CN104294835A - Steel sheet pile cofferdam constructing method - Google Patents
Steel sheet pile cofferdam constructing method Download PDFInfo
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- CN104294835A CN104294835A CN201410541016.3A CN201410541016A CN104294835A CN 104294835 A CN104294835 A CN 104294835A CN 201410541016 A CN201410541016 A CN 201410541016A CN 104294835 A CN104294835 A CN 104294835A
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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
- E02D19/02—Restraining of open water
- E02D19/04—Restraining of open water by coffer-dams, e.g. made of sheet piles
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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
- E02D5/02—Sheet piles or sheet pile bulkheads
- E02D5/03—Prefabricated parts, e.g. composite sheet piles
- E02D5/04—Prefabricated parts, e.g. composite sheet piles made of steel
- E02D5/08—Locking forms; Edge joints; Pile crossings; Branch pieces
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
- E02D7/18—Placing by vibrating
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2250/00—Production methods
- E02D2250/0023—Cast, i.e. in situ or in a mold or other formwork
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2250/00—Production methods
- E02D2250/0061—Production methods for working underwater
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Bulkheads Adapted To Foundation Construction (AREA)
Abstract
The invention relates to the technical field of cofferdam construction, particularly to a steel sheet pile cofferdam constructing method. The method comprises (1) preparation; (2) steel sheet pile plugging and driving including mounting a first support ring beam as a guide frame for pile plugging and driving, during the pile plugging and driving, enabling the backs of steel sheet piles to be close to the guide frame, slowly lowering a lifting hook over the pile plugging and driving to ensure alignment and straightness of the steel sheet piles; (3) steel sheet pile closure including closing the steel sheet piles in the plugging order from the surrounding sides to the four corners; (4) foundation pit digging including performing cap foundation pit earth digging through a high-front shovel, and sucking soil through a mud pump in a layered, partitioned and symmetric mode; (5) concrete ground sealing including performing ground-sealing concrete underwater filling on the bottom of the cofferdam; (6) steel sheet pile cofferdam support including, when the strength of underwater concrete reaches 75% of a design strength, pumping water to achieve wailing support construction.
Description
Technical field
The present invention relates to the technical field of cofferdam construction, particularly, relate to a kind of steel sheet pile cofferdam construction method.
Background technology
Steel sheet-pile cofferdam is conventional a kind of sheet pile cofferdam.Steel sheet pile is a kind of shaped steel with fore shaft, and there are straight plate shape, flute profile and Z-shaped etc. in its cross section, has full range of sizes and interlocking form, common are Ademilson formula of drawing, clarke Wan Nashi etc.
The advantage of steel sheet-pile cofferdam is: intensity is high, easily squeezes into hard soil layer; Water resistance is good, can at dark subaqueous work; The cofferdam of various profile can be formed on demand, and can repeatedly use.Therefore, its is of many uses.
But, in steel sheet pile cofferdam construction process, due to problems such as the geology in place, engineering place, the hydrology and steel sheet pile self materials, the problem such as injection difficulty, drilling depth can be caused slower, thus had a strong impact on development of projects.
Based on above-mentioned analysis, the present invention proposes a kind of efficient, safe steel sheet pile cofferdam construction method, effectively can improve the efficiency of construction of steel sheet-pile cofferdam.
Summary of the invention
Consider problem in steel sheet pile cofferdam construction and make the present invention, for this reason, main purpose of the present invention is to provide a kind of steel sheet pile cofferdam construction scheme efficiently, to solve relevant issues.
For achieving the above object, according to an aspect of the present invention, a kind of steel sheet pile cofferdam construction method is provided.
Steel sheet pile cofferdam construction method of the present invention comprises:
(1) preparation
The place of construction steel sheet pile within the scope of cofferdam is cleared up;
Described steel sheet pile is corrected and does fore shaft by checking, wherein, described fore shaft is make standard with the steel sheet pile that is of the same type, same specification of a block length about 2 meters by inspection method, hoist engine is adopted to pull standard steel sheet pile flatcar, described steel sheet pile is checked from pile crown to stake tail, if check by; come into operation, if defective, then carry out correcting or eliminate need not;
Reject the residue knurl that described steel sheet pile use in early stage rear surface stays because of welding steel, reinforcing bar;
Vibrating hammer beats to pull out the key equipment of described steel sheet pile, beat pull out before to check specially, guarantee that circuit is unimpeded, normally, terminal voltage will reach 380-420V to function;
To coating butter mixture ointment in the fore shaft of the described steel sheet pile of passed examination.
(2) inserted to play of steel sheet-pile cofferdam
Before inserted to play is carried out to described steel sheet pile, first is installed and supports collar tie beam, as leading truck during inserted to play, and on described support collar tie beam, the sideline of every root steel sheet pile is drawn by described steel sheet pile width, then welding guiding truss on described collar tie beam, the upper and lower limit of described leading truck arranges stopping means, and size is than described steel sheet pile every limit amplification 1cm;
During inserted to play, the described steel sheet pile stake back of the body is near described leading truck, and suspension hook is slowly transferred by limit insert edge, observes at orthogonal both direction plumb bob simultaneously, guarantees that described steel sheet pile is just being inserted, it is straight to insert;
After determining that steel sheet pile inserted to play described in first is qualified, then with first described steel sheet pile for benchmark, then to both sides symmetrical other steel sheet pile of inserted to play to design attitude.
(3) steel sheet pile closes up
The order that described steel sheet pile is squeezed into is closed up to 4 angles successively by surrounding sideline midpoint, wherein, closes up and should select near the stake of angle, general digression stake 4 ~ 5, if distance has gap, adjustable closes up the distance of limit adjacent one side from described leading truck.
(4) excavation of foundation pit
Adopt high-front shovel to carry out cushion cap pit earthwork excavation, auxiliary slush pump carries out suction mud, and layering and zoning sequential production is answered in described suction mud operation, and symmetrical construction.
(5) concrete sealing bottom
Carry out bottom concrete underwater grouting to bottom cofferdam, wherein, described perfusion adopts subitem to cut ball pouring construction by conduit, for carrying out one by one from lower to eminence, simultaneously from periphery to centre.
(6) steel sheet-pile cofferdam supporting
After described underwater concrete intensity reaches 75% of design strength, draw water and carry out waling Construction of Supporting, namely the degree of depth of drawing water to first floor waling supports lower 0.5m, first waling is installed support, after inner support installation, proceed to draw water to second layer waling support lower 0.5m carry out the installation of second inner support the like until all support complete, foundation ditch water is all extracted out complete, adopts the draining of low lift and large flow rate pumping equipment.
Preferably, in described inserted to play process, after described steel sheet pile inserted to play to design elevation, weld with described leading truck immediately.
Preferably, in described inserted to play process, described steel sheet pile first utilizes deadweight lower slotting, when can not descend slotting when conducting oneself with dignity, just pressurizes.
Preferably, in described inserted to play process, the verticality of described steel sheet pile is controlled with plumb bob.
Preferably, in described inserted to play process, controlled in the verticality of both direction to described steel sheet pile with two transits.
Preferably, in described inserted to play process, meet large boulder or other ambiguous barriers, cause described steel sheet pile depth of drive inadequate, adopt corner pile or arc-shaped pile cut-through thing.
Preferably, in described inserted to play process, described steel sheet pile is subject to the lateral compression amount of force such as block stone or other ambiguous barriers difference in mud and deflection occurs in ooze quality section extrusion inlet procedure, following measures is taked to rectify a deviation: l.0m steel sheet pile up to be pulled out ~ 2.0m in generation deflected position, down hammer into shape again into, so up and down reciprocatingly extricate oneself from a predicament and brace oneself up to action for several times, allow the position of described steel sheet pile be corrected.
Preferably, in described inserted to play process, if described steel sheet pile is comparatively large along axis inclination, shaped pile is adopted to correct; If gradient is less, with hoist engine or cucurbit and cable wire, hammering is more oppositely held in stake.
Preferably, in described inserted to play process, if occur to bring adjacent stake into phenomenon, the measure of employing is that adjacent several described steel sheet pile is welded together, and is coated with the sliding agents such as butter on the connection fore shaft of current construction piling.
Preferably, when described steel sheet pile fore shaft does not closely leak, with cotton-wool etc. at inner side caulked, one deck waterproof colour bar cloth is wrapped up in outside.
Preferably, when described steel sheet-pile cofferdam draws water, in the water of outside, the mixture of a large amount of wood chip or cavings and slag is spread at crack place.
Preferably, in described concrete sealing bottom process, described conduit should raise with described concrete surface and slowly promote, and described depth of tremie should adapt with described conduit inner concrete fall depth.
Preferably, in described concrete sealing bottom process, high and the spread condition of described concrete heap should be noted, correct adjustment slump and described depth of tremie, form suitable heap after every tray concrete is poured into high and not suddenly in the flowing gradient of 1:5, conduit described in withdrawing should strictly make described conduit not intake.
Preferably, in described concrete sealing bottom process, the described concrete slump controls at 18 ~ 22cm, and the concrete sand coarse aggregate ratio general control of first batch of perfusion should 45% ~ 48%.
Preferably, before described concrete sealing bottom perfusion, by described conduit layout points, piecemeal is carried out to cushion cap, lay elevation control point, should check by the concrete surface of survey mark to substrate arranged in real time in filling process, ensure the smooth of base concrete face.
Preferably, after described concrete sealing bottom completes, its top mark is high-leveled and difficult consistent to accomplish, its top mark is high should be controlled in the scope of+10cm to-20cm.
By means of technical scheme provided by the invention, by efficient steel sheet pile cofferdam construction scheme, bridge construction construction can be carried out safely and fast, improve construction quality.
Other features and advantages of the present invention will be set forth in the following description, and, partly become apparent from manual, or understand by implementing the present invention.Object of the present invention and other advantages realize by structure specifically noted in write manual, claims and accompanying drawing and obtain.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, and form a application's part, schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is steel sheet pile cofferdam construction flow chart;
Fig. 2 is tremie placing sequential schematic.
Detailed description of the invention
Functional overview
Consider problem in steel sheet pile cofferdam construction and make the present invention, for this reason, main purpose of the present invention is to provide a kind of steel sheet pile cofferdam construction scheme efficiently, to solve relevant issues.
Below in conjunction with accompanying drawing, embodiments of the invention are described.It should be noted that, when not conflicting, the technical characteristic in embodiments of the invention and embodiment can be combined with each other, all within protection scope of the present invention.In addition, for convenience of description, employ step number hereinafter, but this should not be construed as limitation of the present invention, in addition, although each step described in following methods shows logical order in flow charts, in some cases, can be different from the step shown or described by order execution herein.
Embodiment of the method
According to embodiments of the invention, provide a kind of steel sheet pile cofferdam construction method.
Fig. 1 shows the flow process of the steel sheet pile cofferdam construction method according to the inventive method embodiment, and as shown in Figure 1, the steel sheet pile cofferdam construction method according to the inventive method embodiment comprises the steps:
Step S102, preparation
The place of construction steel sheet pile within the scope of cofferdam is cleared up;
Described steel sheet pile is corrected and does fore shaft by checking, wherein, described fore shaft is make standard with the steel sheet pile that is of the same type, same specification of a block length about 2 meters by inspection method, hoist engine is adopted to pull standard steel sheet pile flatcar, described steel sheet pile is checked from pile crown to stake tail, if check by; come into operation, if defective, then carry out correcting or eliminate need not;
Reject the residue knurl that described steel sheet pile use in early stage rear surface stays because of welding steel, reinforcing bar;
Vibrating hammer beats to pull out the key equipment of described steel sheet pile, beat pull out before to check specially, guarantee that circuit is unimpeded, normally, terminal voltage will reach 380-420V to function;
To coating butter mixture ointment in the fore shaft of the described steel sheet pile of passed examination.
Step S104, the inserted to play of steel sheet-pile cofferdam
Before inserted to play is carried out to described steel sheet pile, first is installed and supports collar tie beam, as leading truck during inserted to play, and on described support collar tie beam, the sideline of every root steel sheet pile is drawn by described steel sheet pile width, then welding guiding truss on described collar tie beam, the upper and lower limit of described leading truck arranges stopping means, and size is than described steel sheet pile every limit amplification 1cm;
During inserted to play, the described steel sheet pile stake back of the body is near described leading truck, and suspension hook is slowly transferred by limit insert edge, observes at orthogonal both direction plumb bob simultaneously, guarantees that described steel sheet pile is just being inserted, it is straight to insert;
After determining that steel sheet pile inserted to play described in first is qualified, then with first described steel sheet pile for benchmark, then to both sides symmetrical other steel sheet pile of inserted to play to design attitude.
The construction point of " pitching pile is honest, and namely dispersion entangles, and adjustment is closed up " in inserted to play process, must be observed.
Step S106, steel sheet pile closes up
The order that described steel sheet pile is squeezed into is closed up to 4 angles successively by surrounding sideline midpoint, wherein, closes up and should select near the stake of angle, general digression stake 4 ~ 5, if distance has gap, adjustable closes up the distance of limit adjacent one side from described leading truck.
Step S108, excavation of foundation pit
Adopt high-front shovel to carry out cushion cap pit earthwork excavation, auxiliary slush pump carries out suction mud, and layering and zoning sequential production is answered in described suction mud operation, and symmetrical construction.
Step S110, concrete sealing bottom
Carry out bottom concrete underwater grouting to bottom cofferdam, wherein, described perfusion adopts subitem to cut ball pouring construction by conduit, for carrying out one by one from lower to eminence, simultaneously from periphery to centre.
Step S112, steel sheet-pile cofferdam supporting
After described underwater concrete intensity reaches 75% of design strength, draw water and carry out waling Construction of Supporting, namely the degree of depth of drawing water to first floor waling supports lower 0.5m, first waling is installed support, after inner support installation, proceed to draw water to second layer waling support lower 0.5m carry out the installation of second inner support the like until all support complete, foundation ditch water is all extracted out complete, adopts the draining of low lift and large flow rate pumping equipment.
By the technical scheme that the present embodiment provides, the problem in steel sheet pile cofferdam construction can be solved, thus the workmanship of steel sheet-pile cofferdam can be improved.
The details of above-mentioned process is described below in detail.
(1) step S102
Steel sheet pile, reaching the last and the groove port at pile top place should being closed, avoids earth to clamp-on, and fore shaft should be coated with butter or other grease.For long neglected and in disrepair, fore shaft is out of shape, the steel sheet pile that corrosion is serious, should carry out trimming and correct, diastrophic stake, and the methods such as available hydraulic jack top pressure or fire baking are corrected.
(2) step S104
In whole work progress, control the verticality of every sheet stake with plumb bob or two transits all the time, adjust in time;
Every a slice steel sheet pile first utilizes deadweight lower slotting, when can not descend slotting when conducting oneself with dignity, just pressurizes;
After steel sheet pile inserted to play to design elevation, weld with leading truck immediately.
Because geologic structure at the bottom of foundation ditch is complicated, steel sheet pile is beaten to pull out in construction and is often run into some difficult problems, and available some way following solves:
Sometimes meet large boulder or other ambiguous barriers in a, piling process, cause steel sheet pile depth of drive inadequate, then adopt corner pile or arc-shaped pile cut-through thing.
B, steel sheet pile are subject to the lateral compression amount of force difference such as block stone or other ambiguous barriers in mud and deflection easily occur in ooze quality section extrusion inlet procedure, following measures is taked to rectify a deviation: l.0m steel sheet pile up to be pulled out ~ 2.0m in generation deflected position, down hammer into shape again into, so up and down reciprocatingly extricate oneself from a predicament and brace oneself up to action for several times, the obstructions such as large block stone can be made to be shaken broken or make it be subjected to displacement, allow the position of steel sheet pile be corrected, reduce the gradient of steel sheet pile.
When c, steel sheet pile are larger along axis inclination, adopt shaped pile to correct, shaped pile is generally the sheet pile that wide at the top and narrow at the bottom and width is greater than or less than normal width, and shaped pile can carry out welding processing according to according to actual inclination; Also with hoist engine or cucurbit and cable wire, hammering again can be oppositely held in stake when gradient is less.
D, ooze matter basis are softer, and construction sometimes occurs to bring adjacent stake into phenomenon, and the measure of employing is that adjacent several stakes are welded together, and on the connection fore shaft of current construction piling, are coated with the lubrication Ji such as butter reduce resistance.
(3) step S106
Preparation before closing up: when being about to close up, starts to measure and calculates the air line distance bottom steel sheet pile, then according to the width of steel sheet pile, calculates the sheet number of required steel sheet pile, determines next step steel sheet pile how inserted to play by this.The adjustment process of stake when closing up, for the ease of closing up, the two panels stake of closing up place should be one high and one low.There are 4 faces in square bar cofferdam, the every a slice steel sheet pile beaten is all vertical with tangential direction along the normal of leading truck, close up and should select near the stake of angle (general digression stake 4 ~ 5), if distance has gap, adjustable closes up the distance of limit adjacent one side from leading truck.In order to prevent from closing up place's two panels stake not in a plane, stake direction, angle must be adjusted, allowing the steel sheet pile fore shaft on its fore shaft and opposite try one's best keeping parallelism.
(4) step S108
After steel sheet-pile cofferdam completes, carry out soil excavation under water and remove (coordinating artificial underwater desilting), remove to absolute altitude at the bottom of bottom concrete, carry out underwater concrete construction.
(5) step S110
After cushion cap excavation of foundation pit, to carrying out the thick bottom concrete underwater grouting of 2.0m bottom cofferdam, bottom concrete underwater grouting bottom concrete adopts C25 label.
The concrete back cover of steel sheet-pile cofferdam, according to on-site actual situations, adopts underwater concrete back cover constructure scheme, observes cofferdam water retaining stagnant water effect: if a small amount of percolating water appears in steel sheet-pile cofferdam inner surface, available cotton-wool carries out local stoppages simultaneously.
A, under water bottom concrete pouring squence: during filling concrete, conduit once can not cut ball perfusion simultaneously, adopts subitem to cut ball pouring construction (as shown in Figure 2) by pipe.Its pouring squence carries out from lower one by one to eminence, simultaneously from periphery to centre, in order to avoid substrate laitance concentrates on edge of foundation.In filling process, conduit should raise with concrete surface and slowly promote, and depth of tremie should adapt with conduit inner concrete fall depth.In filling process, should note the high and spread condition of concrete heap, correct adjustment slump and depth of tremie, form suitable heap after every tray concrete is poured into high and not suddenly in the flowing gradient of 1:5, withdrawing conduit should strictly make conduit not intake.
B, concrete sealing bottom plan carry out back cover by buffering technique after first surrounding, at steel cofferdam direction across bridge, vertical bridge to the multiple conduit point of location arrangements, successively expect back cover in the first batch, then continuously carry out filling concrete after opening quotation.
C, for making bottom concrete under water have good mobility, the concrete slump controls at 18 ~ 22cm, and the concrete sand coarse aggregate ratio general control of first batch of perfusion should 45% ~ 48%.Consider during concrete sealing bottom to use concrete mixer feeding, so that and the conversion of feeding between each conduit point.Multimetering is wanted, the flow direction of moment grasp bottom concrete and elevation in the process of concrete sealing bottom.Concrete will be worked continuously after expecting in the first batch to start and be accomplished without any letup.
To by conduit layout points, piecemeal is carried out to cushion cap before the perfusion of d, back cover, lay elevation control point, should check by the concrete surface of survey mark to substrate arranged in real time in filling process, ensure the smooth of base concrete face.After underwater concrete back cover completes, its top mark is high-leveled and difficult consistent to accomplish, its top mark is high should be controlled in the scope of+10cm to-20cm.After concreting completes, arrange professional's submarine inspection concrete pouring quality, short position supplements.
(6) step S112
In cofferdam, sealing and the adoptable technology of draining have:
A, steel sheet pile generally should be coated with the mixture such as butter, sawdust before squeezing in fore shaft.When fore shaft does not closely leak, with cotton-wool etc. at inner side caulked, one deck waterproof colour bar cloth is wrapped up in outside, plays waterproof action.
The sealing leaking-stopping measure of steel sheet pile will be strengthened in b, steel sheet-pile cofferdam pump process.When drawing water, in the water of outside, the mixture of a large amount of wood chip or cavings and slag is spread at crack place simultaneously, makes it be carried secretly by water and blocks voluntarily to leaking, the measures such as place, employing local concrete back cover of leaking at footing.
After c, steel sheet pile support water stop complete, carry out substrate cleaning work.Dig sump in cushion cap corner, periphery does gutter, gets rid of in cofferdam in time seep water with water pump.
In sum, by means of technical scheme of the present invention, steel sheet pile cofferdam construction can be carried out efficiently and safely, promote bridge construction quality.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (16)
1. a steel sheet pile cofferdam construction method, is characterized in that, comprising:
(1) preparation
The place of construction steel sheet pile within the scope of cofferdam is cleared up;
Described steel sheet pile is corrected and does fore shaft by checking, wherein, described fore shaft is make standard with the steel sheet pile that is of the same type, same specification of a block length about 2 meters by inspection method, hoist engine is adopted to pull standard steel sheet pile flatcar, described steel sheet pile is checked from pile crown to stake tail, if check by; come into operation, if defective, then carry out correcting or eliminate need not;
Reject the residue knurl that described steel sheet pile use in early stage rear surface stays because of welding steel, reinforcing bar;
Vibrating hammer beats to pull out the key equipment of described steel sheet pile, beat pull out before to check specially, guarantee that circuit is unimpeded, normally, terminal voltage will reach 380-420V to function;
To coating butter mixture ointment in the fore shaft of the described steel sheet pile of passed examination;
(2) inserted to play of steel sheet-pile cofferdam
Before inserted to play is carried out to described steel sheet pile, first is installed and supports collar tie beam, as leading truck during inserted to play, and on described support collar tie beam, the sideline of every root steel sheet pile is drawn by described steel sheet pile width, then welding guiding truss on described collar tie beam, the upper and lower limit of described leading truck arranges stopping means, and size is than described steel sheet pile every limit amplification 1cm;
During inserted to play, the described steel sheet pile stake back of the body is near described leading truck, and suspension hook is slowly transferred by limit insert edge, observes at orthogonal both direction plumb bob simultaneously, guarantees that described steel sheet pile is just being inserted, it is straight to insert;
After determining that steel sheet pile inserted to play described in first is qualified, then with first described steel sheet pile for benchmark, then to both sides symmetrical other steel sheet pile of inserted to play to design attitude;
(3) steel sheet pile closes up
The order that described steel sheet pile is squeezed into is closed up to 4 angles successively by surrounding sideline midpoint, wherein, closes up and should select near the stake of angle, general digression stake 4 ~ 5, if distance has gap, adjustable closes up the distance of limit adjacent one side from described leading truck;
(4) excavation of foundation pit
Adopt high-front shovel to carry out cushion cap pit earthwork excavation, auxiliary slush pump carries out suction mud, and layering and zoning sequential production is answered in described suction mud operation, and symmetrical construction;
(5) concrete sealing bottom
Carry out bottom concrete underwater grouting to bottom cofferdam, wherein, described perfusion adopts subitem to cut ball pouring construction by conduit, for carrying out one by one from lower to eminence, simultaneously from periphery to centre;
(6) steel sheet-pile cofferdam supporting
After described underwater concrete intensity reaches 75% of design strength, draw water and carry out waling Construction of Supporting, namely the degree of depth of drawing water to first floor waling supports lower 0.5m, first waling is installed support, after inner support installation, proceed to draw water to second layer waling support lower 0.5m carry out the installation of second inner support the like until all support complete, foundation ditch water is all extracted out complete, adopts the draining of low lift and large flow rate pumping equipment.
2. method according to claim 1, in described inserted to play process, after described steel sheet pile inserted to play to design elevation, welds with described leading truck immediately.
3. method according to claim 1, in described inserted to play process, described steel sheet pile first utilizes deadweight lower slotting, when can not descend slotting when conducting oneself with dignity, just pressurizes.
4. method according to claim 1, in described inserted to play process, controls the verticality of described steel sheet pile with plumb bob.
5. method according to claim 1, in described inserted to play process, is controlled in the verticality of both direction to described steel sheet pile with two transits.
6. method according to claim 1, in described inserted to play process, meets large boulder or other ambiguous barriers, causes described steel sheet pile depth of drive inadequate, adopts corner pile or arc-shaped pile cut-through thing.
7. method according to claim 1, in described inserted to play process, described steel sheet pile is subject to the lateral compression amount of force such as block stone or other ambiguous barriers difference in mud and deflection occurs in ooze quality section extrusion inlet procedure, following measures is taked to rectify a deviation: l.0m steel sheet pile up to be pulled out ~ 2.0m in generation deflected position, down hammer into shape again into, so up and down reciprocatingly extricate oneself from a predicament and brace oneself up to action for several times, allow the position of described steel sheet pile be corrected.
8. method according to claim 1, in described inserted to play process, if described steel sheet pile is comparatively large along axis inclination, adopts shaped pile to correct; If gradient is less, with hoist engine or cucurbit and cable wire, hammering is more oppositely held in stake.
9. method according to claim 1, in described inserted to play process, if occur to bring adjacent stake into phenomenon, the measure of employing is that adjacent several described steel sheet pile is welded together, and is coated with the sliding agents such as butter on the connection fore shaft of current construction piling.
10. method according to claim 1, when described steel sheet pile fore shaft does not closely leak, with cotton-wool etc. at inner side caulked, one deck waterproof colour bar cloth is wrapped up in outside.
11. methods according to claim 1, when described steel sheet-pile cofferdam draws water, in the water of outside, the mixture of a large amount of wood chip or cavings and slag is spread at crack place.
12. methods according to claim 1, in described concrete sealing bottom process, described conduit should raise with described concrete surface and slowly promote, and described depth of tremie should adapt with described conduit inner concrete fall depth.
13. methods according to claim 1, in described concrete sealing bottom process, high and the spread condition of described concrete heap should be noted, correct adjustment slump and described depth of tremie, form suitable heap after every tray concrete is poured into high and not suddenly in the flowing gradient of 1:5, conduit described in withdrawing should strictly make described conduit not intake.
14. methods according to claim 1, in described concrete sealing bottom process, the described concrete slump controls at 18 ~ 22cm, and the concrete sand coarse aggregate ratio general control of first batch of perfusion should 45% ~ 48%.
15. methods according to claim 1, before described concrete sealing bottom perfusion, by described conduit layout points, piecemeal is carried out to cushion cap, lay elevation control point, should check by the concrete surface of survey mark to substrate arranged in real time in filling process, ensure the smooth of base concrete face.
16. methods according to claim 1, after described concrete sealing bottom completes, its top mark is high-leveled and difficult consistent to accomplish, its top mark is high should be controlled in the scope of+10cm to-20cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410541016.3A CN104294835A (en) | 2014-10-14 | 2014-10-14 | Steel sheet pile cofferdam constructing method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410541016.3A CN104294835A (en) | 2014-10-14 | 2014-10-14 | Steel sheet pile cofferdam constructing method |
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| CN104294835A true CN104294835A (en) | 2015-01-21 |
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Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105133627A (en) * | 2015-07-28 | 2015-12-09 | 安徽省新路建设工程集团有限责任公司 | Construction method for single-wall steel sheet pile cofferdam in running water state |
| CN105155539A (en) * | 2015-08-07 | 2015-12-16 | 中交第三航务工程局有限公司 | Vibration sinking construction underwater guiding device and construction technology of grid plate pile large cylinder |
| CN105544569A (en) * | 2015-12-11 | 2016-05-04 | 中铁大桥局集团第二工程有限公司 | Block-by-block bottom sealing method for steel sheet pile cofferdam |
| CN105696608A (en) * | 2016-02-03 | 2016-06-22 | 中交第三航务工程局有限公司宁波分公司 | Closure gap protecting and folding method for steel sheet pile cofferdam |
| CN106812146A (en) * | 2017-03-13 | 2017-06-09 | 中铁二十三局集团第工程有限公司 | A kind of construction method of steel sheet-pile cofferdam concrete sealing bottom |
| CN107012878A (en) * | 2017-05-19 | 2017-08-04 | 中国水利水电第四工程局有限公司 | A kind of cofferdam construction method |
| CN107513993A (en) * | 2017-08-22 | 2017-12-26 | 中交第四公路工程局有限公司 | Overlength Straight Combination steel sheet pile construction method |
| CN107724401A (en) * | 2017-09-15 | 2018-02-23 | 浙江申诚环境工程有限公司 | The construction method of bridge pier foundation ditch |
| CN110565666A (en) * | 2019-09-24 | 2019-12-13 | 上海市水利工程集团有限公司 | Construction method of flat combined sheet pile ground connecting wall type water retaining cofferdam |
| CN110685291A (en) * | 2019-10-22 | 2020-01-14 | 中交一公局第四工程有限公司 | Supporting device for concrete cofferdam in deep water area and construction process thereof |
| CN110886248A (en) * | 2019-12-17 | 2020-03-17 | 中交路桥建设有限公司 | Construction method for temporary support in existing abutment width splicing construction |
| CN111764416A (en) * | 2019-04-02 | 2020-10-13 | 广西长长路桥建设有限公司 | Highway bridge construction cofferdam device |
| CN111980039A (en) * | 2020-06-18 | 2020-11-24 | 中铁十一局集团第一工程有限公司 | Construction method and structure of steel sheet pile cofferdam in tidal zone of sea area |
| CN113062340A (en) * | 2021-03-23 | 2021-07-02 | 中铁十六局集团第五工程有限公司 | Construction method of Larsen steel sheet pile and high-pressure jet grouting pile combined cofferdam |
| CN113404070A (en) * | 2021-06-28 | 2021-09-17 | 中铁二十局集团第三工程有限公司 | Continuous filling process for large-volume underwater bottom-sealed concrete of sea-crossing bridge |
| CN113605421A (en) * | 2021-07-12 | 2021-11-05 | 中交路桥华南工程有限公司 | Method for mounting steel sheet pile |
| CN114250797A (en) * | 2021-12-29 | 2022-03-29 | 中铁十九局集团有限公司 | Underwater concrete bottom sealing construction method for steel sheet pile cofferdam in deep water area |
| CN114411780A (en) * | 2021-12-29 | 2022-04-29 | 中铁十九局集团有限公司 | Construction method of Larsen steel sheet pile cofferdam of static pressure pile planting machine for deep water rock stratum foundation |
| CN114645549A (en) * | 2020-12-21 | 2022-06-21 | 中交第二公路工程局有限公司 | Construction method of steel sheet pile cofferdam |
| CN116122189A (en) * | 2023-04-20 | 2023-05-16 | 中铁二十二局集团第二工程有限公司 | Arch bridge dismantling method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010104235A1 (en) * | 2009-03-09 | 2010-09-16 | Chung Kwang-Ok | Excavation method of underground plaza and submarine plaza using steel casing retaining wall |
| CN104074199A (en) * | 2014-06-17 | 2014-10-01 | 杭州华能大坝安全工程技术有限公司 | Underwater bearing platform construction method |
-
2014
- 2014-10-14 CN CN201410541016.3A patent/CN104294835A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010104235A1 (en) * | 2009-03-09 | 2010-09-16 | Chung Kwang-Ok | Excavation method of underground plaza and submarine plaza using steel casing retaining wall |
| CN104074199A (en) * | 2014-06-17 | 2014-10-01 | 杭州华能大坝安全工程技术有限公司 | Underwater bearing platform construction method |
Non-Patent Citations (6)
| Title |
|---|
| 上海铁路局: "《高速铁路施工工序管理要点第1册桥梁钻孔桩基础》", 30 September 2010, 中国铁道出版社 * |
| 卿三惠等: "《土木工程施工工艺》", 31 October 2013, 中国铁道出版社 * |
| 李慧: "《市政公用公路建造师便捷手册》", 31 May 2009, 辽宁科学技术出版社 * |
| 筑龙网组: "《建筑桩基施工技术案例精选》", 30 April 2009, 中国电力出版社 * |
| 邵政权等: "《板桩法》", 31 October 2006 * |
| 铁道部第三工程局: "《铁路工程施工技术手册》", 31 July 1989, 中国铁道出版社 * |
Cited By (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105133627A (en) * | 2015-07-28 | 2015-12-09 | 安徽省新路建设工程集团有限责任公司 | Construction method for single-wall steel sheet pile cofferdam in running water state |
| CN105155539A (en) * | 2015-08-07 | 2015-12-16 | 中交第三航务工程局有限公司 | Vibration sinking construction underwater guiding device and construction technology of grid plate pile large cylinder |
| CN105544569A (en) * | 2015-12-11 | 2016-05-04 | 中铁大桥局集团第二工程有限公司 | Block-by-block bottom sealing method for steel sheet pile cofferdam |
| CN105696608A (en) * | 2016-02-03 | 2016-06-22 | 中交第三航务工程局有限公司宁波分公司 | Closure gap protecting and folding method for steel sheet pile cofferdam |
| CN106812146A (en) * | 2017-03-13 | 2017-06-09 | 中铁二十三局集团第工程有限公司 | A kind of construction method of steel sheet-pile cofferdam concrete sealing bottom |
| CN107012878A (en) * | 2017-05-19 | 2017-08-04 | 中国水利水电第四工程局有限公司 | A kind of cofferdam construction method |
| CN107513993A (en) * | 2017-08-22 | 2017-12-26 | 中交第四公路工程局有限公司 | Overlength Straight Combination steel sheet pile construction method |
| CN107724401A (en) * | 2017-09-15 | 2018-02-23 | 浙江申诚环境工程有限公司 | The construction method of bridge pier foundation ditch |
| CN111764416A (en) * | 2019-04-02 | 2020-10-13 | 广西长长路桥建设有限公司 | Highway bridge construction cofferdam device |
| CN111764416B (en) * | 2019-04-02 | 2022-05-10 | 广西长长路桥建设有限公司 | Highway bridge construction cofferdam device |
| CN110565666A (en) * | 2019-09-24 | 2019-12-13 | 上海市水利工程集团有限公司 | Construction method of flat combined sheet pile ground connecting wall type water retaining cofferdam |
| CN110685291A (en) * | 2019-10-22 | 2020-01-14 | 中交一公局第四工程有限公司 | Supporting device for concrete cofferdam in deep water area and construction process thereof |
| CN110685291B (en) * | 2019-10-22 | 2024-05-10 | 中交一公局第四工程有限公司 | Supporting device for concrete cofferdam in deepwater area and construction process of supporting device |
| CN110886248A (en) * | 2019-12-17 | 2020-03-17 | 中交路桥建设有限公司 | Construction method for temporary support in existing abutment width splicing construction |
| CN111980039A (en) * | 2020-06-18 | 2020-11-24 | 中铁十一局集团第一工程有限公司 | Construction method and structure of steel sheet pile cofferdam in tidal zone of sea area |
| CN111980039B (en) * | 2020-06-18 | 2021-12-21 | 中铁十一局集团第一工程有限公司 | Construction method and structure of steel sheet pile cofferdam in tidal zone of sea area |
| CN114645549A (en) * | 2020-12-21 | 2022-06-21 | 中交第二公路工程局有限公司 | Construction method of steel sheet pile cofferdam |
| CN113062340A (en) * | 2021-03-23 | 2021-07-02 | 中铁十六局集团第五工程有限公司 | Construction method of Larsen steel sheet pile and high-pressure jet grouting pile combined cofferdam |
| CN113404070A (en) * | 2021-06-28 | 2021-09-17 | 中铁二十局集团第三工程有限公司 | Continuous filling process for large-volume underwater bottom-sealed concrete of sea-crossing bridge |
| CN113404070B (en) * | 2021-06-28 | 2023-08-01 | 中铁二十局集团第三工程有限公司 | Sea-bridge underwater large-volume back cover concrete continuous pouring process |
| CN113605421A (en) * | 2021-07-12 | 2021-11-05 | 中交路桥华南工程有限公司 | Method for mounting steel sheet pile |
| CN114250797A (en) * | 2021-12-29 | 2022-03-29 | 中铁十九局集团有限公司 | Underwater concrete bottom sealing construction method for steel sheet pile cofferdam in deep water area |
| CN114411780A (en) * | 2021-12-29 | 2022-04-29 | 中铁十九局集团有限公司 | Construction method of Larsen steel sheet pile cofferdam of static pressure pile planting machine for deep water rock stratum foundation |
| CN116122189A (en) * | 2023-04-20 | 2023-05-16 | 中铁二十二局集团第二工程有限公司 | Arch bridge dismantling method |
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