trash rack
Hole, inlet opening is 20m m × 300m m, interval-staggered, and open area is 3.0m long, is located at 3.5m thickness sand pad
The intermediate position of layer, sump steel pipe inlet opening range are externally wrapped with strainer 3, and sump is arranged 8 mouthfuls altogether, well Nei Gebu
An immersible pump is set, in time to extract well internal water accumulation；
Land builds open caisson and does not need to carry out basement process mostly, the reason is that land sunk well foundation is generally not required to plus soil is filled out
Height, foundation soil have passed through long-term consolidation, after well sinking, excavate the soil body in well, even if open caisson water-filling, open caisson bottom ground
Do not increase additional stress；Present case need pre-cast sink well construction before, using high-pressure rotary jet grouting pile to sunk well foundation at
Reason；
(2), factory manufactures section of jurisdiction unit 11, and the delivery tube that completes blade unit 11 reaches open caisson scene, and in-site installation section of jurisdiction is single
Member 11 forms endless tube piece 1, and multiple endless tube pieces 1 are longitudinal assembled, at least completes a part of open caisson；
Caisson wall thickness is usually determined by following three aspects factor:
1. meeting sinking needs.According to construction experience, subsidence factor is best between 1.10~1.25.It must less than 1.05
It must thicken, must be thinned greater than 1.25, cannot such as be thinned, then open caisson height reduces well body self weight when should reduce sinking；
2. meeting structural strength and rigidity needs.The determination of caisson wall thickness with the arrangement of wall beam is related in length and breadth in well, it is necessary to
Structural strength and rigidity checking are carried out, determines whether arrangement of reinforcement is suitable；
3. meeting anti-floating needs.It should carry out the construction time after back cover and use phase antifloating computation, just can determine that caisson wall thickness is
It is no suitable.
(3), open caisson is sunk into end and sinks down into prefabricated place, implement open caisson first time sinking construction；
(4), when endless tube piece 1 is dropped to a certain distance from horizontal plane, implement the subsequent sinking construction of open caisson, i.e., multiple endless tubes
Increase new endless tube piece 1 on piece 1, be continuously increased open caisson draft, until open caisson reaches predetermined depth；
(5), implement open caisson construction of bottom plates；
Wherein, scour protection is carried out in open caisson surrounding as needed in the construction process.
The connection type of specific section of jurisdiction is that the equal circumferential direction in 1 two sides of endless tube piece is embedded with several card slots 12, adjacent two endless tubes piece 1
Between by several connectors 13 it is longitudinally connected, 13 both ends of connector buckle into the corresponding card of adjacent two endless tubes piece 1 respectively
In slot 12, and the adjacent endless tube piece also passes through screw bolt 113 or rivet interlacement, and unit 11 one end in section of jurisdiction, which is equipped with, to be fixed
Hole 111, and the other end is equipped with putting hole 112, the fixation hole 111 includes adjustment hole 1111 and spliced eye 1112, spliced eye
1112 are connected with adjustment hole 1111, and are connected with adjacent 11 putting hole 112 of section of jurisdiction unit, and sliding connects in putting hole 112
It is connected to fastener 14, the other end of fastener 14 is plugged in spliced eye 1112, is provided in adjustment hole 1111 tight for abutting
The regulating part 16 of firmware 14.
The specific structure of specific connector 13 is that the longitudinal section of connector 13 is epsilon-type structure, three of connector 13
Tenon is wide to be flushed；The longitudinal section of 12 internal cavities of card slot is concave-shaped structure, and two tenons of cavity flush and inside tenon
Width is twice of outside tenon width；The height of 13 tenon of connector is identical as the height of 12 cavity tenon of card slot.
The both ends of specific putting hole 112 are connected to the outside of section of jurisdiction unit 11, and putting hole 112 includes tapered supports
Hole 1121, connecting hole 1122 and angling hole 1123 are connect, hole 1121 is abutted and is set on the inner face of section of jurisdiction unit 11, angling hole 1123
One end be set on the joint face of two horizontal connected section of jurisdiction units 11.It is single that the aperture of adjustment hole 1111 opens up direction and section of jurisdiction
Angle is acute angle between the radial direction of member 11, and the inclined direction of angle is to be arranged along the direction that opens up of spliced eye 1112, regulating part
16 bottom end be it is horizontally disposed, when regulating part 16 is to when 1111 inside precession of adjustment hole, the bottom end of regulating part 16 is to being located remote from
The movement of 112 direction of hole.
The invention has the advantages that:
(1) segment prefabricated to separate with scene, substantially without placing of material, construction site is taken up little area at scene；
(2) section of jurisdiction prefabrication, execution conditions are good, and quality is easy to control；
(3) on-site personnel quantity and need field operation project amount small, construction safety controls difficulty and reduces；
(4) construction cost is lower than former Construction Mode；
(5) prefabricated to sink parallel with in-site installation, the concrete strength rise time that field cast-in-place mode needs is avoided, is constructed
Speed is fast；
(6) according to site operation sinking situation, top section of jurisdiction mounting height can be flexibly increased or decreased, speed of application is controllable.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (7)
1. a kind of construction method of assembled circular open caisson, it is characterised in that include the following steps:
(1), it completes pre-cast sink well place cofferdam and draws water, flatten reinforcement operation place；
(2), delivery tube blade unit reaches open caisson scene, and in-site installation section of jurisdiction unit forms endless tube piece, and multiple endless tube pieces are longitudinally spelled
Dress at least completes a part of open caisson；
(3), open caisson is sunk into end and sinks down into prefabricated place, implement open caisson first time sinking construction；
(4), when the endless tube piece drops to certain distance from the ground, implement the subsequent sinking construction of open caisson, i.e., it is multiple described
Endless tube on piece increases new endless tube piece, is continuously increased well sinking depth, until open caisson reaches predetermined depth；
(5), implement open caisson construction of bottom plates.
2. a kind of construction method of assembled circular open caisson according to claim 1, which is characterized in that step (2) is described
The equal circumferential direction in endless tube piece two sides be embedded with several card slots, it is longitudinally connected by several connectors between adjacent two endless tubes piece, it is described
Connector both ends buckled into the corresponding card slot of adjacent two endless tubes piece respectively, the adjacent endless tube piece passes through screw bolt company
It connects, described section of jurisdiction unit one end is equipped with fixation hole, and the other end is equipped with putting hole, and the fixation hole includes adjustment hole and inserts
Hole is connect, the spliced eye is connected with adjustment hole, and is connected with adjacent section of jurisdiction unit putting hole, in the putting hole
Fastener is slidably connected, the other end of the fastener is plugged in the spliced eye, is provided in the adjustment hole
For abutting the regulating part of the fastener.
3. a kind of construction method of assembled circular open caisson according to claim 1, which is characterized in that step (3) is described
Open caisson sink to end be equipped with blade foot, the blade foot is at an angle to the horizontal direction.
4. a kind of construction method of assembled circular open caisson according to claim 2, which is characterized in that the connector
Longitudinal section be epsilon-type structure, three tenons of connector are wide to be flushed；The longitudinal section of the card slot internal cavities is recessed
Two tenons of character form structure, cavity flush and inside tenon width is twice of outside tenon width；The connector is convex
The height of tenon is identical as the height of card slot cavity tenon.
5. a kind of construction method of assembled circular open caisson according to claim 1, which is characterized in that the putting hole
Both ends be connected to the outside of section of jurisdiction unit, the putting hole includes tapered abutting hole, connecting hole and angling hole, institute
The abutting hole stated is set on the inner face of the section of jurisdiction unit, and one end of the angling hole is set to two horizontal connected pipes
On the joint face of blade unit.
6. a kind of construction method of assembled circular open caisson according to claim 1, which is characterized in that the adjustment hole
To open up angle between direction and the radial direction of the section of jurisdiction unit be acute angle in aperture, and the inclined direction of angle is to insert along described
Connect hole opens up direction setting, the bottom end of the regulating part be it is horizontally disposed, when the regulating part is to inside the adjustment hole
When precession, the bottom end of the regulating part is moved to far from the putting hole direction.
7. a kind of construction method of assembled circular open caisson according to claim 1-6, which is characterized in that also wrap
It includes and carries out scour protection in open caisson surrounding as needed in the construction process.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910323442.2A CN110185053A (en) | 2019-04-22 | 2019-04-22 | A kind of construction method of assembled circular open caisson |
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| CN201910323442.2A CN110185053A (en) | 2019-04-22 | 2019-04-22 | A kind of construction method of assembled circular open caisson |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111424697A (en) * | 2020-04-19 | 2020-07-17 | 中铁上海工程局集团有限公司 | Construction method for prefabricating deep and large open caisson by slicing |
| CN112359858A (en) * | 2020-12-04 | 2021-02-12 | 天津市丙辉建材科技开发有限公司 | Sinking well curtain structure and construction method |
| CN112554218A (en) * | 2020-12-11 | 2021-03-26 | 中隧隧盾国际建设工程有限公司 | Construction method of assembled open caisson |
| CN114635441A (en) * | 2022-01-26 | 2022-06-17 | 中铁十五局集团有限公司 | Double-layer duct piece construction method applied to vertical open caisson type deep-buried structure |
| CN114775667A (en) * | 2022-04-28 | 2022-07-22 | 中铁十五局集团有限公司 | Novel segment installation method for meeting effective connection and seepage prevention of open caisson |
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| CN104790974A (en) * | 2015-04-29 | 2015-07-22 | 浙江省交通规划设计研究院 | City subway overlapped shield tunnel segment structure adopting special longitudinal connecting pieces |
| CN107700510A (en) * | 2017-09-29 | 2018-02-16 | 山西鑫联智慧科技股份有限公司 | A kind of pre-assembled formula open caisson |
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| CN112359858A (en) * | 2020-12-04 | 2021-02-12 | 天津市丙辉建材科技开发有限公司 | Sinking well curtain structure and construction method |
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| CN114635441A (en) * | 2022-01-26 | 2022-06-17 | 中铁十五局集团有限公司 | Double-layer duct piece construction method applied to vertical open caisson type deep-buried structure |
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Application publication date: 20190830 |