CN109372031A - A kind of sealing material for steel pipe pile cofferdam lock - Google Patents

A kind of sealing material for steel pipe pile cofferdam lock Download PDF

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Publication number
CN109372031A
CN109372031A CN201811557753.7A CN201811557753A CN109372031A CN 109372031 A CN109372031 A CN 109372031A CN 201811557753 A CN201811557753 A CN 201811557753A CN 109372031 A CN109372031 A CN 109372031A
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CN
China
Prior art keywords
sealing
parts
lock
aggregate
reinforcing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201811557753.7A
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Chinese (zh)
Other versions
CN109372031B (en
Inventor
朱强洪
李友明
刘文忠
彭亮英
白晓红
苟伟
黄义
何科辉
周文武
付双龙
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China Railway No 2 Engineering Group Co Ltd
China Railway Hi Tech Industry Corp Ltd
Xinyun Emgineering Co Ltd of China Railway No 2 Engineering Group Co Ltd
Original Assignee
China Railway No 2 Engineering Group Co Ltd
Xinyun Emgineering Co Ltd of China Railway No 2 Engineering Group Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by China Railway No 2 Engineering Group Co Ltd, Xinyun Emgineering Co Ltd of China Railway No 2 Engineering Group Co Ltd filed Critical China Railway No 2 Engineering Group Co Ltd
Priority to CN201811557753.7A priority Critical patent/CN109372031B/en
Publication of CN109372031A publication Critical patent/CN109372031A/en
Application granted granted Critical
Publication of CN109372031B publication Critical patent/CN109372031B/en
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Classifications

    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D31/00Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
    • E02D31/02Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against ground humidity or ground water
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D19/00Keeping dry foundation sites or other areas in the ground
    • E02D19/02Restraining of open water
    • E02D19/04Restraining of open water by coffer-dams, e.g. made of sheet piles
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/22Piles
    • E02D5/24Prefabricated piles
    • E02D5/28Prefabricated piles made of steel or other metals
    • E02D5/285Prefabricated piles made of steel or other metals tubular, e.g. prefabricated from sheet pile elements

Abstract

The invention discloses a kind of sealing materials for steel pipe pile cofferdam lock, are prepared including following parts by weight raw material: 90-110 parts of aggregate, 9-11 parts of expanded clay, 3-4 parts of reinforcing material;The sealing material is to mix aggregate, expanded clay and reinforcing material by specifically proportion, latches for steel sheet-pile cofferdam, not only has excellent water-stagnating effect, it is not easy to seep water, and it is easy to use, and the caking property of lock is small, intensity is low, and the later period, which removes, to be easy, is quick;Meanwhile raw material sources are extensive, low in cost, are suitble to the large-scale application in building trade.

Description

A kind of sealing material for steel pipe pile cofferdam lock
Technical field
The present invention relates to bridge construction Material Fields, and in particular to a kind of sealing material for steel pipe pile cofferdam lock.
Background technique
With the fast development of Chinese national economy, the construction of railway and highway system is increased, four vertical eight horizontal traffic networks are It preliminarily forming, passes through high mountain, valley, river inevitably occurs, therefore makes great efforts foundation construction technology in innovation bridge water, Seem and is even more important.Bridge foundation in water mainly uses cofferdam structure form to construct at present, wherein lock steel pipe pile cofferdam is close More advanced cofferdam construction technology over year, structure is simple, strong operability, is obtained extensive use.Steel-pipe pile is latched by steel Pipe, c-type lock, T-type lock are constituted, and c-type lock is vertically connected on the left end tube wall of diameter of steel tube, and the cross section of c-type lock is The C-shaped of openings at one side.It is equipped with reinforcing rib in the side of c-type lock, on the right end tube wall of diameter of steel tube and radial location partially is vertical Be connected with T-type lock, the cross section of T-type lock be it is I-shaped, solving lock steel pipe pile cofferdam sealing is using this structure type Key point.Traditional mode is using rubber strip joint filling sealing and using sealing in cement slurry injection lock, this two ways All different degrees of existing defects clog rubber strip in lock gap using rubber strip joint filling, and operating efficiency is low, and only Water effect is undesirable.Using cement slurry is injected in lock, mortar is easy to spread with cement punching in filling process, primary to be perfused Slurry is not full, and after slurry solidification, secondary treatment is difficult, while cement slurry intensity is high, when the later period carries out steel-pipe pile extraction, rubs It is big to wipe power, increases resistance.
Summary of the invention
It is an object of the invention to overcome, water-stagnating effect existing for existing steel sheet-pile cofferdam lock sealing material is poor, the later period is clear Except difficult defect, a kind of sealing material for steel pipe pile cofferdam lock is proposed;The sealing material is that aggregate, expansion is glutinous What soil and reinforcing material were mixed by specifically proportion, it latches for steel sheet-pile cofferdam, is not only imitated with excellent sealing Fruit is not easy to seep water, and easy to use, and the caking property of lock is small, intensity is low, and the later period, which removes, to be easy, is quick;Meanwhile former material Expect from a wealth of sources, low in cost, is suitble to the large-scale application in building trade.
In order to achieve the above-mentioned object of the invention, the present invention provides a kind of sealing material for steel pipe pile cofferdam lock, packets It includes following parts by weight raw material to be prepared: 90-110 parts of aggregate, 9-11 parts of expanded clay, 3-4 parts of reinforcing material.
Wherein, the aggregate refers to the granular loose material with skeleton or filling effect, can increase sealing material water suction Compression strength and sealing performance afterwards, meanwhile, increase sealing material workability, convenient for filling, removes, and from a wealth of sources, cost It is cheap;Preferably, the aggregate is the sandstone material of partial size 2-6mm;Most preferably, the aggregate size is 3-5mm's Medium coarse sand;By preferred, the water-stagnating effect of sealing material is more preferable, and intensity is higher when sealing, and after sealing, removal is easier.
Wherein, the expanded clay refers to the clay material with two kinds of deformation behaviours of water swelling and dehydration shrinkage, Play the role of bonding and filling pore, prevents infiltration, while from a wealth of sources, low in cost;Preferably, the expanded clay For the clay material of swell-shrink total ratio >=0.5%;It is furthermore preferred that the expanded clay is one of bentonite, swelled ground or two Kind;Most preferably, the expanded clay is swelled ground;By preferred, the water-stagnating effect of sealing material is more preferable.
Wherein, the reinforcing material, which refers to, can play internal stress after dispersion sealing material absorbs water, increase compression strength Material;Preferably, the reinforcing material is the sponge of draw ratio 2-5 ︰ 1, diameter 0.5-2mm, plant fiber Material source is wide, at low cost, good with the compatibility of water, aggregate and expanded clay, is not easy to seep water;Most preferably, the plant Fibrous material is one of wood sawdust, bagasse, stalk or a variety of.
Preferably, the sealing material for steel pipe pile cofferdam lock, including following parts by weight raw material are prepared: 95- 105 parts of aggregate, 9-10 parts of expanded clay, 3-3.5 parts of reinforcing material;By optimizing raw-material weight part, it can improve and stop The water-stagnating effect of water material;Most preferably, the sealing material for steel pipe pile cofferdam lock, including following parts by weight former material Material is prepared: 100 parts of aggregate, 10 parts of expanded clay, 3.3 parts of reinforcing material.
Wherein, the sealing material for steel pipe pile cofferdam lock, is by raw material according to the ratio through being mixed with 's.
Wherein, the sealing material for steel pipe pile cofferdam lock, fill method include: that (1) measures locking notch pipe domestic demand The depth for wanting back-up sand intercepts the plastic film of corresponding length, and c-type lock and T-type lock combine place in lock steel-pipe pile, puts Enter plastic film;(2) sealing material is poured into, fills up, be compacted;(3) it after sealing material precipitating in fore shaft, repeats step (2), directly Sealing material fills up in latching.
Wherein, the sealing material for steel pipe pile cofferdam lock, the processing method for occurring leaking includes: that (1) is found Breakthrough;(2) by the way of vibration, so that sealing material in fore shaft is fallen because being vibrated, fore shaft internal pore part is filled out It fills closely knit;(3) it mends and fills out sealing material.
Preferably, it in the process method step (2) of leakage, if sealing material is difficult to fall in pipe because condensation is stuck in, adopts With in the reinforcing bar insertion fore shaft of equal length, it is repeatedly inserted into extraction, it is made loosely to fall, filling middle part gap section.
Compared with prior art, beneficial effects of the present invention:
1, sealing material of the present invention is latched for steel sheet-pile cofferdam, is not easy to seep water, and has excellent water-stagnating effect.
2, sealing material of the present invention is easy to use, and the caking property of lock is small, intensity is low, and the later period, which removes, to be easy, is quick.
3, sealing material raw material sources of the present invention are extensive, low in cost.
Specific embodiment
Below with reference to test example and specific embodiment, the present invention is described in further detail.But this should not be understood It is all that this is belonged to based on the technology that the content of present invention is realized for the scope of the above subject matter of the present invention is limited to the following embodiments The range of invention.
Embodiment 1
A kind of sealing material is mixed with by following parts by weight raw material: 100 parts of partial size be 4.75mm medium coarse sand, The wood sawdust of 10 parts of swelled ground, 3.3 parts of 2 ︰ 1 of draw ratio, diameter 1.5mm.
Embodiment 2
A kind of sealing material is mixed with by following parts by weight raw material: 90 parts of partial size is the mountain flour of 2mm, 11 parts The straw powder of bentonite, 3 parts of 2 ︰ 1 of draw ratio, diameter 2mm.
Embodiment 3
A kind of sealing material is mixed with by following parts by weight raw material: 110 parts of partial size is the coarse sand of 6mm, 9 parts The bagasse of swelled ground, 4 parts of 5 ︰ 1 of draw ratio, diameter 0.5mm.
Embodiment 4
A kind of sealing material is mixed with by following parts by weight raw material: 105 parts of partial size is the medium coarse sand of 5mm, 10 parts Swelled ground, 3 parts of 3 ︰ 1 of draw ratio, diameter 1.0mm wood sawdust.
Comparative example 1
A kind of sealing material is mixed with by following parts by weight raw material: 120 parts of partial size be 4.75mm medium coarse sand, The wood sawdust of 10 parts of swelled ground, 3.3 parts of 2 ︰ 1 of draw ratio, diameter 1.5mm.
Comparative example 2
A kind of sealing material is mixed with by following parts by weight raw material: 100 parts of partial size be 4.75mm medium coarse sand, The wood sawdust of 12 parts of swelled ground, 3.3 parts of 2 ︰ 1 of draw ratio, diameter 1.5mm.
Comparative example 3
A kind of sealing material is mixed with by following parts by weight raw material: 100 parts of partial size be 4.75mm medium coarse sand, The wood sawdust of 10 parts of swelled ground, 5 parts of 2 ︰ 1 of draw ratio, diameter 1.5mm.
Comparative example 4
A kind of sealing material is mixed with by following parts by weight raw material: 80 parts of partial size is the medium coarse sand of 4.75mm, 10 Part swelled ground, 3.3 parts of 2 ︰ 1 of draw ratio, diameter 1.5mm wood sawdust.
Comparative example 5
Existing cement slurry sealing material: 160 parts of cement, 280 parts of bentonite, 32 parts of swelling agent, 800 parts of water.
Comparative example 6
Existing rubber strip sealing material.
The sealing material that above-described embodiment 1-4 and comparative example 1-6 are prepared carries out sealing experiment (hole: internal diameter 0.3m × length 8m), record experimental result is as follows:
According to the above results: sealing material of the present invention has water-stagnating effect good, reprocesses and is easy after infiltration, and sealing is completed Afterwards, sealing material, which is removed, is easy, advantage low in cost;And in comparative example 1, the ratio of aggregate is more than the present invention in sealing material Regulation, the gap between aggregate cannot be inflated clay filling and bonding, water completely to overflow along gap, lead to sealing material Expect that water-stagnating effect significantly reduces;In comparative example 2, the ratio of expanded clay is more than regulation of the invention, sealing material in sealing material The strength reduction of material, water flow can wash away expanded clay, to gradually form infiltration inside sealing material, sealing material be caused to stop Water significant effect reduces;In comparative example 3, the ratio of reinforcing material is more than regulation of the invention in sealing material, leads to strengthening material Gap between material cannot be inflated clay filling completely, and water can gradually be permeated along reinforcing material, lead to sealing material sealing Significant effect reduces;In comparative example 4, the ratio of aggregate is lower than regulation of the invention in sealing material, and the intensity of sealing material drops Low, water flow can wash away expanded clay, to gradually form infiltration inside sealing material, cause sealing material water-stagnating effect significant It reduces;It is existing cement slurry sealing material, compared with sealing material of the present invention, water-stagnating effect is identical, but nothing in comparative example 5 Method processing infiltration, meanwhile, after the completion of sealing, remove difficult, higher cost;It is existing rubber strip sealing material in comparative example 5 Material, compared with sealing material of the present invention, water-stagnating effect is poor, at high cost.

Claims (9)

1. a kind of sealing material for steel pipe pile cofferdam lock, which is characterized in that including the preparation of following parts by weight raw material At: 90-110 parts of aggregate, 9-11 parts of expanded clay, 3-4 parts of reinforcing material.
2. sealing material according to claim 1, which is characterized in that the aggregate is the sandstone material of partial size 2-6mm.
3. sealing material according to claim 2, which is characterized in that the aggregate size is the medium coarse sand of 3-5mm.
4. sealing material according to claim 1, which is characterized in that the expanded clay is swell-shrink total ratio >=0.5% Clay material.
5. sealing material according to claim 4, which is characterized in that the expanded clay is bentonite, in swelled ground One or two.
6. sealing material according to claim 1, which is characterized in that the reinforcing material is draw ratio 2-5 ︰ 1, diameter The sponge of 0.5-2mm.
7. sealing material according to claim 6, which is characterized in that the sponge is sawmilling One of bits, bagasse, stalk are a variety of.
8. sealing material according to claim 1, which is characterized in that be prepared including following parts by weight raw material: 95- 105 parts of aggregate, 9-10 parts of expanded clay, 3-3.5 parts of reinforcing material.
9. sealing material according to claim 8, which is characterized in that be prepared including following parts by weight raw material: 100 Aggregate, 10 parts of the expanded clay, 3.3 parts of reinforcing material of part.
CN201811557753.7A 2018-12-19 2018-12-19 Water-stop material for steel pipe pile cofferdam lock catch Active CN109372031B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201811557753.7A CN109372031B (en) 2018-12-19 2018-12-19 Water-stop material for steel pipe pile cofferdam lock catch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201811557753.7A CN109372031B (en) 2018-12-19 2018-12-19 Water-stop material for steel pipe pile cofferdam lock catch

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CN109372031A true CN109372031A (en) 2019-02-22
CN109372031B CN109372031B (en) 2020-12-22

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111847997A (en) * 2020-06-23 2020-10-30 中国五冶集团有限公司 Water-stopping daub material for locking steel pipe pile cofferdam and water-stopping method

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101597904A (en) * 2009-07-03 2009-12-09 东南大学 A kind of splash guard pile cofferdam and job practices thereof
CN101781894A (en) * 2009-12-23 2010-07-21 中铁大桥局集团第一工程有限公司 Steel pipe pile locking notch structure and water-stopping method of steel pipe pile cofferdam
KR20120066432A (en) * 2010-12-14 2012-06-22 쌍용건설 주식회사 Sealing structure of walled steel pipe pile and sealing method thereof
CN203034467U (en) * 2012-10-31 2013-07-03 东南大学 Combined steel pile cofferdam with water-proof fore shafts
CN108625362A (en) * 2018-06-04 2018-10-09 华东交通大学 A kind of bayonet type cast-in-situ bored pile building enclosure and construction method

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101597904A (en) * 2009-07-03 2009-12-09 东南大学 A kind of splash guard pile cofferdam and job practices thereof
CN101781894A (en) * 2009-12-23 2010-07-21 中铁大桥局集团第一工程有限公司 Steel pipe pile locking notch structure and water-stopping method of steel pipe pile cofferdam
KR20120066432A (en) * 2010-12-14 2012-06-22 쌍용건설 주식회사 Sealing structure of walled steel pipe pile and sealing method thereof
CN203034467U (en) * 2012-10-31 2013-07-03 东南大学 Combined steel pile cofferdam with water-proof fore shafts
CN108625362A (en) * 2018-06-04 2018-10-09 华东交通大学 A kind of bayonet type cast-in-situ bored pile building enclosure and construction method

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
张建良等: "一井18层地下水监测井建设中的关键技术问题", 《西部探矿工程》 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111847997A (en) * 2020-06-23 2020-10-30 中国五冶集团有限公司 Water-stopping daub material for locking steel pipe pile cofferdam and water-stopping method

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