CN101024934A - Construction method for railway and road foundation - Google Patents

Construction method for railway and road foundation Download PDF

Info

Publication number
CN101024934A
CN101024934A CN 200710056874 CN200710056874A CN101024934A CN 101024934 A CN101024934 A CN 101024934A CN 200710056874 CN200710056874 CN 200710056874 CN 200710056874 A CN200710056874 A CN 200710056874A CN 101024934 A CN101024934 A CN 101024934A
Authority
CN
China
Prior art keywords
calcium
mud
alta
enriched
airing
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.)
Pending
Application number
CN 200710056874
Other languages
Chinese (zh)
Inventor
任玉华
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.)
BAOTAI CONSTRUCTION Co Ltd TIANJIN
Original Assignee
BAOTAI CONSTRUCTION Co Ltd TIANJIN
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.)
Filing date
Publication date
Application filed by BAOTAI CONSTRUCTION Co Ltd TIANJIN filed Critical BAOTAI CONSTRUCTION Co Ltd TIANJIN
Priority to CN 200710056874 priority Critical patent/CN101024934A/en
Publication of CN101024934A publication Critical patent/CN101024934A/en
Pending legal-status Critical Current

Links

Landscapes

  • Treatment Of Sludge (AREA)

Abstract

The invention belongs to a constructing method for railway and road bed processing, characterized in that: it comprises the concrete steps of: cleaning road surface; uniformly mixing calcium-added bentonite in the excavated wet mud and laying the calcium-added bentonite, where the utilization in volumetric percent: when the water ratio of the foundation soil is 30% and the bearing capacity of the finished product is 12ton/m2, the ratio of calcium-added bentonite to soil = 0.5:1; when the bearing capacity is invariant and the water ratio is reduced by 5%, the utilization of calcium-added bentonite is reduced by 10% and otherwise increased by 20%; mixing and airing; rolling; leveling and rolling. And its beneficial effects: it can quickly solidify the high-water content and fine-grained soil; it can quickly construct soft road beds; it can improve the bearing capacity of the finished road bed; it can slow down road bed settlement.

Description

Be used for the job practices that railway and highway subgrade are handled
Technical field
The invention belongs to the method that soft foundation is handled, relate in particular to a kind of job practices that is used for railway and highway subgrade processing.
Background technology
The bearing capacity lower (having only 6 tons/square metre usually) of (land) ground owing to reclaim fields from the sea, water content is bigger.The bearing capacity that the sea level, Bohai Sea Gulf reduces the land that forms is also lower, and soil property is pine, and water content is also bigger.Improving the soft foundation bearing capacity and slow down foundation settlement, is the construction Difficulties that coastal railway and highway subgrade are handled.It is the method for mud agitation pile of fetching water that the weak roadbed of existing railway is handled job practices, and the cost of this method is higher, and every square metre reaches 1500 yuan, and roadbed maintenance cost is also than higher.The method that existing highway soft foundation is handled is that the construction cost of this method and maintenance cost are all very high with pseudo-ginseng ash compacting.
Summary of the invention
The objective of the invention is to overcome the deficiency of above-mentioned job practices and technology, and a kind of job practices that is used for railway and highway subgrade processing is provided, reach and reduce construction and maintenance cost and improve bearing capacity and the purpose of slowing down sedimentation.
The present invention for achieving the above object, by the following technical solutions: a kind ofly be used for the job practices that railway and highway subgrade are handled, it is characterized in that:
Concrete construction sequence is:
1, levels the route surface: level with bulldozer, in the scope of width technical requirements, reach plane effect;
2, shop calcium-enriched alta-mud: with transport vehicle and the excavator calcium-enriched alta-mud that evenly paves on route, mix calcium-enriched alta-mud thoroughly in the wet mud that digs out, the consumption percent by volume is: when the moisture content of ground soil is 30%, and 12 tons/meter of requirement for bearing capacity of finished product 2The time, the ratio of calcium-enriched alta-mud and soil is 0.5: 1; When requirement for bearing capacity is constant, the every reduction by 5% of soil moisture content, the use amount of calcium-enriched alta-mud reduces by 10%, the every increase by 5% of soil moisture content, the use amount of calcium-enriched alta-mud increases by 20%;
3, mix airing: along route ground is slotted with excavator, wet mud is dug out in the depth index requirement and calcium-enriched alta-mud is mixed thoroughly together by handling, and is deposited in airing beyond the route sideline, whenever turn over one time, airing 3-5 days, reach the numerical value of standard-required until water content, simultaneously, the bottom of airing groove;
4, roll: good compound is inserted the roadbed to get airing with excavator from the airing mound, successively rolls 0.4 meter-0.5 meter of the thickness of every rolling layers with 18 tons of road rollers that shake.Successively measure compactness;
5, reinforce: when being lower than 0.7 meter of absolute altitude, the brick dregs is inserted roadbed, the thickness of brick dregs is 0.5 meter, rolls with 18 tons of road rollers that shake, and inserts compound more thereon and rolls, up to reaching the absolute altitude requirement again;
6, smooth: as after roadbed reaches design altitude, to carry out smooth rolling again to meeting technical requirements;
7, finished product protection: at finished product the gutter is set along the line, prevents the ponding that rains, the protection finished product;
8, check: test by checking and accepting technical requirements,, measure the bearing capacity of foundation soil after tedding for example by plate.
Beneficial effect of the present invention: this method has been determined the proportionate relationship when the moisture content of subgrade soil and requirement for bearing capacity of finished product one timing calcium-enriched alta-mud and wet mud; The thickness of rolling layers; Effective construction machinery and engineering time and a whole set of ted the program of construction.Can make the soil quick-hardening that water content is big, particle is thin, reduce roadbed treatment project cost; Can make weak roadbed rapid construction, shorten the construction period; Can make the fine soil particle in the finished product ground obtain gluing, improve the bearing capacity of finished product ground; Can make subgrade soil have water imbibition, water retention, stretch-draw active force, play suction, water conservation, resistance and returned the effect of water and selfreparing, and then reached the purpose of slowing down subgrade settlement because of forming special colloid.
The specific embodiment
Describe the specific embodiment of the present invention in detail below in conjunction with preferable case study on implementation.
A kind of job practices that is used for railway and highway subgrade processing, concrete construction sequence is:
1, levels the route surface: remove the foreign material on route surface with bulldozer, make it to reach smooth;
2, shop calcium-enriched alta-mud: with transport vehicle and the excavator calcium-enriched alta-mud that on route, evenly paves, the consumption of shop calcium-enriched alta-mud is: according to the moisture content height of soil and the requirement of bearing capacity of finished product, determine the consumption of calcium-enriched alta-mud, generally, when the moisture content of ground soil is about 30%, 12 tons/meter of requirement for bearing capacity of finished product 2The time, calcium-enriched alta-mud (cubic meter) is 0.5: 1 with the ratio of soil (cubic meter).When requirement for bearing capacity was constant, when the moisture content of soil is the boundary with 30%, during every reduction by 5%, the use amount of calcium-enriched alta-mud reduced by 10%, when the moisture content of soil is higher than 30%, and every increase by 5%, the use amount of calcium-enriched alta-mud increases by 20%;
3, mix airing: along route ground is slotted with excavator, wet mud is dug out in the depth index requirement and calcium-enriched alta-mud is mixed thoroughly together by handling, be deposited in airing beyond the route sideline, whenever turn over airing 3 days to 5 days one time, reach the numerical value of standard-required until water content, simultaneously, the bottom of airing groove;
4, roll: good compound is inserted the roadbed to get airing with excavator from the airing mound, successively rolls 0.4 meter to 0.5 meter of the thickness of every rolling layers with 18 tons of road rollers that shake.Successively measure compactness;
5, reinforce: when being lower than 0.7 meter of absolute altitude, the brick dregs is inserted roadbed, the thickness of brick dregs is 0.5 meter, rolls with 18 tons of road rollers that shake, and inserts compound more thereon and rolls, up to reaching the absolute altitude requirement again;
6, smooth: as after roadbed reaches design altitude, to carry out smooth rolling again to meeting technical requirements;
7, finished product protection: at finished product the gutter is set along the line, prevents the ponding that rains, the protection finished product;
8, check: test by checking and accepting technical requirements,, measure the bearing capacity of foundation soil after tedding for example by plate.
Instantiation: application site is that Harbor, Tianjin industrial occupancy Tianjin Caustic Soda Plant special purpose railroad roadbed is handled (23 bid section) engineering.Unit in charge of construction is Baotai Construction Co., Ltd., Tianjin, and the check unit is a ground foundation Engineering Co., Ltd of Tianjin section, and inspection unit is Construction Development Co. Ltd., Tianjin Lingang Industrial Zone.
This method has been determined the proportionate relationship when the moisture content of subgrade soil and requirement for bearing capacity of finished product one timing calcium-enriched alta-mud and wet mud; The thickness of rolling layers; Effective construction machinery and engineering time and a whole set of ted the program of construction.Can make the soil quick-hardening that water content is big, particle is thin, reduce roadbed treatment project cost; Can make weak roadbed rapid construction, shorten the construction period; Can make the fine soil particle in the finished product ground obtain gluing, improve the bearing capacity of finished product ground; Can make subgrade soil have water imbibition, water retention, stretch-draw active force, play suction, water conservation, resistance and returned the effect of water and selfreparing, and then reached the purpose of slowing down subgrade settlement because of forming special colloid.
The above only is a preferable case study on implementation of the present invention, is not that structure of the present invention is done any pro forma restriction.Every foundation technical spirit of the present invention all still belongs to the scope of technical scheme of the present invention to any simple modification, equivalent variations and modification that above embodiment did.

Claims (1)

1, a kind of job practices that is used for railway and highway subgrade processing, it is characterized in that: concrete construction sequence is:
(1), levels the route surface;
(2), the shop calcium-enriched alta-mud: with transport vehicle and the excavator calcium-enriched alta-mud that evenly paves on route, mix calcium-enriched alta-mud thoroughly in the wet mud that digs out, the consumption percent by volume is: when the moisture content of ground soil is 30%, 12 tons/meter of requirement for bearing capacity of finished product 2The time, calcium-enriched alta-mud: soil=0.5: 1; When requirement for bearing capacity was constant, during the every reduction by 5% of soil moisture content, the use amount of calcium-enriched alta-mud reduced by 10%, the every increase by 5% of soil moisture content, and the use amount of calcium-enriched alta-mud increases by 20%;
(3), mix airing: along route ground is slotted with excavator, dig out wet mud and calcium-enriched alta-mud and mix thoroughly together, be deposited in airing beyond the route sideline, whenever turn over a time, airing 3-5 days, reach the numerical value of standard-required, the bottom of the groove of airing simultaneously until water content;
(4), roll: good compound is inserted the roadbed to get airing with excavator from the airing mound, successively rolls with road roller, and 0.4 meter-0.5 meter of the thickness of rolling layers is also successively measured compactness;
(5), again reinforce: when being lower than 0.7 meter of absolute altitude, the brick dregs is inserted roadbed, the thickness of brick dregs is 0.5 meter, and steamroller is inserted compound more thereon and rolled;
(6), smooth, roll to meeting technical requirements;
(7), finished product protection: the gutter is set along the line at finished product;
(8), check.
CN 200710056874 2007-03-06 2007-03-06 Construction method for railway and road foundation Pending CN101024934A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 200710056874 CN101024934A (en) 2007-03-06 2007-03-06 Construction method for railway and road foundation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 200710056874 CN101024934A (en) 2007-03-06 2007-03-06 Construction method for railway and road foundation

Publications (1)

Publication Number Publication Date
CN101024934A true CN101024934A (en) 2007-08-29

Family

ID=38743551

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 200710056874 Pending CN101024934A (en) 2007-03-06 2007-03-06 Construction method for railway and road foundation

Country Status (1)

Country Link
CN (1) CN101024934A (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102116007A (en) * 2011-03-02 2011-07-06 江苏省淮安市公路管理处 Isolation waterproof filling method for treating surface layer of highway foundation
CN102127890A (en) * 2011-03-31 2011-07-20 湖南恒盾岩土工程注浆科技有限公司 Reinforcing construction method of existing railway subgrade
CN102828453A (en) * 2012-09-17 2012-12-19 武卫国 Stamping reinforcement method of weak rolling area of roadbed and application thereof
CN102900001A (en) * 2012-10-22 2013-01-30 中国水电建设集团路桥工程有限公司 Construction method for road foundation
CN103031792A (en) * 2013-01-05 2013-04-10 北京航空航天大学 Method and device for lifting roadbed settlement of existing road
CN109137692A (en) * 2017-06-13 2019-01-04 新疆北方建设集团有限公司 A kind of gobi roadbed salt marsh chemical treatment construction
CN109706810A (en) * 2018-11-29 2019-05-03 华东交通大学 A kind of highway bed construction method that swelled ground fills
CN111676749A (en) * 2020-06-03 2020-09-18 安徽华仁路桥工程有限公司 Construction method for roadbed earthwork in rainy season
CN111823387A (en) * 2020-07-17 2020-10-27 深圳市建安(集团)股份有限公司 A kind of residual mud and slag modification device and method
CN112176804A (en) * 2020-10-12 2021-01-05 东南大学 Anti-settlement water retention roadbed structure in water-rich soft soil area and design method
CN113322720A (en) * 2021-05-18 2021-08-31 中铁二院工程集团有限责任公司 Roadbed structure suitable for heavy haul railway in south Asia region

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102116007A (en) * 2011-03-02 2011-07-06 江苏省淮安市公路管理处 Isolation waterproof filling method for treating surface layer of highway foundation
CN102116007B (en) * 2011-03-02 2012-05-30 江苏省淮安市公路管理处 Isolation Waterproof Filling Method for Highway Foundation Surface Treatment
CN102127890A (en) * 2011-03-31 2011-07-20 湖南恒盾岩土工程注浆科技有限公司 Reinforcing construction method of existing railway subgrade
CN102828453A (en) * 2012-09-17 2012-12-19 武卫国 Stamping reinforcement method of weak rolling area of roadbed and application thereof
CN102900001A (en) * 2012-10-22 2013-01-30 中国水电建设集团路桥工程有限公司 Construction method for road foundation
CN102900001B (en) * 2012-10-22 2015-04-29 中国水电建设集团路桥工程有限公司 Construction method for road foundation
CN103031792A (en) * 2013-01-05 2013-04-10 北京航空航天大学 Method and device for lifting roadbed settlement of existing road
CN103031792B (en) * 2013-01-05 2015-09-02 北京航空航天大学 The method of the existing highway subgrade sedimentation of a kind of lifting and device thereof
CN109137692A (en) * 2017-06-13 2019-01-04 新疆北方建设集团有限公司 A kind of gobi roadbed salt marsh chemical treatment construction
CN109706810A (en) * 2018-11-29 2019-05-03 华东交通大学 A kind of highway bed construction method that swelled ground fills
CN109706810B (en) * 2018-11-29 2023-03-24 华东交通大学 Construction method of highway subgrade filled with expansive soil
CN111676749A (en) * 2020-06-03 2020-09-18 安徽华仁路桥工程有限公司 Construction method for roadbed earthwork in rainy season
CN111676749B (en) * 2020-06-03 2021-10-01 安徽华仁路桥工程有限公司 Roadbed earthwork construction structure in rainy season
CN111823387A (en) * 2020-07-17 2020-10-27 深圳市建安(集团)股份有限公司 A kind of residual mud and slag modification device and method
CN112176804A (en) * 2020-10-12 2021-01-05 东南大学 Anti-settlement water retention roadbed structure in water-rich soft soil area and design method
CN112176804B (en) * 2020-10-12 2022-03-01 东南大学 Anti-settlement water retention roadbed structure in water-rich soft soil area and design method
CN113322720A (en) * 2021-05-18 2021-08-31 中铁二院工程集团有限责任公司 Roadbed structure suitable for heavy haul railway in south Asia region

Similar Documents

Publication Publication Date Title
CN101024934A (en) Construction method for railway and road foundation
CN107059573B (en) Construction method for solidifying soil body as road water stabilization layer
CN106836186A (en) A kind of construction technology of utilizing solidified earth from sludge
CN105152519B (en) A kind of inorganic sludge curing agent, road-making material and preparation method thereof
CN109914178B (en) Construction method for integrally paving road by using bio-enzyme curing material
CN101545234A (en) Method for constructing roadbed and base course by construction waste
CN100439600C (en) Treatment method of newly built high way railway engineering soft foundation
CN109853310A (en) A kind of dredging silt industrial residue composite curing light soil and roadbed placement in layers construction method
CN107419630A (en) A kind of the soft soil foundation high-filled embankment and construction method of effectively control settlement after construction
CN106116395A (en) A kind of inorganic colloid methoder as road subbase course filler and compound method thereof
CN113699971A (en) Soft soil stratum in-situ curing agent preparation feeding equipment and curing process thereof
CN108677638A (en) Express highway roadbed dam filling construction based on building waste
CN111041916A (en) Roadbed construction method by solidifying earthwork
CN107152012A (en) Sluice construction technique
CN207362616U (en) Permeable brick paving structure
CN105862535B (en) A kind of construction method of barged-in fill curing stake roadbed
CN105369721A (en) Cement-stabilized coral reef sand construction process
CN107401158A (en) A kind of processing method for Coarse Saline ground
CN112523021A (en) Cement soil roadbed cushion for highway engineering and construction process and detection method thereof
CN103243624B (en) Construction method for salty soil district railway roadbed with water content lower than liquid limit
CN112813756A (en) Roadbed based on municipal soft soil and construction method
CN103147378B (en) Road lime soil foundation stone bucket determines ridge code side road mix construction method
CN106836182A (en) A kind of compacted technique of vibroflotation water conservancy diversion
CN114606819A (en) High-fill structure adopting lime soil to half wrap expansive soil and construction method thereof
CN103130455A (en) Red mud concrete and production method thereof

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C02 Deemed withdrawal of patent application after publication (patent law 2001)
WD01 Invention patent application deemed withdrawn after publication