CN103590424B - The underground engineering construction method of road - Google Patents
The underground engineering construction method of road Download PDFInfo
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- CN103590424B CN103590424B CN201310632030.XA CN201310632030A CN103590424B CN 103590424 B CN103590424 B CN 103590424B CN 201310632030 A CN201310632030 A CN 201310632030A CN 103590424 B CN103590424 B CN 103590424B
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Abstract
The present invention discloses the underground engineering construction method of a kind of road, comprises the following steps: construction ground is divided into three sections by (1), is respectively A, B section of middle C section and both sides; (2) closing C section, to the construction of C section, the excavation top layer earthwork, does C section top board; (3) backfilling the C section earthwork, to the construction of A section, the excavation top layer earthwork, to base plate basic unit, does A section base plate; (4) A section wallboard is done; (5) A section top board is done; (6) backfilling the A section earthwork, to the construction of B section, the excavation top layer earthwork, to base plate basic unit, does B section and C section base plate; Do B section wallboard; Do B section top board; (7) the B section earthwork is backfilled.
Description
Technical field
The present invention relates to a kind of construction technology, it is specifically related to the underground engineering construction method of a kind of road.
Background technology
Domestic city development just day by day face: soil is in short supply, congested in traffic, environmental pollution, energy shortage, take precautions against natural calamities fragility etc. problem. City spatial colonization mode just turns to " solid " from " on the ground ", and more and more public works and civil engineering are selected to underground development, and the newly-built Large Underground Structure thing of One's name is legion. But the exploitation place of underground structure is often in the central position in city, road is closed the pressure of traffic is quite big in construction period, especially, when not having peripheral path can detour for vehicle, carry out road closed construction, the paralysis of Urban traffic function will be caused.
The common at present method of underground engineering construction mainly contains Open Cut Method or sheltered reverse excavation. Open Cut Method refers to after completing building enclosure, is excavated to substrate absolute altitude, base plate �� wallboard �� basement roof of then successively constructing from bottom to top. The defect of Open Cut Method: have safety supports to exist, excavates restricted; Traffic impact is big; Urban life interference is big; Surrounding environment is destroyed big. Open Cut Method is applicable to shallow excavation project, and the sheltered reverse excavation engineering time is longer, and difficulty of construction is bigger.
Summary of the invention
The object of the present invention is exactly the defect in order to make up prior art, it is provided that the underground engineering construction method of a kind of road, it is possible to solves engineering construction and is subject to excavating the restriction of the degree of depth, problem that a rate of advance is low.
In order to realize above-mentioned purpose, the present invention provides two kinds of constructional methods, its one:
A underground engineering construction method for road, comprises the following steps:
(1) construction ground is divided into three sections, it is respectively A, B section of middle C section and both sides;
(2) closing C section, to the construction of C section, the excavation top layer earthwork, does C section top board;
(3) backfilling the C section earthwork, to the construction of A section, the excavation top layer earthwork, to base plate basic unit, does A section base plate;
(4) A section wallboard is done;
(5) A section top board is done;
(6) backfilling the A section earthwork, to the construction of B section, the excavation top layer earthwork, to base plate basic unit, does B section and C section base plate; Do B section wallboard; Do B section top board;
(7) the B section earthwork is backfilled.
As further improvement, in step (2), after closing C section, before the excavation top layer earthwork, carrying out two row's pile foundation constructions, steel lattice column construction, C section top board and two row's steel lattice columns are connected to form a reinforced concrete bridge;
In step (3), after closing A section, carry out steel sheet pile or drilled pile construction, and do grit and form foundation pit enclosure structure, then pile foundation construction, makees horizontal steel pipe at interval of a segment distance and supports, connect together supporting the top board with C section, after earth excavation to base plate basic unit, the earthwork under C section top board is put slope process or local reinforcing;
Before step (6) backfills the A section earthwork, remove steel pipe support, do WATER REPELLENT; In the lump the C section earthwork is excavated when excavating the B section earthwork.
As further improvement, it is 0.67 that the earthwork under C section top board is put setting sloping coefficient when slope processes.
Its two:
A underground engineering construction method for road, comprises the following steps:
(1) construction ground is divided into three sections, it is respectively A, B section of middle C section and both sides;
(2) closing C section, to the construction of C section, the excavation top layer earthwork, does C section top board;
(3) backfilling the C section earthwork, A section and B section are constructed simultaneously, the excavation top layer earthwork, to base plate basic unit, does A, B, C section base plate;
(4) A, B section wallboard is done;
(5) A, B section top board is done;
(6) A, B section earthwork is backfilled.
As further improvement, in step (2), after closing C section, before the excavation top layer earthwork, carrying out two row's pile foundation constructions, steel lattice column construction, C section top board and two row's steel lattice columns are connected to form a reinforced concrete bridge;
In step (3), when A section and B section are constructed simultaneously, carry out steel sheet pile or drilled pile construction, and do grit and form foundation pit enclosure structure, then pile foundation construction, makees horizontal steel pipe at interval of a segment distance and supports, connect together supporting the top board with C section, after earth excavation to base plate basic unit, the earthwork under C section top board is dug out below A section or B section or respectively excavates 50% from A and B section respectively;
Before step (6) backfills A, B section earthwork, remove steel pipe support, do WATER REPELLENT.
Present invention also offers the treatment process for the construction joint produced in above two kinds of constructional methods:
Top board construction seam between A section and C section, C section and B section is done WATER REPELLENT, extends along top board construction seam to both sides and be provided with coating waterproof layer, sealing coat, pea gravel concreten protective layer from bottom to up successively.
Construction of bottom plates seam is done WATER REPELLENT, extends along construction of bottom plates seam to both sides and be provided with concrete bed course, waterproof layer, pea gravel concreten protective layer from bottom to up successively.
The wallboard construction joint of A section and B section is done WATER REPELLENT, is provided with outside wallboard and goes along with sb. to guard him wall together, outside the wallboard extended along wallboard construction joint to both sides, be provided with waterproof layer, screed-coat successively.
As further improvement: top board construction stitches the coating waterproof layer within the scope of the 30-50cm of both sides and is provided with coating water-proof enhancement Layer between top board; In top board construction seam, upper section is provided with water-swellable water-stop glue, and hypomere is provided with muptiple-use Grouting Pipe; Pea gravel concreten protective layer thickness is 6-8cm.
As further improvement: construction of bottom plates stitches the waterproof layer within the scope of the 30-45cm of both sides and is provided with waterproof reinforced layer between pea gravel concreten protective layer; Construction of bottom plates seam in hypomere be provided with water-swellable water-stop glue, upper section be provided with muptiple-use Grouting Pipe; Pea gravel concreten protective layer thickness is 4-6cm.
As further improvement: waterproof layer within the scope of wallboard construction joint both sides 30-45cm and be provided with waterproof reinforced layer between wallboard; Being provided with water-swellable water-stop glue in wallboard construction joint, muptiple-use Grouting Pipe is arranged in the middle of wallboard construction joint, and water-swellable water-stop glue is between wallboard and muptiple-use Grouting Pipe, and distance wallboard 9-11cm, apart from muptiple-use Grouting Pipe 5-7cm.
The optimum scope of application of the present invention:
1, region, the north, ground water table >=-10 meter;
2, soil property is the good soil layers of earth bearing strength such as sandy soil, loess, clay.
Compared with prior art, the present invention has following feature:
1, road surface is disposed adjacent as A section, C section and B section by the present invention successively, it is achieved that efficient, safe construction; While building underground works, the duration shortens, and ensures that driveway is two-way current; Solve engineering construction to be subject to excavating the restriction of the degree of depth, problem that a rate of advance is low; Comparing sheltered reverse excavation, engineering drops into and more economizes, and difficulty of construction is less simultaneously.
2, adopting the 2nd kind of scheme, basement bottom board can be once-forming, does not stay construction joint, water-repellancy and reliability height; Under C section top board, the earthwork can be dug up together with A with the B section earthwork, need not put slope process, reduce by a procedure, security height; A and B constructs simultaneously and can save for 1/3 duration, and benefit is higher; But requiring that road is wider, wagon flow amount is less. Therefore can adopt the first scheme when, wagon flow amount narrower at road is bigger, the 2nd kind of scheme when road is wider, wagon flow amount is less, can be adopted.
Accompanying drawing explanation
Fig. 1 is top board construction seam waterproof construction schematic diagram;
Fig. 2 is construction of bottom plates seam waterproof construction schematic diagram;
Fig. 3 is wallboard construction joint waterproof construction schematic diagram.
In figure: 1-top board, 2-base plate, 3-wallboard, 4-top board construction seam, 5-construction of bottom plates seam, 6-wallboard construction joint, 7-water-swellable water-stop glue, the muptiple-use Grouting Pipe of 8-, 9-coating waterproof layer, 10-sealing coat, 11-pea gravel concreten protective layer, 12-coating water-proof enhancement Layer, 13-concrete bed course, 14-waterproof layer, 15-waterproof reinforced layer, 16-go along with sb. to guard him wall, 17-screed-coat.
Embodiment
Embodiment will in conjunction with Figure of description below, and the present invention is described further.
Embodiment 1
For place narrower at road, that wagon flow amount is bigger as underground garage is built in railway station, the first scheme is adopted to construct:
(1) construction ground is divided into three sections, it is respectively A, B section of middle C section and both sides
(2) closing C section, surrounding arranges building enclosure and road surface enclosing, traffic diversion, before the excavation top layer earthwork, carries out two row's pile foundation constructions, steel lattice column construction, and to the construction of C section, the excavation top layer earthwork, does C section top board 1; C section top board 1 and two row's steel lattice columns are connected to form a reinforced concrete bridge;
(3) pipeline is recovered, the backfill C section earthwork, recovers traffic, A section is constructed, carry out steel sheet pile or drilled pile construction, and do grit and form foundation pit enclosure structure, then pile foundation construction, make horizontal steel pipe at interval of a segment distance and support, connect together supporting the top board 1 with C section, after earth excavation to base plate basic unit, the 1 time earthwork of C section top board being put slope process or local reinforcing, putting setting sloping coefficient when slope processes is 0.67; The excavation top layer earthwork, to base plate basic unit, does A section base plate 2;
(4) A section wallboard 3 is done;
(5) do A section top board 1 to be connected with C section top board 1;
(6) removing steel pipe to support, do WATER REPELLENT, recover pipeline, the backfill A section earthwork, recovers traffic, and to the construction of B section, the C section earthwork, to base plate basic unit, is excavated by the excavation top layer earthwork in the lump, does B section and C section base plate 2 is one overall; Do B section wallboard 3; Do B section top board 1 and connect C section top board 1;
(7) recovering pipeline, the backfill B section earthwork, recovers traffic.
Embodiment 2
For local construction wider at road, that wagon flow amount is less, adopt the 2nd kind of scheme construction:
(1) construction ground is divided into three sections, it is respectively A, B section of middle C section and both sides
(2) closing C section, surrounding arranges building enclosure and road surface enclosing, traffic diversion, before the excavation top layer earthwork, carries out two row's pile foundation constructions, steel lattice column construction, and to the construction of C section, the excavation top layer earthwork, does C section top board 1;C section top board 1 and two row's steel lattice columns are connected to form a reinforced concrete bridge;
(3) pipeline is recovered, the backfill C section earthwork, recover traffic, A section and B section are constructed simultaneously, carries out steel sheet pile or drilled pile construction, and do grit and form foundation pit enclosure structure, then pile foundation construction, makees horizontal steel pipe at interval of a segment distance and supports, connect together supporting the top board 1 with C section, the excavation top layer earthwork, to base plate basic unit, respectively excavates 50% from A and B section respectively for the 1 time earthwork of C section top board; Doing A, B, C section base plate 2 is an entirety;
(4) A, B section wallboard 3 is done;
(5) doing A, B section top board 1 is an entirety;
(6) removing steel pipe to support, do WATER REPELLENT, recover pipeline, backfill A, B section earthwork, recovers traffic.
For embodiment 1 and 2, the top board construction seam 4 between A section and C section, C section and B section is done WATER REPELLENT, stitch 4 along top board construction and be provided with coating waterproof layer 9, sealing coat 10, pea gravel concreten protective layer 11 from bottom to up successively to both sides extension. Top board construction stitches the coating waterproof layer 9 within the scope of 4 both sides 30cm and is provided with coating water-proof enhancement Layer 12 between top board 1; In top board construction seam 4, upper section is provided with water-swellable water-stop glue 7, and hypomere is provided with muptiple-use Grouting Pipe 8; Pea gravel concreten protective layer 11 thickness is 7cm.
For embodiment 1, the construction of bottom plates seam 5 between A section and B section is done WATER REPELLENT, stitch 5 along construction of bottom plates and be provided with concrete bed course 13, waterproof layer 14, pea gravel concreten protective layer 11 from bottom to up successively to both sides extension; Construction of bottom plates stitches the waterproof layer 14 within the scope of 5 both sides 30cm and is provided with waterproof reinforced layer 15 between pea gravel concreten protective layer 11; Construction of bottom plates seam 5 in hypomere be provided with water-swellable water-stop glue 7, upper section be provided with muptiple-use Grouting Pipe 8; Pea gravel concreten protective layer 11 thickness is 5cm.
For embodiment 1 and 2, the wallboard construction joint 6 of A section and B section is done WATER REPELLENT, is provided with outside wallboard 3 and goes along with sb. to guard him wall 16 together, outside the wallboard 3 extended along wallboard construction joint 6 to both sides, be provided with waterproof layer 9, screed-coat 17 successively. Waterproof layer 9 within the scope of wallboard construction joint 6 both sides 30cm and be provided with waterproof reinforced layer 15 between wallboard 3; Being provided with water-swellable water-stop glue 7 in wallboard construction joint 6, muptiple-use Grouting Pipe 8 is arranged in the middle of wallboard construction joint 6, and water-swellable water-stop glue 7 is between wallboard 3 and muptiple-use Grouting Pipe 8, and distance wallboard 3 has 10cm, has 6cm apart from muptiple-use Grouting Pipe 8.
The thickness of underground wallboard 3 can be determined according to the soil property situation that the distance of the height of surrounding buildings thing, the scale of construction and wallboard, ground preloading and geological prospecting report are indicated, buried depth is two times of underground works buried depth.
Owing to underground works is positioned at below ordinary water level, reliable measure of anti float must be taked, outside the wallboard of underground, within the scope of 1m, it is provided with well-points dewatering, ground water table is controlled 1.5m place below shoveling layer, only complete at underground engineering construction, the backfill earthwork and recovery road can be removed after completing.
Claims (9)
1. the underground engineering construction method of a road, it is characterised in that comprise the following steps:
(1) construction ground is divided into three sections, it is respectively A, B section of middle C section and both sides;
(2) close C section, to the construction of C section, before the excavation top layer earthwork, carry out two row's pile foundation constructions, steel lattice column construction; The excavation top layer earthwork, does C section top board, and C section top board and two row's steel lattice columns are connected to form a reinforced concrete bridge;
(3) backfill the C section earthwork, after closing A section, to the construction of A section, carry out steel sheet pile or drilled pile construction, and do grit and form foundation pit enclosure structure, then pile foundation construction, make horizontal steel pipe at interval of a segment distance and support, connect together supporting the top board with C section;The earthwork under C section top board, to base plate basic unit, is put slope process or local reinforcing, is done A section base plate by the excavation top layer earthwork;
(4) A section wallboard is done;
(5) A section top board is done;
(6) remove steel pipe before backfilling the A section earthwork to support, do WATER REPELLENT; The backfill A section earthwork, to the construction of B section, the C section earthwork, to base plate basic unit, is excavated when excavating the B section earthwork, is done B section and C section base plate by the excavation top layer earthwork in the lump; Do B section wallboard; Do B section top board;
(7) the B section earthwork is backfilled.
2. the underground engineering construction method of a road, it is characterised in that comprise the following steps:
(1) construction ground is divided into three sections, it is respectively A, B section of middle C section and both sides;
(2) close C section, to the construction of C section, before the excavation top layer earthwork, carry out two row's pile foundation constructions, steel lattice column construction; The excavation top layer earthwork, does C section top board, and C section top board and two row's steel lattice columns are connected to form a reinforced concrete bridge;
(3) the C section earthwork is backfilled, A section and B section are constructed simultaneously, carry out steel sheet pile or drilled pile construction, and do grit and form foundation pit enclosure structure, then pile foundation construction, make horizontal steel pipe at interval of a segment distance and support, connect together supporting the top board with C section, the excavation top layer earthwork, to base plate basic unit, is dug out below A section or B section for the earthwork under C section top board or is respectively excavated 50% from A and B section respectively, do A, B, C section base plate;
(4) A, B section wallboard is done;
(5) A, B section top board is done;
(6) remove steel pipe before backfilling A, B section earthwork to support, do WATER REPELLENT; Backfill A, B section earthwork.
3. the underground engineering construction method of road according to claim 1 and 2; it is characterized in that: the top board construction seam between A section and C section, C section and B section is done WATER REPELLENT, extend along top board construction seam to both sides and be provided with coating waterproof layer, sealing coat, pea gravel concreten protective layer from bottom to up successively.
4. the underground engineering construction method of road according to claim 1 and 2; it is characterized in that: construction of bottom plates seam is done WATER REPELLENT, extend along construction of bottom plates seam to both sides and be provided with concrete bed course, waterproof layer, pea gravel concreten protective layer from bottom to up successively.
5. the underground engineering construction method of road according to claim 1 and 2, it is characterized in that: the wallboard construction joint of A section and B section is done WATER REPELLENT, it is provided with outside wallboard and goes along with sb. to guard him wall together, outside the wallboard extended along wallboard construction joint to both sides, be provided with waterproof layer, screed-coat successively.
6. the underground engineering construction method of road according to claim 1, it is characterised in that: it is 0.67 that the earthwork under C section top board is put setting sloping coefficient when slope processes.
7. the underground engineering construction method of road according to claim 3, it is characterised in that: top board construction stitches the coating waterproof layer within the scope of the 30-50cm of both sides and is provided with coating water-proof enhancement Layer between top board; In top board construction seam, upper section is provided with water-swellable water-stop glue, and hypomere is provided with muptiple-use Grouting Pipe; Pea gravel concreten protective layer thickness is 6-8cm.
8. the underground engineering construction method of road according to claim 4, it is characterised in that: construction of bottom plates stitches the waterproof layer within the scope of the 30-45cm of both sides and is provided with waterproof reinforced layer between pea gravel concreten protective layer; Construction of bottom plates seam in hypomere be provided with water-swellable water-stop glue, upper section be provided with muptiple-use Grouting Pipe; Pea gravel concreten protective layer thickness is 4-6cm.
9. the underground engineering construction method of road according to claim 5, it is characterised in that: waterproof layer within the scope of wallboard construction joint both sides 30-45cm and be provided with waterproof reinforced layer between wallboard;Being provided with water-swellable water-stop glue in wallboard construction joint, muptiple-use Grouting Pipe is arranged in the middle of wallboard construction joint, and water-swellable water-stop glue is between wallboard and muptiple-use Grouting Pipe, and distance wallboard 9-11cm, apart from muptiple-use Grouting Pipe 5-7cm.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104153397B (en) * | 2014-08-06 | 2016-05-18 | 中国三冶集团有限公司 | A kind of concrete wall Case Study on Construction Joint Water-proofing |
| CN106759367A (en) * | 2017-02-24 | 2017-05-31 | 中铁大桥勘测设计院集团有限公司 | The temporary road laying method of open-cut foundation ditch |
| CN108678000B (en) * | 2018-07-20 | 2020-06-12 | 中铁三局集团有限公司 | U-shaped retaining structure for roadbed underpass highway and construction method thereof |
| CN109667229A (en) * | 2018-10-17 | 2019-04-23 | 中铁二十四局集团安徽工程有限公司 | A kind of contrary sequence method foundation pit top temporary trestle bridge plate method for dismounting |
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