CN107869138A - High roadbed building stones Change and fill groundsill handles construction method - Google Patents
High roadbed building stones Change and fill groundsill handles construction method Download PDFInfo
- Publication number
- CN107869138A CN107869138A CN201711218893.7A CN201711218893A CN107869138A CN 107869138 A CN107869138 A CN 107869138A CN 201711218893 A CN201711218893 A CN 201711218893A CN 107869138 A CN107869138 A CN 107869138A
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- China
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- bed course
- geotextiles
- fill
- building stones
- tamping point
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Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/02—Improving by compacting
- E02D3/046—Improving by compacting by tamping or vibrating, e.g. with auxiliary watering of the soil
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/02—Improving by compacting
- E02D3/10—Improving by compacting by watering, draining, de-aerating or blasting, e.g. by installing sand or wick drains
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Structural Engineering (AREA)
- Agronomy & Crop Science (AREA)
- Environmental & Geological Engineering (AREA)
- Soil Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The present invention relates to a kind of high roadbed building stones Change and fill groundsill to handle construction method, and it comprises the following steps：1. clear up surface of base；2. backfill bed course：Building stones are carried out in surface of base to backfill to form bed course；3. bed course strong rammer：The position of first pass tamping point and second time tamping point is marked out on bed course, is rammed respectively；4. bed course completely rams；5. excavate french drain；6. lay geotextiles：Manually geotextiles are spread in french drain, and fixed；7. fill 30 50mm Stone layers：30 50mm Stone layers are filled in geotextiles, and are wrapped up with geotextiles；8. loaded filter is set：5 20mm Stones layers and 2 5mm particle diameters layers of sand are set to carry out anti-filter in geotextiles successively from top to bottom.The present invention changes to fill out to solve in primitive groove groove by building stones causes high roadbed phenomena such as filling body differential settlement causes cracking, slope deforming occur in constructing because of the uneven stress of mud；By strong rammer filling body, backfill building stones compactness is added, prevents overproof sedimentation and differential settlement.
Description
Technical field
The present invention relates to high roadbed processing technology field, and in particular to a kind of high roadbed building stones Change and fill groundsill handles construction party
Method.
Background technology
High roadbed is to reach required structures by layered rolling backfill to set than what physical features around was substantially higher by
Count arrangement and method for construction.Such as：Modern carrier express highway roadbed, airport is as aviation industry etc..
Carrier of the airport as aviation industry, just with national economy develop rapidly and society general advance and it is swift and violent
Development.At present, China just has tens building with proposed airport, there is nearly 10 if only Hubei Province.These airports are common
Feature is that requirement is high, building time is short, planned investment is few.These airport constructions substantial amounts of ploughed to save and meet headroom
It is required that build in deserted mountain barren hill area more.Alpine terrain landforms are complicated, and the evaluation of the earthwork certainly will be involved in airport construction,
The basic condition on some mountain area high roadbed airports of China.Each airport geological conditions is different, and filler is different, how to take and suitably fills out
Building method, filling material, observation procedure etc., it is that each airport must solve the problems, such as.How to handle well big in airport construction
Area, high roadbed, loose and uneven landfill place, the requirement for meeting airport construction base stabilization, deformation, intensity is allowed to,
The problem of this is in the urgent need to address in Airport in Mountain Region " Fill valley of cutting into a mountain " place basement process.But also bottom of trench desilting hardly possible be present
Shortcoming：The earth's surface desilting of the weeper drain engineering of this test section is a key of engineering, and desilting is not in place, can cause to backfill layer
Gap be present between the table of original place, greatly harm is produced to overall backfill region.
The content of the invention
For above-mentioned technical problem, it is an object of the invention to provide a kind of high roadbed building stones Change and fill groundsill to handle construction party
Method, the present invention pass through（Side slope area, Tu Mianqu, Dao Cao area and terminal area groove）Building stones, which change to fill out, solves primitive groove groove internal cause mud
Uneven stress and cause high roadbed construct in occur filling body differential settlement cause cracking, slope deforming phenomena such as；Pass through
Strong rammer filling body, backfill building stones compactness is added, prevents overproof sedimentation and differential settlement；By setting by sand, stone layer
With the french drain of geotextiles composition, solves the problems, such as the discharge of former massif water system.
To achieve the above object, the technical solution used in the present invention is：
A kind of high roadbed building stones Change and fill groundsill handles construction method, it is characterised in that it comprises the following steps：
1. clear up surface of base：Surface of base debris and mud are removed, discharges ponding, and preliminary flattened faces；
2. backfill bed course：Building stones are carried out in surface of base to backfill to form bed course, and smooth mat surface；
3. bed course strong rammer：The position of first pass tamping point and second time tamping point is marked out on bed course, is rammed respectively；
A, first pass tamping point position is marked out on bed course；
B, rammed by the ramming times and control standard, first tamping point of completion of design requirement；
C, change tamping point to continue to ram, until the tamping point of all marks all rams completion；
D, tamping pit is filled and led up with bull-dozer, then second time tamping point position is marked out on bed course；
E, after defined interval time, the whole that second time tamping point is completed by above-mentioned steps b and c is rammed；
4. bed course completely rams：Tamping pit is filled and led up with bull-dozer, whole bed course completely rammed one time, and ensures that ramming back pad layer elevation is
1.5m；
5. excavate french drain：After french drain excavation reaches projected depth, bottom of trench soil matrix coordinates digging machine to pat pressing using frog hammer
Tamped；
The wide 2.45m in french drain top, the wide 1.7m in bottom, high 1.5m, the both sides gradient 1:0.25.
6. lay geotextiles：Manually geotextiles are spread in french drain, and fixed；
The geotextiles are 300g/m2Non-woven geotextile.
When laying geotextiles, the 30cm laps of splice are stayed between adjacent geotextiles.
7. fill 30-50mm Stone layers：30-50mm Stone layers are filled in geotextiles, and use geotextiles
Wrapped up；
When filling the construction of 30-50mm Stones layer：First by manually in 30-50mm Stones thick bottom of trench making about 30cm simultaneously
It is thick flat, then remaining 30-50mm Stones are inserted in ditch by small sized loader and form 30-50mm Stone layers.
8. loaded filter is set：5-20mm Stones layer and 2-5mm particle diameter sand are set in geotextiles successively from top to bottom
Layer carries out anti-filter.
The first pass tamping point is evenly arranged on bed course in length and breadth, and spacing is 4.5m in length and breadth for it；Second time tamping point
It is evenly arranged in length and breadth on bed course, spacing is 4.5m in length and breadth for it；The first pass tamping point is interspersed with second time tamping point.
The beneficial effects of the invention are as follows：The present invention passes through（Side slope area, Tu Mianqu, Dao Cao area and terminal area groove）Building stones change
Fill out to solve and cause in primitive groove groove high roadbed filling body differential settlement occur in constructing because of the uneven stress of mud to cause
Phenomena such as cracking, slope deforming, improve the overall resistance to compression of high roadbed and shearing strength；By strong rammer filling body, add back
Plastic of Rockfill compactness, prevent overproof sedimentation and differential settlement；By setting the french drain being made up of sand, stone layer and geotextiles,
The internal drainage channel of high roadbed body is constituted, is effectively solved because high roadbed compacting and former massif water system draining are asked
Topic.Building stones strong rammer, which is changed, to be dosed the foundation treatment construction method of french drain and significantly improves the overall resistance to compression of high roadbed and shearing strength,
And can effectively discharges the current of former massif while reducing relative settlement.
Brief description of the drawings
Fig. 1 is that strong rammer tamping point arranges schematic diagram（Include first pass tamping point and second time tamping point）.
Fig. 2 is Fig. 1 A-A to schematic cross-section.
Fig. 3 is french drain sectional drawing schematic diagram.
Brief description of the drawings：1st, first pass tamping point；2nd, second time tamping point；3rd, bed course；4th, geotextiles；5th, 30-50mm Stones
Layer；6th, 5-20mm Stones layer；7th, 2-5mm particle diameters layer of sand.
Embodiment
For a better understanding of the present invention, technical scheme is done further with reference to embodiment and accompanying drawing
Explanation（As Figure 1-3）.
A kind of high roadbed building stones Change and fill groundsill handles construction method, it is characterised in that it comprises the following steps：
1. clear up surface of base：Surface of base debris and mud are removed, discharges ponding, and preliminary flattened faces；
2. backfill bed course：Building stones are carried out in surface of base to backfill to form bed course 3, and the surface of smooth bed course 3；
3. bed course strong rammer：The position of first pass tamping point 1 and second time tamping point 2 is marked out on bed course 3, is rammed respectively；
A, the position of first pass tamping point 1 is marked out on bed course 3（And measure place elevation）；
B, by the ramming times and control standard of design requirement（Energy level）, complete ramming for first tamping point 1（Ram process：
Crane is in place, and hammer ram is placed in tamping point position；Peen elevation before measurement is rammed；Hammer ram is lifted to predetermined by energy level as requested
Highly, tripping gear is opened, after rammer unhooking free-falling, suspension hook is put down, measures peen elevation；If it was found that because cheating slanted floor
And when causing hammer ram crooked, should be in time by the leveling of hole bottom）；
C, change tamping point to continue to ram, until the tamping point of all marks all rams completion；
D, tamping pit is filled and led up with bull-dozer, then second time position of tamping point 2 is marked out on bed course 3（And measure place elevation）；
E, after defined interval time, the whole that second time tamping point 2 is completed by above-mentioned steps b and c is rammed；
4. bed course completely rams：Tamping pit is filled and led up with bull-dozer, whole bed course 3 is completely rammed one time（Place soil working is tamped）, and
Ensure that it is 1.5m to ram the elevation of back pad layer 3；
5. excavate french drain：After french drain excavation reaches projected depth, bottom of trench soil matrix coordinates digging machine to pat pressing using frog hammer
Tamped；
The wide 2.45m in french drain top, the wide 1.7m in bottom, high 1.5m, the both sides gradient 1:0.25.
6. lay geotextiles：Manually geotextiles 4 are spread in french drain（When laying geotextiles certain soil is left on groove face
The crimping of work cloth 4, to wrap up crushed rock filler）, and fixed（For preventing rock filling time shift from moving geotextiles 4；And in soil
After work cloth 4 is constructed, to strengthen finished product protection）；
The geotextiles 4 are 300g/m2Non-woven geotextile.
When laying geotextiles 4, the 30cm laps of splice are stayed between adjacent geotextiles 4（To ensure filter effect）.
7. fill 30-50mm Stone layers：30-50mm Stones layer 5 is filled in geotextiles, and uses geotextiles
4 are wrapped up；
When filling the construction of 30-50mm Stones layer：First by manually in 30-50mm Stones thick bottom of trench making about 30cm simultaneously
It is thick flat, then remaining 30-50mm Stones are inserted in ditch by small sized loader and form 30-50mm Stones layer 5（Purpose
It is when preventing that loading machine from toppling over rubble, geotextiles 4 is cut due to gravity）.
8. loaded filter is set：5-20mm Stones layer 6 and 2-5mm particle diameter sand are set in geotextiles successively from top to bottom
Layer 7 carries out anti-filter.
The first pass tamping point 1 is evenly arranged on bed course 3 in length and breadth, and spacing is 4.5m in length and breadth for it；Second time rammer
Point 2 is evenly arranged on bed course 3 in length and breadth, and spacing is 4.5m in length and breadth for it；The first pass tamping point 1 interlocks with second time tamping point 2
Distribution（The lines in length and breadth of i.e. all first pass tamping points 1 forms a palace lattice layout, then each second time tamping point 2 is all located at pair
The side's of answering center of a lattice）.
The right model described above for being only the Application Example of the present invention, the present invention can not being limited with this certainly
Enclose, therefore the equivalence changes made according to scope of the present invention patent, still belong to protection scope of the present invention.
Claims (6)
1. a kind of high roadbed building stones Change and fill groundsill handles construction method, it is characterised in that it comprises the following steps：
1. clear up surface of base：Surface of base debris and mud are removed, discharges ponding, and preliminary flattened faces；
2. backfill bed course：Building stones are carried out in surface of base to backfill to form bed course, and smooth mat surface；
3. bed course strong rammer：The position of first pass tamping point and second time tamping point is marked out on bed course, is rammed respectively；
4. bed course completely rams：Tamping pit is filled and led up with bull-dozer, whole bed course completely rammed one time, and ensures that ramming back pad layer elevation is
1.5m；
5. excavate french drain：After french drain excavation reaches projected depth, bottom of trench soil matrix coordinates digging machine to pat pressing using frog hammer
Tamped；
6. lay geotextiles：Manually geotextiles are spread in french drain, and fixed；
7. fill 30-50mm Stone layers：In geotextiles fill 30-50mm Stone layers, and with geotextiles by its
Parcel；
8. loaded filter is set：5-20mm Stones layer and 2-5mm particle diameter layers of sand is set to enter in geotextiles successively from top to bottom
Row anti-filter.
2. high roadbed building stones Change and fill groundsill according to claim 1 handles construction method, it is characterised in that：Step 3. middle institute
State first pass tamping point to be evenly arranged on bed course in length and breadth, spacing is 4.5m in length and breadth for it；Second time tamping point is evenly arranged in length and breadth
On bed course, spacing is 4.5m in length and breadth for it；The first pass tamping point is interspersed with second time tamping point.
3. high roadbed building stones Change and fill groundsill according to claim 1 handles construction method, it is characterised in that：The step is 3.
Bed course strong rammer：
A, first pass tamping point position is marked out on bed course；
B, rammed by the ramming times and control standard, first tamping point of completion of design requirement；
C, change tamping point to continue to ram, until the tamping point of all marks all rams completion；
D, tamping pit is filled and led up with bull-dozer, then second time tamping point position is marked out on bed course；
E, after defined interval time, the whole that second time tamping point is completed by above-mentioned steps b and c is rammed；
High roadbed building stones Change and fill groundsill according to claim 1 handles construction method, it is characterised in that：7. the step is filled
Fill out 30-50mm Stone layers：When filling the construction of 30-50mm Stones layer：First by manually in bottom of trench making about 30cm thickness
30-50mm Stones are simultaneously slightly put down, then insert remaining 30-50mm Stones by small sized loader and 30- is formed in ditch
50mm Stone layers.
4. high roadbed building stones Change and fill groundsill according to claim 1 handles construction method, it is characterised in that：Step 5. middle institute
State the wide 2.45m in french drain top, the wide 1.7m in bottom, high 1.5m, the both sides gradient 1:0.25.
5. high roadbed building stones Change and fill groundsill according to claim 1 handles construction method, it is characterised in that：Step 6. in
When laying geotextiles, the 30cm laps of splice are stayed between adjacent geotextiles.
6. high roadbed building stones Change and fill groundsill according to claim 1 handles construction method, it is characterised in that：The geotextiles
For 300g/m2Non-woven geotextile.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711218893.7A CN107869138A (en) | 2017-11-28 | 2017-11-28 | High roadbed building stones Change and fill groundsill handles construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711218893.7A CN107869138A (en) | 2017-11-28 | 2017-11-28 | High roadbed building stones Change and fill groundsill handles construction method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107869138A true CN107869138A (en) | 2018-04-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711218893.7A Pending CN107869138A (en) | 2017-11-28 | 2017-11-28 | High roadbed building stones Change and fill groundsill handles construction method |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109024539A (en) * | 2018-07-27 | 2018-12-18 | 武汉冶建筑安装工程有限责任公司 | Rainy band airport cliff of displacement area high roadbed construction method |
| CN111691392A (en) * | 2020-06-28 | 2020-09-22 | 中建八局第四建设有限公司 | Backfill construction method for sludge texture foundation |
| CN113445395A (en) * | 2021-05-20 | 2021-09-28 | 中铁三局集团广东建设工程有限公司 | Construction method for improving strength of high liquid limit soil roadbed |
| CN114032926A (en) * | 2021-11-25 | 2022-02-11 | 武汉一冶建筑安装工程有限责任公司 | Underwater backfill method |
| CN114411467A (en) * | 2022-03-31 | 2022-04-29 | 山西机械化建设集团有限公司 | Construction method of high-liquid limit soil filler high-fill skeleton stress and drainage system |
| CN118390345A (en) * | 2024-06-25 | 2024-07-26 | 中铁五局集团第一工程有限责任公司 | Processing method for improving bearing capacity of roadbed substrate |
-
2017
- 2017-11-28 CN CN201711218893.7A patent/CN107869138A/en active Pending
Non-Patent Citations (3)
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| 刘莉等: "《工程技术经济分析与估价》", 31 July 2016, 中国电力出版社 * |
| 北京市建筑工程总公司编: "《建筑工法与实例》", 30 September 1992, 中国建筑工业出版社 * |
| 李锋瑞: ""超高填方地基分层回填强夯加固关键技术"", 《施工技术》 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109024539A (en) * | 2018-07-27 | 2018-12-18 | 武汉冶建筑安装工程有限责任公司 | Rainy band airport cliff of displacement area high roadbed construction method |
| CN111691392A (en) * | 2020-06-28 | 2020-09-22 | 中建八局第四建设有限公司 | Backfill construction method for sludge texture foundation |
| CN111691392B (en) * | 2020-06-28 | 2021-07-23 | 中建八局第四建设有限公司 | Backfill construction method for sludge texture foundation |
| CN113445395A (en) * | 2021-05-20 | 2021-09-28 | 中铁三局集团广东建设工程有限公司 | Construction method for improving strength of high liquid limit soil roadbed |
| CN114032926A (en) * | 2021-11-25 | 2022-02-11 | 武汉一冶建筑安装工程有限责任公司 | Underwater backfill method |
| CN114411467A (en) * | 2022-03-31 | 2022-04-29 | 山西机械化建设集团有限公司 | Construction method of high-liquid limit soil filler high-fill skeleton stress and drainage system |
| CN118390345A (en) * | 2024-06-25 | 2024-07-26 | 中铁五局集团第一工程有限责任公司 | Processing method for improving bearing capacity of roadbed substrate |
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Application publication date: 20180403 |