CN110219256B - Construction method for complex support of channel passing through box culvert - Google Patents
Construction method for complex support of channel passing through box culvert Download PDFInfo
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- CN110219256B CN110219256B CN201910520262.3A CN201910520262A CN110219256B CN 110219256 B CN110219256 B CN 110219256B CN 201910520262 A CN201910520262 A CN 201910520262A CN 110219256 B CN110219256 B CN 110219256B
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- 238000010276 construction Methods 0.000 title claims abstract description 52
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 45
- 239000010959 steel Substances 0.000 claims abstract description 45
- 238000009412 basement excavation Methods 0.000 claims abstract description 14
- 230000000149 penetrating effect Effects 0.000 claims abstract description 13
- 239000002689 soil Substances 0.000 claims abstract description 12
- 238000000034 method Methods 0.000 claims abstract description 10
- 230000003014 reinforcing effect Effects 0.000 claims description 4
- 230000003487 anti-permeability effect Effects 0.000 claims description 3
- 239000004575 stone Substances 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F5/00—Draining the sub-base, i.e. subgrade or ground-work, e.g. embankment of roads or of the ballastway of railways or draining-off road surface or ballastway drainage by trenches, culverts, or conduits or other specially adapted means
- E01F5/005—Culverts ; Head-structures for culverts, or for drainage-conduit outlets in slopes
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
- E02D17/04—Bordering surfacing or stiffening the sides of foundation pits
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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
- E02D5/22—Piles
- E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
Abstract
The invention discloses a construction method for a complex channel support penetrating through a box culvert, which comprises the following steps of excavating the upper part, the left outer side wall and the right outer side wall of the box culvert, and covering soil to the bottom wall of the box culvert to form a foundation pit; the right side wall and the left side wall of the box culvert are respectively and sequentially provided with three right side manual hole digging cast-in-place piles and a left side manual hole digging cast-in-place pile; grouting in soil between the right and left manual hole digging cast-in-place piles; continuously penetrating and excavating from the right side of the bottom wall of the foundation pit to the left side of the bottom wall of the foundation pit downwards, and erecting a scaffold while excavating in the excavation process; sequentially erecting three steel pipe supporting columns in the middle of the bottom wall of the box culvert; and building sidewalk channel side walls on two sides of the construction channel respectively, pouring a sidewalk channel top plate on the top of the sidewalk channel, and plugging holes at the sidewalk channel top plate corresponding to the steel pipe support columns. The method ensures the safety of the construction structure of the main body of the excavation and the channel thereof.
Description
Technical Field
The invention relates to a support construction method, in particular to a complex support construction method for a channel passing through a box culvert.
Background
As urban land is becoming more and more tense, underpasses and underground structures are often provided to alleviate this problem. Under the complex environment, the channel is required to pass through the flood control box culvert, rubble and silt are arranged under the box culvert, a sand layer is arranged, and the danger is high.
The chinese patent with the application number of CN201710366196 discloses "a bicycle expressway box culvert structure", and this box culvert structure includes hollow box, be provided with the bicycle lane in the box, the wing wall is installed to the both sides of box, the headwall is installed in the entry and the exit at box both ends, the pitch waterproof layer has been laid to the box periphery wall, the bicycle lane with be provided with the escape canal between the box. The hollow box body is arranged in barriers such as mountains in a penetrating manner, the bicycle lane is arranged in the box body and is connected with an external bicycle high-speed lane, so that the mileage is shortened, and a rider can ride the bicycle conveniently; lay the pitch waterproof layer at the periphery wall of box, make the box have good water-proof effects, set up the escape canal between bicycle lane and box, guaranteed good drainage effect, at the entry and the exit installation headwall at the both sides installation wing wall of box and box both ends, play and keep off soil and flow backwards the effect. This patent is passageway box culvert structure, sets up bicycle lane in the box, and the passageway that passes through the box culvert with this application supports the construction and is the construction field of two kinds of differences.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a complex support construction method for a channel passing through a box culvert, which has the advantages of low construction safety cost, short construction period and reliable support structure quality.
A construction method for complex channel support crossing a box culvert comprises the following steps:
(1) according to a set channel position penetrating through the box culvert, excavating earth above the road underground box culvert at the channel position and earth at the left and right outer side walls of the box culvert to the bottom wall of the box culvert to form a foundation pit, wherein the width of the foundation pit is greater than the width of the channel penetrating through the box culvert;
(2) the bottom of a foundation pit at the right side wall of the box culvert is sequentially provided with a right first manual hole-digging cast-in-place pile, a right second manual hole-digging cast-in-place pile and a right third manual hole-digging cast-in-place pile at intervals from front to back along the width direction of a channel to be constructed, wherein the excavation and the pouring of the right first manual hole-digging cast-in-place pile and the right second manual hole-digging cast-in-place pile are firstly carried out, and the excavation and the pouring of the right third manual hole-digging cast-in-place pile are carried out after the concrete strength of the right first manual hole-digging cast-in-place pile and the right second manual hole-digging cast; finally, constructing crown beams on the pile tops of the first manual hole-digging cast-in-place pile on the right side, the second manual hole-digging cast-in-place pile on the right side and the third manual hole-digging cast-in-place pile on the right side;
one part of the top wall of the first right-side manual hole-digging cast-in-place pile, the second right-side manual hole-digging cast-in-place pile and the third right-side manual hole-digging cast-in-place pile is supported on the bottom wall of the box culvert, and the other part of the top wall is arranged on the outer side of the bottom wall of the box culvert;
(3) repeating the step (2) and according to the method in the step (2), respectively arranging a left first manual hole-digging cast-in-place pile, a left second manual hole-digging cast-in-place pile and a left third manual hole-digging cast-in-place pile at the bottom of the foundation pit at the left side wall of the box culvert at intervals from front to back along the width direction of the channel to be constructed;
(4) grouting in soil between the three right-side manual hole-digging cast-in-place piles and the three left-side manual hole-digging cast-in-place piles;
(5) continuously excavating from the right side of the bottom wall of the foundation pit downwards to the bottom elevation position of the bottom plate of the construction channel and continuously excavating to the left side of the bottom wall of the foundation pit along the length direction of the construction channel in a penetrating manner, and erecting a scaffold while excavating in the excavating process so that the scaffold is supported on the bottom wall of the box culvert exposed by excavation;
(6) carrying out net hanging and guniting on soil bodies in the length directions of the front side and the rear side of the excavated construction channel, and sequentially laying a construction channel bottom plate cushion layer and a channel bottom plate at the bottom of the construction channel;
(7) sequentially erecting a first steel pipe supporting column, a second steel pipe supporting column and a third steel pipe supporting column at intervals from front to back in the width direction of the construction channel in the middle of the bottom wall of the box culvert; the bottoms of the first steel pipe support column, the second steel pipe support column and the third steel pipe support column are all fixed on the bottom plate of the construction channel, and the tops of the first steel pipe support column, the second steel pipe support column and the third steel pipe support column are fixed on the bottom wall of the box culvert;
(8) building pedestrian channel side walls on the front side and the rear side of the construction channel respectively according to the set width of the pedestrian channel along the length direction of the construction channel, wherein an inlet and an outlet of the pedestrian channel are respectively communicated with the existing basements arranged on the left side and the right side of the box culvert, and a pedestrian channel top plate is poured at the top of the pedestrian channel between the front and rear pedestrian channel side walls, wherein a second manual hole digging cast-in-place pile on the right side and a second manual hole digging cast-in-place pile on the left side are positioned between the front and rear pedestrian channel side walls, the pedestrian channel top plate is of a convex structure, and the box culvert bottom wall is supported on a boss of the pedestrian channel top plate;
(9) after the concrete strength of the top plate of the pedestrian passageway reaches 100%, building retaining walls at left and right convex shoulders of the top plate of the pedestrian passageway;
(10) removing the first steel pipe support column and the third steel pipe support column, backfilling earthwork outside the left side wall and the right side wall of the box culvert, and removing the second steel pipe support column;
(11) welding double layers of reinforcing mesh sheets on the inner walls of the holes on the top plate of the pedestrian passageway corresponding to the steel pipe support columns, then plugging the holes with micro-expansion fine stone anti-permeability concrete, laying a waterproof layer, and then laying a waterproof additional layer on the outer wall of the waterproof layer;
(12) removing the second manual hole-digging cast-in-place pile on the right side and the second manual hole-digging cast-in-place pile on the left side;
(13) filling gaps between the top plates of the pedestrian passageways and the box culverts with micro-expansive concrete;
(14) and backfilling earthwork at the top of the box culvert.
In the method, when the channel is constructed, the construction is carried out step by adopting a mode of excavating the earth and replacing the support with other structures, so that the force transmission is reasonable, economic and safe. And (4) setting reinforcing points at key positions, and transmitting the upper load to the channel bottom plate layer by using the steel pipe supporting columns. Meanwhile, the main channel structure construction is considered, so that the supporting structures at all stages are different, the manual excavation of the supporting piles, the soil body grouting, the scaffold, the steel pipe supporting columns and the layer-by-layer progressive progression ensure the safety of the excavation and the main channel structure construction.
Drawings
FIG. 1 is a schematic view of a construction node in a top view of the construction method for a complex channel support crossing a box culvert, according to the present invention;
FIG. 2 is a schematic view of a vertical construction node of the complex channel supporting construction method for box culvert penetration
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments.
As shown in the attached drawings, the complex supporting construction method for the channel penetrating through the box culvert, disclosed by the invention, comprises the following steps of:
(1) according to a set channel position penetrating through the box culvert, excavating earth above a road underground box culvert 1 at the channel position and earth at the left and right outer side walls of the box culvert 1 to the bottom wall 2 of the box culvert to form a foundation pit, wherein the width of the foundation pit is greater than that of a construction channel penetrating through the box culvert;
(2) the bottom of a foundation pit at the right side wall of the box culvert is sequentially provided with a right first manual hole-digging cast-in-place pile 4-1, a right second manual hole-digging cast-in-place pile 4-2 and a right third manual hole-digging cast-in-place pile 4-3 along the width direction of a channel to be constructed at intervals in the front-back direction, wherein the excavation and the pouring of the right first manual hole-digging cast-in-place pile 4-1 and the right second manual hole-digging cast-in-place pile 4-2 are firstly carried out, and the excavation and the pouring of the right third manual hole-digging cast-in-place pile 4-3 are carried out after the concrete strength of the right first manual hole-digging cast-in-place pile and the right second manual hole-. And finally constructing crown beams on the pile tops of the first manual hole-digging cast-in-place pile 4-1 on the right side, the second manual hole-digging cast-in-place pile 4-2 on the right side and the third manual hole-digging cast-in-place pile 4-3 on the right side.
The first manual hole bored concrete pile, the manual hole bored concrete pile and the manual partial setting in 2 outsides of box culvert diapire of roof of digging hole bored concrete pile and right side third in the right side first manual hole bored concrete pile, the manual hole bored concrete pile and the manual hole bored concrete pile that dig in the right side are supported on the box culvert diapire and the roof another part sets up in the box culvert diapire, the manual hole bored concrete pile radially the box culvert outside enlarge 500mm usually can, it is more convenient to go out the soil during the manual hole digging, the steel reinforcement cage is transferred to the disposable of being convenient for, construction quality can be guaranteed.
(3) And (3) repeating the step (2) and according to the method in the step (2), respectively arranging a left first manual hole-digging cast-in-place pile 3-1, a left second manual hole-digging cast-in-place pile 3-2 and a left third manual hole-digging cast-in-place pile 3-3 at the bottom of the foundation pit at the left side wall of the box culvert at intervals from front to back along the width direction of the channel to be constructed.
Namely: the method comprises the steps of firstly excavating and pouring a first left-side first manual hole-excavating cast-in-place pile 3-1 and a second left-side second manual hole-excavating cast-in-place pile 3-2, and excavating and pouring a third left-side third manual hole-excavating cast-in-place pile 3-3 after the concrete strength of the first left-side first manual hole-excavating cast-in-place pile and the second left-side second manual hole-excavating cast-in-place pile reaches the design strength. And finally constructing crown beams on the pile tops of the first left-side manual hole-digging cast-in-place pile 3-1, the second left-side manual hole-digging cast-in-place pile 3-2 and the third left-side manual hole-digging cast-in-place pile 3-3.
The first manual hole bored concrete pile, the manual hole bored concrete pile of digging of left side second and the manual hole bored concrete pile of digging of left side third partly support on the box culvert diapire and the another part setting of roof is in the 2 outsides of box culvert diapire, the manual pile radial box culvert outside of digging the hole bored concrete pile expand 500mm usually can, it is more convenient to go out the soil during manual hole digging, is convenient for once only transfer the steel reinforcement cage, can guarantee construction quality by the at utmost.
(4) And grouting in soil bodies between the three right-side manual hole-digging cast-in-place piles and the three left-side manual hole-digging cast-in-place piles.
(5) Continuously excavating from the right side of the bottom wall of the foundation pit downwards to the bottom elevation position of a bottom plate 6 of the construction channel 5 and continuously excavating to the left side of the bottom wall of the foundation pit in a penetrating manner along the length direction of the construction channel, and erecting a scaffold while excavating in the excavation process so that the scaffold is supported on the bottom wall of the box culvert exposed by excavation;
(6) carrying out net hanging and guniting on soil bodies in the length directions of the front side and the rear side of the excavated construction channel 5, and sequentially laying a channel bottom plate cushion layer and a channel bottom plate 6 at the bottom of the construction channel 5;
(7) a first steel pipe supporting column 7-1, a second steel pipe supporting column 7-2 and a third steel pipe supporting column 7-3 are sequentially erected in the middle of the bottom wall of the box culvert 1 and at intervals in the front and back direction of the width direction of the construction channel 5. The bottoms of the first steel pipe support column, the second steel pipe support column and the third steel pipe support column are all fixed on a bottom plate 6 of the construction channel, and the tops of the first steel pipe support column, the second steel pipe support column and the third steel pipe support column are fixed on the bottom wall of the box culvert 1;
(8) building pedestrian passageway side walls 8 on the front side and the rear side of the construction passageway 5 along the length direction of the construction passageway according to the set width of the pedestrian passageway, wherein the inlet and the outlet of the pedestrian passageway are respectively communicated with the existing basements arranged on the left side and the right side of the box culvert, and a pedestrian passageway top plate 9 is poured at the top of the pedestrian passageway between the front and rear pedestrian passageway side walls 8, wherein a right second manual hole-digging cast-in-place pile 4-2 and a left second manual hole-digging cast-in-place pile 3-2 are positioned between the front and rear pedestrian passageway side walls 8, the pedestrian passageway top plate 9 is of a convex structure, and the box culvert bottom wall 2 is supported on a boss of the pedestrian passageway top plate 9;
(9) after the concrete strength of the top plate 9 of the pedestrian passageway reaches 100%, building retaining walls 10 at left and right convex shoulders of the top plate of the pedestrian passageway;
(10) dismantling the first steel pipe support column 7-1 and the third steel pipe support column 7-3, backfilling earthwork outside the left side wall 1-2 and the right side wall 1-2 of the box culvert, and dismantling the second steel pipe support column 7-2;
(11) welding double-layer reinforcing mesh sheets on the inner walls of the holes on the top plate of the pedestrian passageway corresponding to the steel pipe support columns, then plugging the holes with micro-expansion fine stone anti-permeability concrete, paving a waterproof layer, and then paving a waterproof additional layer on the outer wall of the waterproof layer.
(12) The second manual hole-digging cast-in-place pile 4-2 on the right side and the second manual hole-digging cast-in-place pile 3-2 on the left side are dismantled;
(13) filling gaps between the top plate 9 of the pedestrian passageway and the box culvert 1 with micro-expansion concrete;
(14) and backfilling earthwork at the top of the box culvert 1.
Claims (1)
1. A construction method for complex channel support crossing a box culvert is characterized by comprising the following steps:
(1) according to a set channel position penetrating through the box culvert, excavating earth above the road underground box culvert at the channel position and earth at the left and right outer side walls of the box culvert to the bottom wall of the box culvert to form a foundation pit, wherein the width of the foundation pit is larger than the width of a construction channel penetrating through the box culvert;
(2) the bottom of a foundation pit at the right side wall of the box culvert is sequentially provided with a right first manual hole-digging cast-in-place pile, a right second manual hole-digging cast-in-place pile and a right third manual hole-digging cast-in-place pile at intervals from front to back along the width direction of a channel to be constructed, wherein the excavation and the pouring of the right first manual hole-digging cast-in-place pile and the right second manual hole-digging cast-in-place pile are firstly carried out, and the excavation and the pouring of the right third manual hole-digging cast-in-place pile are carried out after the concrete strength of the right first manual hole-digging cast-in-place pile and the right second manual hole-digging cast; finally, constructing crown beams on the pile tops of the first manual hole-digging cast-in-place pile on the right side, the second manual hole-digging cast-in-place pile on the right side and the third manual hole-digging cast-in-place pile on the right side;
one part of the top wall of the first right-side manual hole-digging cast-in-place pile, the second right-side manual hole-digging cast-in-place pile and the third right-side manual hole-digging cast-in-place pile is supported on the bottom wall of the box culvert, and the other part of the top wall is arranged on the outer side of the bottom wall of the box culvert;
(3) according to the method in the step (2), respectively arranging a left first manual hole-digging cast-in-place pile, a left second manual hole-digging cast-in-place pile and a left third manual hole-digging cast-in-place pile at the bottom of the foundation pit at the left side wall of the box culvert at intervals from front to back along the width direction of the channel to be constructed; finally, constructing crown beams on the pile tops of the first manual hole-digging cast-in-place pile on the left side, the second manual hole-digging cast-in-place pile on the left side and the third manual hole-digging cast-in-place pile on the left side;
(4) grouting in soil between the three right-side manual hole-digging cast-in-place piles and the three left-side manual hole-digging cast-in-place piles;
(5) continuously excavating from the right side of the bottom wall of the foundation pit downwards to the bottom elevation position of the bottom plate of the construction channel and continuously excavating to the left side of the bottom wall of the foundation pit along the length direction of the construction channel in a penetrating manner, and erecting a scaffold while excavating in the excavating process so that the scaffold is supported on the bottom wall of the box culvert exposed by excavation;
(6) carrying out net hanging and guniting on soil bodies in the length directions of the front side and the rear side of the excavated construction channel, and sequentially laying a construction channel bottom plate cushion layer and a channel bottom plate at the bottom of the construction channel;
(7) sequentially erecting a first steel pipe supporting column, a second steel pipe supporting column and a third steel pipe supporting column at intervals from front to back in the width direction of the construction channel in the middle of the bottom wall of the box culvert; the bottoms of the first steel pipe support column, the second steel pipe support column and the third steel pipe support column are all fixed on the bottom plate of the construction channel, and the tops of the first steel pipe support column, the second steel pipe support column and the third steel pipe support column are fixed on the bottom wall of the box culvert;
(8) building pedestrian channel side walls on the front side and the rear side of the construction channel respectively according to the set width of the pedestrian channel along the length direction of the construction channel, wherein an inlet and an outlet of the pedestrian channel are respectively communicated with the existing basements arranged on the left side and the right side of the box culvert, and a pedestrian channel top plate is poured at the top of the pedestrian channel between the front and rear pedestrian channel side walls, wherein a second manual hole digging cast-in-place pile on the right side and a second manual hole digging cast-in-place pile on the left side are positioned between the front and rear pedestrian channel side walls, the pedestrian channel top plate is of a convex structure, and the box culvert bottom wall is supported on a boss of the pedestrian channel top plate;
(9) after the concrete strength of the top plate of the pedestrian passageway reaches 100%, building retaining walls at left and right convex shoulders of the top plate of the pedestrian passageway;
(10) removing the first steel pipe support column and the third steel pipe support column, backfilling earthwork outside the left side wall and the right side wall of the box culvert, and removing the second steel pipe support column;
(11) welding double layers of reinforcing mesh sheets on the inner walls of the holes on the top plate of the pedestrian passageway corresponding to the steel pipe support columns, then plugging the holes with micro-expansion fine stone anti-permeability concrete, laying a waterproof layer, and then laying a waterproof additional layer on the outer wall of the waterproof layer;
(12) removing the second manual hole-digging cast-in-place pile on the right side and the second manual hole-digging cast-in-place pile on the left side;
(13) filling gaps between the top plates of the pedestrian passageways and the box culverts with micro-expansive concrete;
(14) and backfilling earthwork at the top of the box culvert.
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| CN201910520262.3A CN110219256B (en) | 2019-06-17 | 2019-06-17 | Construction method for complex support of channel passing through box culvert |
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| CN201910520262.3A CN110219256B (en) | 2019-06-17 | 2019-06-17 | Construction method for complex support of channel passing through box culvert |
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| CN111851328B (en) * | 2020-07-06 | 2021-08-27 | 海门市帕源路桥建设有限公司 | Modular, standardized prefabricating and assembling construction process for box culvert concrete structural steel bars |
| CN113026811B (en) * | 2021-03-17 | 2022-05-27 | 中电建生态环境集团有限公司 | Channel support construction method for crossing box culvert |
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| CN101725357B (en) * | 2008-10-23 | 2011-11-02 | 上海天演建筑物移位工程有限公司 | Construction method for lower section of underground tunnel |
| CN106351134B (en) * | 2016-11-02 | 2018-06-15 | 湖南联智桥隧技术有限公司 | Existing line box culvert is worn under one kind and synchronizes jacking system and jacking method |
| CN106640121B (en) * | 2017-01-11 | 2023-06-27 | 中铁第六勘察设计院集团有限公司 | Supporting structure for six-pilot tunnel large-section subway station to pass through existing line |
| CN106761779B (en) * | 2017-01-24 | 2019-02-15 | 中铁二十局集团第六工程有限公司 | A kind of shallow-depth-excavation tunnel passes through the construction method of box culvert |
| CN109235221A (en) * | 2018-11-16 | 2019-01-18 | 上海市地下空间设计研究总院有限公司 | A kind of subterranean tunnel through bridge structure |
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