CN107574836A - Cross the constructing structure and construction method of urban road underpass - Google Patents
Cross the constructing structure and construction method of urban road underpass Download PDFInfo
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- CN107574836A CN107574836A CN201710723576.4A CN201710723576A CN107574836A CN 107574836 A CN107574836 A CN 107574836A CN 201710723576 A CN201710723576 A CN 201710723576A CN 107574836 A CN107574836 A CN 107574836A
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Abstract
The invention discloses a kind of constructing structure for crossing urban road underpass, including the first constructing structure (110) and the second constructing structure (120)；First constructing structure (110) includes fender post (1) and water-stop curtain (2), the top of both sides fender post (100) is provided with the first Guan Liang (3), thick reinforced concrete cover plate (4) is provided between the Guan Liang of both sides first (3), support meanss are provided between the fender post (1) of both sides；Second constructing structure is in addition to setting reinforced concrete between the Guan Liang at top and supporting, other structures are identical with the first constructing structure, and concrete bed course (9) of being always or usually as specified is all provided with below the first construction mechanism (110) and the second constructing structure (120) part in underpass (100).The invention also discloses a kind of construction method for crossing urban road underpass.A kind of constructing structure and construction method for crossing urban road underpass disclosed by the invention, the construction Shi Feng road times are short, and efficiency of construction is high, Stability Analysis of Structures.
Description
Technical field
The present invention relates to underpass construction field, specifically a kind of construction knot for crossing urban road underpass
Structure and construction method.
Background technology
The construction method generally used in underpass or constructing metro tunnel at present includes heavy excavation construction, and shield
Structure machinery driving jacking.
Conventional method is generally heavy excavation form of construction work, and will construct road surface Feng Dao first, fender post of constructing, then construct
Earth excavation is supported, then lower floor's earthwork is excavated in lower road support of constructing again, so circulation, is excavated layer by layer from top to bottom, until digging extremely
Bottom of foundation ditch, underpass structure of then constructing, then backfill, then pavement engineering of constructing, this method envelope road time length, and
The downtown magnitude of traffic flow is big, and it is very big to implement difficulty, has a strong impact on that civic is normally gone on a journey.
In Shield-type machinery driving jacking, first pass through Shield-type machinery and dig a hole, will followed by mechanical tunneling direction
Support frame, which promotes, withstands channel support, and this follow-up concrete frame of mode need to be first prefabricated by precast plant, then is set by transport
Received shipment is defeated to scene, is installed by Large-scale Hoisting equipment, is influenceed by hanging device, such as in city underground and underpass construction：
Round member can the prefabricated installation of burst, but abnormity and rectangular frame structure need it is prefabricated integral, after being installed on shield, Shield-type machinery
Reaction force caused by driving is transmitted to the end on the back of Starting Well with component by component again when driving moves ahead, then by
Framing component one is saved and pushed ahead with shield by back jack.
In Shield-type machinery driving jacking, although normal traffic can not be influenceed without envelope road construction processing,
There is also following problems, i.e. this method can also construct when physical dimension is smaller, jacking is closer to the distance, increase with physical dimension, pick
After entering lengthening distance, hanging device and jacking device will be unable to meet construction needs.
With the increase of development and the flow of personnel of urban transportation, the structures of small physical dimension can not meet that people go out
Capable requirement, the underpass of construction big structure size and the demand of structures are increasing, therefore need a kind of new underground badly
Passage construction structure and construction method.
The content of the invention
The technical problems to be solved by the invention are：A kind of offer construction Shi Feng road times are short, and efficiency of construction is high, and construction is tied
The stable constructing structure for crossing urban road underpass of structure.
The technical solution used in the present invention is：A kind of constructing structure for crossing urban road underpass is provided, including
The first constructing structure positioned at turnpike road part and the second constructing structure positioned at external road part；
First constructing structure is included close to underpass two sides vertically disposed fender posts, the fender post remotely under
The side of passage is provided with water-stop curtain, is equipped with the first Guan Liang described in both sides at the top of fender post, between the first Guan Liang of both sides
Provided with thick reinforced concrete cover plate, support meanss are provided between the fender post madial wall of underpass both sides；
Second constructing structure is included close to underpass two sides vertically disposed fender posts, the fender post remotely under
The side of passage is provided with water-stop curtain, is equipped with the second Guan Liang described in both sides at the top of fender post, between the second Guan Liang of both sides
Supported provided with reinforced concrete, support meanss are provided between the fender post madial wall of underpass both sides；
The underpass, which is located at below the first construction mechanism and the second constructing structure part, is all provided with concrete bed course of being always or usually as specified.
Further, described support meanss include shaped steel purlin and steel pipe support, and described shaped steel purlin is arranged at two
On the fender post madial wall of side, the both ends of the steel pipe support are connected with the shaped steel purlin of both sides respectively.
Preferably, described shaped steel purlin is Two bors d's oeuveres structure.Two bors d's oeuveres structure is more stable, firm, and work progress is more
Safety.
As an improvement, support column and adjacent reinforced concrete bodies are additionally provided with below the underpass, described plain concrete pad
Between layer passage bottom surface located underground and adjacent reinforced concrete bodies.
On the other hand, the present invention also technical problems to be solved are：A kind of offer construction Shi Feng road times are short, efficiency of construction
Height, the stable construction method for crossing urban road underpass of constructing structure.
Specifically adopted the technical scheme that：A kind of construction method for crossing urban road underpass, its feature are provided
It is, comprises the following steps：
A, in construction road surface enclosing Active workings, including turnpike road part and external road part, lead to closely lower
Road both sides are constructed fender post along its length；
Side wall upper water-out causes the earthwork to be caved in when b, to prevent from excavating passage, in fender post close to wall side construction high pressure
Rotary churning pile water stopping curtain；
C, turnpike road matrix is excavated to predeterminated position, the first Guan Liang of being constructed at the top of fender post；
D, while the first Guan Liang is performed, thick reinforced concrete cover plate of being constructed in the first Guan Liang, the first Guan Liang and thick steel are treated
Road surface backfills after muscle concrete cover plate reaches design strength requirement, recovers turnpike road traffic；
E, external road part of matrix is excavated to predeterminated position, the second Guan Liang of being constructed at the top of fender post, and it is same with this
When, construction reinforced bar concrete supports between the Guan Liang of both sides second；
F, the deep-well that draws water is being performed close to the position of underpass construction foundation pit, is carrying out cheating interior pre- precipitation, precipitation depth reaches
To hole below bottom 1m；
G, after the second Guan Liang and reinforced concrete support reach design strength, layering, segmented version earth excavation,
After vertically excavating external road part to predeterminated position first, shaped steel purlin is performed on two side, and
And steel pipe support is set up between the shaped steel purlin of both sides, apply prestressing force to steel pipe support, continue to be excavated to foundation ditch bottom；
H, and then from external road layering in the horizontal direction, segmented have been excavated in the foundation ditch of completion toward opening below cover plate
Dig, after being excavated to predeterminated position, shaped steel purlin is performed on two side, and steel pipe branch is set up between the shaped steel purlin of both sides
Support, and apply prestressing force to steel pipe support, continue to be excavated to foundation ditch bottom；
I, after being all excavated to foundation ditch bottom after turnpike road part, external road part, plain concrete bed course is built in foundation ditch bottom pour mold；
J, after cushion construction, the bottom plate for passage of constructing；
K, after bottom plate reaches design strength, shaped steel purlin and steel pipe support in side wall is removed, then pours channel side
Wall and top plate；
L, after the completion of above-mentioned steps, the backfill between cover plate and top plate is carried out in turnpike road part, and slip casting filling is close
It is real；
M, external road part backfilling of earthwork is carried out, is backfilled to reinforced concrete support and the second Guan Liang position；
N, reinforced concrete support and the second Guan Liang are removed；
O, external road part road surface is performed, after the completion of, recover external road traffic.
Further, excavation external road part of matrix to the predeterminated position described in step e refers to, from turnpike road
Any side external road is excavated or excavated simultaneously from the external road of turnpike road both sides.
Preferably, the shaped steel purlin described in step g or step h is Two bors d's oeuveres structure.
Technical scheme has advantages below compared with prior art：
The construction method of the present invention is excavated turnpike road part, is excavated to first after fender post and water-stop curtain is performed
Predetermined depth performs the first Guan Liang, while performing cover plate in the first Guan Liang, treats to enter walking along the street after the completion of cover plate, the first Guan Liang
Face backfills, and recovers turnpike road traffic, and from the point of view of construction infection degree, cover plate of the invention of first constructing can be extensive after the completion of cover plate
Multiple road traffic, cover plate is then excavated with lower part, farthest reduces the influence to traffic；Then major trunk roads are not being influenceed
Carry out excavating external road part in the case of the traffic of road, the construction of external road part is using open cut from top to bottom
Construction method, support is performed at once after excavating certain depth, prevents foundation ditch both sides from caving in, may be selected according to the depth of foundation ditch
Arranging multiplayer supports, and is supported in foundation ditch the alongst arrangement of proportional spacing, farthest ensures foundation ditch two
Side strength of wall body, because being external road, the influence for using such a mode construct to traffic in envelope road is small, outside completing
After the excavation for enclosing road sections, turnpike road bottom portion is layered out of external road section foundation ditch that excavated,
Segmented mode is excavated, and the earthwork comes out from external road section foundation ditch, and bottom plate, the side of passage are completed after all excavation of foundation pit are completed
Plate, top plate pour；
Channel part is all poured after completion reaches design strength requirement, and the present invention is using elder generation in turnpike road part lid
Backfill between plate and passage top plate, and use slip casting filling mode so that cover plate and passage top plate it is solid be cast in one
Rise, there is fender post cover plate both sides as support again, so can effectively ensure that the intensity of turnpike road roadbed, avoid due to underground
Passage two is excavated and cave-in accident occurs, turnpike road part is carrying out the backfill of external road part after all constructing, most
After perform external road part road surface, recover outlying traffic, in order to further improve efficiency of construction, the present invention is in construction method
When can also also excavate external road part, from the external road part of turnpike road both sides while open cut foundation ditch, then from two
Excavated in the foundation ditch of side towards turnpike road part.
The construction method efficiency of construction of the present invention is high, small to traffic impact, by cover plate of first constructing, then is carried out under cover plate
Support and the construction cut the earth, this method envelope road time is short (only applying man-hour requirement envelope road in fender post and cover plate), and citizen are gone out
Row influence is small, and overall construction intensity is high after the completion of passage.
Brief description of the drawings
Fig. 1 is that a kind of constructing structure for crossing urban road underpass of the present invention and the road of construction method are overlooked and shown
It is intended to.
Fig. 2 is turnpike road part E-E sectional structure charts in Fig. 1.
Fig. 3 is external road part F-F sectional structure charts in Fig. 1
Wherein, 100, underpass, 101, bottom plate, 102, side wall, 103, top plate, 1, fender post, 2, water-stop curtain, 3,
One Guan Liang, 4, thick reinforced concrete cover plate, the 5, second Guan Liang, 6, reinforced concrete support, 7, shaped steel purlin, 8, steel pipe support, 9, plain concrete pad
Layer, 10, support column, 11, adjacent reinforced concrete bodies
Embodiment
The invention will be further described with reference to the accompanying drawings and detailed description.
As shown in Figures 1 to 3, a kind of constructing structure for crossing urban road underpass provided by the invention, including positioned at
First constructing structure 110 of turnpike road part and the second constructing structure 120 positioned at external road part；
First constructing structure 110 is included close to the vertically disposed fender post 1 in the two sides of underpass 100, and both sides are gone along with sb. to guard him
Stake 1 is provided with water-stop curtain 2 in the side away from underpass 100, and the top of both sides fender post 100 is equipped with the first Guan Liang 3, and two
Thick reinforced concrete cover plate 4 is provided between first Guan Liang 3 of side, branch is additionally provided between the madial wall of fender post 1 of the both sides of underpass 100
Support arrangement, during construction, for supporting the wall of underpass foundation ditch both sides, prevent from caving in；
Second constructing structure 120 is included close to the vertically disposed fender post 1 in the two sides of underpass 10, the fender post 1
Side away from underpass 100 is provided with water-stop curtain 2, and the top of fender post 1 described in both sides is equipped with the second Guan Liang 5, both sides
The second Guan Liang 5 between be provided with reinforced concrete support 6, support dress is provided between the madial wall of fender post 1 of the both sides of underpass 100
Put；
The underpass 100, which is located at below the first construction mechanism 110 and the part of the second constructing structure 120, to be all provided with being always or usually as specified
Concrete bed course 9.
Support meanss include shaped steel purlin 7 and steel pipe support 8, and described shaped steel purlin 7 is arranged in the fender post 1 of both sides
In side wall, the both ends of steel pipe support 8 are connected with the shaped steel purlin 7 of both sides respectively, as preferable, the shaped steel purlin 7 use pair
Spell structure.
The lower section of the underpass 100 is additionally provided with support column 10 and adjacent reinforced concrete bodies 11, described plain concrete bed course 9
Between the bottom surface of passage 100 and adjacent reinforced concrete bodies 11 located underground.
Another aspect, present invention also offers a kind of construction method for crossing urban road underpass, including it is following
Step：
A, fence, enclosing Active workings, including turnpike road part are set on the road surface for needing to construct underpass 100
All carry out enclosing with external road part, then close to the position of underpass 100 both sides along channel-length direction according to
Design attitude construction fender post 1, along the length direction interval of underpass 100, uniformly distance is set the fender post 1；
Two sides upper water-out causes the earthwork to be caved in when b, to prevent from excavating passage, is constructed in fender post 1 close to wall side
High-pressure rotary-spray pile water stopping curtain 2；
C, turnpike road matrix is excavated first, after earth excavation to predetermined depth position, in the section passage both sides
Along channel-length direction the first Guan Liang 3 of construction at the top of fender post 1；
D, while the first Guan Liang 3 are performed, thick reinforced concrete cover plate 4 of being constructed in the first Guan Liang 3, thick reinforced concrete cover plate 4
Both ends set up respectively in the first Guan Liang 3 for being fixed on both sides, treat the first Guan Liang 3, thick reinforced concrete cover plate 4 reach design strength will
Ask rear road surface to backfill, recover turnpike road traffic；
E, and then external road part of matrix is excavated, earth excavation is treated to predetermined depth position, in the section passage both sides
The top of fender post 1 constructed the second Guan Liang 5 along channel-length direction, and at the same time, applied between the second Guan Liang 5 of both sides
Work reinforced concrete support 6, in this step, it can be excavated from any side external road part of turnpike road, can also be from trunk
The external road of both sides of the road is excavated towards turnpike road part simultaneously, shortens the engineering time, improves efficiency of construction；
F, in order to prevent influence on groundwater from constructing, so performing depth of drawing water close to the position of underpass construction foundation pit
Well, carry out cheating interior pre- precipitation, precipitation depth reaches hole below bottom 1m；
G, after the second Guan Liang 5 and reinforced concrete support 6 reach design strength, spoil is carried out by layering, segmented version
Side, the earthwork of external road part is down excavated first along vertical direction, after being excavated to predetermined depth position, in foundation ditch two sides
On perform shaped steel purlin 7, the shaped steel purlin 7 of both sides is separately fixed on the inwall of fender post 1, and in the shaped steel purlin 7 of both sides
Between set up steel pipe support 8, and according to reality the soft or hard situation of construction ground give steel pipe support 8 apply prestressing force, the steel pipe branch
Support 8 is used for stretching both sides fender post 1, prevents from caving in, and the steel pipe support 8 is set along channel-length direction uniform intervals, steel pipe
After the completion of support 8 is set up, continue to be excavated to bottom of foundation ditch, as preferable, the shaped steel purlin 7 set up in this step is Two bors d's oeuveres knot
Structure；
H, next excavated from external road section complete foundation ditch position be layered in the horizontal direction, segmented version from top to bottom
Excavated along the thick lower section of reinforced concrete cover plate 4, as step g, after being excavated to predeterminated position, the fender post 1 equally in two sides
On perform shaped steel purlin 7, then between both sides shaped steel purlin 7 set up steel pipe support 8, and according to reality construction ground it is soft or hard
Situation applies prestressing force to steel pipe support 8, and the steel pipe support 8 sets along channel-length direction uniform intervals, then proceeded to out
Dig to foundation ditch bottom, same as preferably, the shaped steel purlin 7 set up in this step is Two bors d's oeuveres structure；
I, after being all excavated to foundation ditch bottom after turnpike road part, external road part, plain concrete bed course 9 is built in foundation ditch bottom pour mold,
In the embodiment of the present invention, due to bottom of foundation ditch, the soil is porous or softer, so in bottom of foundation ditch both sides close to fender post 1
Place performs support column 10, then adjacent reinforced concrete bodies 11 is performed on the support column 10 of both sides, finally in the agent structure
11 tops pour plain concrete bed course 9；
J, turnpike road is treated, after the plain concrete bed course 9 of external road part bottom of foundation ditch is all constructed, underpass of constructing
10 bottom plate 101；
K, after bottom plate 101 reaches design strength, the shaped steel purlin 7 in side wall is removed along channel-length direction segmented
With steel pipe support 8, the side wall 102 and top plate 103 of underpass 100 are then poured, often removes one end shaped steel purlin 7 and steel pipe branch
Support 8, pours the corresponding side wall 102 of underpass 100 and top plate 103 at once, so repeats to remove, construction, until entirely
All side walls 102 of lower channel 100, top plate 103 pour completion；
L, after the completion for the treatment of above-mentioned steps, returning between thick reinforced concrete cover plate 4 and top plate 103 is carried out in turnpike road part
Fill out, need slip casting filling closely knit herein so that thick reinforced concrete cover plate 4 and top plate 103 it is solid pour together with, improve overall tie
Structure intensity；
M, after turnpike road is partially completed, external road part backfilling of earthwork is carried out, treats backfilling of earthwork to reinforced concrete support 6
Behind the position of the second Guan Liang 5, reinforced concrete support 6 and the second Guan Liang 5 are removed；
O, external road part road surface is finally performed, after the completion of, recover all external road traffic.
Preferred embodiments of the present invention are described above, but are not to be construed as limiting the scope of the invention.This hair
Bright to be not only limited to above example, its concrete structure allows to change, all institutes in the protection domain of demand for independence of the present invention
The various change of work is within the scope of the present invention.
Claims (6)
- A kind of 1. constructing structure for crossing urban road underpass, it is characterised in that：Including positioned at the of turnpike road part One constructing structure (110) and the second constructing structure (120) positioned at external road part；First constructing structure (110) is included close to the vertically disposed fender post in underpass (100) two sides (1), described to go along with sb. to guard him Stake (1) is provided with water-stop curtain (2) away from side of underpass (100), is equipped with the described in both sides at the top of fender post (100) One Guan Liang (3), thick reinforced concrete cover plate (4), the fender post of underpass (100) both sides are provided between the first Guan Liang (3) of both sides (1) support meanss are provided between madial wall；Second constructing structure (120) is included close to the vertically disposed fender post in underpass (10) two sides (1), the fender post (1) side away from underpass (100) is provided with water-stop curtain (2), and the second hat is equipped with the top of fender post (1) described in both sides Beam (5), is provided with reinforced concrete support (6) between the second Guan Liang (5) of both sides, on the inside of the fender post (1) of underpass (100) both sides Support meanss are provided between wall；The underpass (100), which is located at below the first construction mechanism (110) and the second constructing structure (120) part, to be equipped with Plain concrete bed course (9).
- 2. the constructing structure according to claim 1 for crossing urban road underpass, it is characterised in that：Described support Device includes shaped steel purlin (7) and steel pipe support (8), and described shaped steel purlin (7) is arranged at fender post (1) madial wall of both sides On, the both ends of the steel pipe support (8) are connected with the shaped steel purlin (7) of both sides respectively.
- 3. the constructing structure according to claim 2 for crossing urban road underpass, it is characterised in that：Described shaped steel Purlin (7) is Two bors d's oeuveres structure.
- 4. according to the constructing structure for crossing urban road underpass described in claim 1 or 2 or 3, it is characterised in that：It is described Support column (10) and adjacent reinforced concrete bodies (11) are additionally provided with below underpass (100), described plain concrete bed course (9) is located at Between underpass (100) bottom surface and adjacent reinforced concrete bodies (11).
- 5. a kind of construction method for crossing urban road underpass, it is characterised in that comprise the following steps：A, in construction road surface enclosing Active workings, including turnpike road part and external road part, close to underpass (100) both sides are constructed fender post (1) along its length；Both sides side wall upper water-out causes to cave in when b, to prevent from excavating passage, in fender post (1) close to wall side construction high pressure Rotary churning pile water stopping curtain (2)；C, turnpike road matrix is excavated to predeterminated position, the first Guan Liang of construction (3) at the top of fender post (1)；D, while the first Guan Liang (3) are performed, thick reinforced concrete cover plate (4) of being constructed in the first Guan Liang (3), the first Guan Liang is treated (3) and thick reinforced concrete cover plate (4) reaches road surface backfill after design strength requirement, recovers turnpike road traffic；E, external road part of matrix is excavated to predeterminated position, the second Guan Liang of construction (5) at the top of fender post (1), and and this Meanwhile the construction reinforced bar concrete support (6) between the Guan Liang of both sides second (5)；F, the deep-well that draws water is performed in the position close to underpass (100) construction foundation pit, carries out cheating interior pre- precipitation, precipitation depth reaches To hole below bottom 1m；G, after the second Guan Liang (5) and reinforced concrete support (6) reach design strength, layering, segmented earth excavation,After vertically down excavating external road part to predeterminated position first, shaped steel purlin (7) is performed on two side, And steel pipe support (8) is set up between the shaped steel purlin (7) of both sides, applies prestressing force to steel pipe support (8), continues to be excavated to Foundation ditch bottom；H, and then from external road layering in the horizontal direction, segmented version have been excavated in the foundation ditch of completion toward thick reinforced concrete cover plate (4) lower section is excavated, and after being excavated to predeterminated position, shaped steel purlin (7) is performed on two side, and between the shaped steel purlin of both sides Steel pipe support (8) is set up, and applies prestressing force to steel pipe support (8), continues to be excavated to foundation ditch bottom；I, after being all excavated to foundation ditch bottom after turnpike road part, external road part, plain concrete bed course (9) is built in foundation ditch bottom pour mold；J, after cushion construction, the bottom plate (101) of construction underpass (100)；K, after bottom plate (101) reaches design strength, shaped steel purlin (7) and steel pipe support (8) in side wall is removed, is then poured The side wall (102) and top plate (103) of underpass (100)；L, after the completion of above-mentioned steps, the backfill between cover plate (4) and top plate (103) is carried out in turnpike road part, and slip casting is filled out Fill closely knit；M, external road part backfilling of earthwork is carried out, after being backfilled to reinforced concrete support (6) and the second Guan Liang (5) position, removes steel Muscle concrete supports (6) and the second Guan Liang (5)；N, external road part road surface is performed, after the completion of, recover external road traffic.
- 6. the construction method according to claim 5 for crossing urban road underpass, it is characterised in that：Described in step e Excavation external road part of matrix to predeterminated position refer to, excavated from any side external road of turnpike road or from master The external road of dry both sides of the road excavates simultaneously.
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| CN110670631A (en) * | 2019-10-16 | 2020-01-10 | 宏润建设集团股份有限公司 | Supporting structure and excavation method of comprehensive pipe gallery foundation pit |
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