CN113322843A - Construction method of permanent-faced combined box culvert structure - Google Patents
Construction method of permanent-faced combined box culvert structure Download PDFInfo
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- CN113322843A CN113322843A CN202110740399.7A CN202110740399A CN113322843A CN 113322843 A CN113322843 A CN 113322843A CN 202110740399 A CN202110740399 A CN 202110740399A CN 113322843 A CN113322843 A CN 113322843A
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- box culvert
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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
- 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
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- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
Abstract
The invention discloses a construction method of a permanent temporary combined box culvert structure, which comprises the following specific steps: 1) the supporting piles (1) are manually dug (segmented excavation); 2) hoisting a reinforcement cage of the support pile (1); 3) pouring concrete for the support piles (1); 4) mounting a D-shaped temporary beam (2); 5) excavating the earth; 6) chiseling the protecting wall of the middle pile; 7) constructing a box culvert structure; 8) backfilling and tamping; 9) grouting the backfill area, and dismantling the D-shaped temporary beam (2). The supporting pile and box culvert structure is arranged, and the supporting pile and the box culvert structure are poured into a whole to bear the load together, so that the complexity of dismantling a temporary structure is avoided, the construction efficiency is effectively improved, the construction cost and the interference to the environment are reduced, the structure is simple and compact, and the construction is convenient.
Description
Technical Field
The invention relates to the technical field of construction of underground space structures of roads, in particular to a construction method of a permanent temporary combined box culvert structure.
Background
With the continuous improvement of the development level of cities, the construction scale of municipal road engineering is increased day by day, more and more municipal roads and existing railways are crossed with each other in a crisscross mode, and the interference on the normal operation of the railways is reduced as much as possible by adopting a construction scheme that the municipal roads pass through the railways under the crossing positions. Before the construction of crossing the railway under the town road, a support pile is required to be built to ensure the safety of earth excavation and bear the upper structure load (including the self weight of the railway track and the running load of the train), and the support pile is generally only used as a temporary support structure. When the main structure is constructed, the adjacent support piles need to be removed, and the related auxiliary components such as the D-shaped beams need to be removed and replaced, so that not only are building materials wasted and a large amount of building wastes are manufactured, but also the construction progress can be delayed, and the construction cost is greatly increased.
Disclosure of Invention
The invention aims to solve the technical problem of providing a construction method of a permanent temporary combined box culvert structure, which has the advantages of quick construction, small environmental interference and high construction safety.
The technical scheme of the invention is as follows:
a construction method of a permanent temporary combined box culvert structure comprises the following specific steps: 1) manual hole digging (segmented excavation) of the support piles;
2) hoisting a support pile reinforcement cage;
3) pouring concrete of the supporting pile;
4) mounting a D-shaped temporary beam;
5) excavating the earth;
6) chiseling the protecting wall of the middle pile;
7) constructing a box culvert structure;
8) backfilling and tamping;
9) grouting the backfill area, and dismantling the D-shaped temporary beam.
By adopting the method, the support piles are arranged on two sides of the railway track, and the D-shaped temporary beam is arranged between the top of each support pile and the bottom of the railway track and used for supporting the upper railway track; the box culvert structure with the left and right width structures is arranged and buried in a soil layer under the railway track to be used as a main body structure of a railway underpass, so that the integral construction of the box culvert structure is realized, and the disassembly and replacement of a D-shaped temporary beam and other auxiliary components (such as universal rods) can be saved; in the construction process, the supporting piles do not need to be dismantled and the D-shaped temporary beams do not need to be replaced, the box culvert structure and the supporting piles in the corresponding positions are integrated into a whole by adopting a pouring mode, the tolerance of the pile foundation-box culvert structure system to differential settlement is improved by adopting the non-rigid connection mode, the local damage is avoided when the differential settlement occurs, the safety of the railway roadbed is ensured, the construction efficiency is greatly improved, a large amount of materials and labor cost are saved, the structure is simple and compact, and the engineering implementation is convenient.
In order to control the construction range and ensure the construction efficiency, preferably, the steps 1) to 3) are to symmetrically dig holes at equal intervals on two sides of the railway track and cast and form a plurality of support piles, and the plurality of support piles are used as temporary bearing structures in the construction period.
In order to provide an operation space for earth excavation and box culvert structure cast-in-place construction, as an optimization, in the step 4), a D temporary beam is erected at the top between two adjacent support piles, the D temporary beam comprises two longitudinal beam plates arranged in parallel, a plurality of cross beams are horizontally arranged between the two longitudinal beam plates, two ends of each cross beam are fixedly connected with the longitudinal beam plates through connecting blocks, two ballast blocking plates are symmetrically arranged at the lower end of each cross beam, one longitudinal beam plate is firstly placed in position during installation, the other longitudinal beam plate is raised to be about 0.2m higher than the sleeper surface, after the longitudinal beam pads are firmly supported, the connecting plates and the corbels are installed, and then the sleepers and the installing cross beams are replaced, so that the support piles and the D temporary beam cooperatively support the weight of an upper rail and the train running load.
In order to ensure the installation efficiency of the cross beam, preferably, when the cross beam is installed, firstly, the position of the cross beam is consistent with that of the connecting block, so that the distance between sleepers is properly adjusted in advance, and the principle of 'six-out-one' is followed when the cross beam is changed and adjusted, secondly, a large insulating rubber plate needs to be padded between each steel rail and the cross beam to prevent a track circuit from being short-circuited so as not to influence signals and travelling, and finally, when the cross beam is plugged, the main beam connecting plate is aligned and positioned, and meanwhile, a rubber pad is padded, and a fastener is arranged.
In order to ensure the safety of the railway subgrade, preferably, in the step 5), layered excavation is started after retesting and self-acceptance of the top line and the bottom line of the slope, and corresponding side slope supporting work is performed.
In order to facilitate pouring of the supporting piles and the partition wall of the box culvert structure into an integral structure, preferably, in the step 6), the supporting pile retaining walls at the middle positions are chiseled and cleaned, so that the thickness of the supporting piles is slightly smaller than the width of the box culvert partition wall.
In order to ensure the construction efficiency, preferably, in the step 7), a box culvert structure is manufactured, wherein the box culvert structure comprises a left frame and a right frame, a concrete cushion is firstly paved, a chute is matched with manual mold feeding, then an inserted vibrator is used for vibrating and compacting, and finally manual floating is carried out; then, the box culvert bottom plate construction comprises positioning and paying off, checking and accepting, correcting, rechecking, binding of reinforcing steel bars, template supporting and waterproof treatment, concrete pouring and maintenance; then, the construction of the box culvert wall and the top plate comprises wall steel bar binding, wall formwork, top plate formwork supporting and waterproof treatment, top plate steel bar binding, concrete pouring and maintenance, and in order to ensure the efficiency, the left and right frames of the box culvert structure can be constructed simultaneously; and finally, pouring concrete to enable the chiseled supporting piles to become a part of the box culvert partition wall, so that a permanently-temporary combined structural form is realized.
In order to improve the bearing capacity and rigidity of foundation soil and further ensure the safety and durability of the box culvert structure, preferably, the step 8) is to backfill and tamp the surrounding of the box culvert channel in layers, namely, fill and tamp the space between the D beam and the box culvert structure, and adopt a non-rigid connection mode between the box culvert structure and the support piles, so that the tolerance of the pile foundation-box culvert structure system to differential settlement is improved, and local damage can be avoided when the differential settlement occurs.
In order to improve the bearing capacity and reduce the construction operation range, the supporting pile is preferably a bottom-expanding reinforced concrete solid pile.
Has the advantages that: the supporting pile and box culvert structure is arranged, and the supporting pile and the box culvert structure are poured into a whole to bear the load together, so that the complexity of dismantling a temporary structure is avoided, the construction efficiency is effectively improved, the construction cost and the interference to the environment are reduced, the structure is simple and compact, and the construction is convenient.
Drawings
Fig. 1 is a schematic construction structure diagram of a support pile and box culvert structure.
Fig. 2 is a schematic structural diagram of a box culvert structure and a D-beam.
Fig. 3 is a view from a-a in fig. 2.
Detailed Description
The invention will be further explained with reference to the drawings.
As shown in fig. 1, fig. 2 and fig. 3, the shaded portion in fig. 1 is a box culvert structure, and the specific steps of the present invention are as follows:
1) the supporting piles 1 are manually dug (segmented excavation); 2) hoisting a reinforcement cage of the support pile 1;
3) the method comprises the following three steps of pouring concrete of the support piles 1, wherein holes are symmetrically dug in the two sides of a railway track at equal intervals, the support piles 1 are poured and formed into a plurality of support piles 1, the support piles 1 adopt expanded-base reinforced concrete solid piles (shown in a figure 1), and the support piles 1 are used as temporary bearing structures in the construction period.
4) The method comprises the following steps of installing a D temporary beam 2, erecting the D temporary beam 2 at the top between two adjacent support piles 1, wherein the D temporary beam 2 comprises two longitudinal beam plates 21 which are arranged in parallel, horizontally arranging a plurality of cross beams 22 between the two longitudinal beam plates 21, connecting and fixing two ends of each cross beam 22 with the longitudinal beam plates 21 through connecting blocks 221, symmetrically arranging two ballast blocking plates 23 at the lower end of each cross beam 22, firstly placing one longitudinal beam plate 21 in place during installation, raising the other longitudinal beam plate 21 to be higher than a sleeper surface by about 0.2m, installing connecting plates and cow legs after the longitudinal beam plates are firmly supported, and then replacing sleepers and installing the cross beams 22, so that the support piles 1 and the D temporary beam 2 cooperatively support the weight of an upper rail and the train running load.
It should be noted that, when the cross beam 22 is installed, firstly, the position of the cross beam 22 should be consistent with the position of the connecting block 221, so the distance between the sleepers should be adjusted properly in advance, and the principle of "six-out-one" should be followed when the cross beam is changed and adjusted, secondly, a large insulating rubber plate needs to be padded between each steel rail and the cross beam 22 to prevent the short circuit of the track circuit so as to avoid affecting signals and traveling, and finally, when the cross beam 22 is plugged in, the main beam connecting plate needs to be aligned and positioned, and simultaneously, a rubber pad is padded, and fasteners are fastened.
5) And excavating earthwork, namely excavating in layers after retesting and self-acceptance on a top line and a bottom line of a slope, and performing corresponding side slope supporting work.
6) And chiseling the protecting wall of the middle pile, chiseling and cleaning the protecting wall of the supporting pile 1 in the middle position, and enabling the thickness of the protecting wall to be slightly smaller than the width of the box culvert partition wall.
7) Constructing a box culvert structure, wherein the box culvert structure comprises a left frame and a right frame (shown in figure 1), firstly paving a concrete cushion, matching a manual mold through a chute, compacting by vibration through a plug-in vibrator, and finally manually trowelling; then, the box culvert bottom plate construction comprises positioning and paying off, checking and accepting, correcting, rechecking, binding of reinforcing steel bars, template supporting and waterproof treatment, concrete pouring and maintenance; then, the construction of the box culvert wall body and the top plate comprises wall body steel bar binding, wall body template, top plate template supporting and waterproof treatment, top plate steel bar binding, concrete pouring and maintenance, and in order to ensure the efficiency, the left and right frames of the box culvert structure can be simultaneously constructed; and finally, pouring concrete to enable the chiseled supporting pile 1 to become a part of the box culvert partition wall, so as to realize a permanently-combined structural form.
8) And backfilling and tamping, namely backfilling and tamping the periphery of the box culvert channel in layers, namely filling and tamping the space between the D beam 2 and the box culvert structure, and adopting a non-rigid connection mode between the box culvert structure and the support piles 1 to improve the tolerance of the pile foundation-box culvert structure system to differential settlement and ensure that no local damage is generated when the differential settlement occurs.
9) Grouting the backfill area, and dismantling the D-shaped temporary beam 2.
The construction method realizes the integral construction of the box culvert structure, and simultaneously can save the disassembly and replacement of the D-shaped beam 2 and other auxiliary components (such as universal rods); need not demolish fender pile 1 and tear open and trade D just roof beam 2 among the work progress to adopt the mode of pouring to make box culvert structure and the fender pile 1 that corresponds the position combine together structure, guaranteed the safety of railway roadbed, greatly improved the efficiency of construction and saved a large amount of materials and cost of labor, simple structure is compact, and the engineering implementation is convenient.
The undescribed parts of the present invention are consistent with the prior art, and are not described herein.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent structures made by using the contents of the present specification and the drawings are directly or indirectly applied to other related technical fields, and are within the scope of the present invention.
Claims (9)
1. A construction method of a permanent-faced combined box culvert structure is characterized by comprising the following steps: the method comprises the following specific steps: 1) the supporting piles (1) are manually dug (segmented excavation);
2) hoisting a reinforcement cage of the support pile (1);
3) pouring concrete for the support piles (1);
4) mounting a D-shaped temporary beam (2);
5) excavating the earth;
6) chiseling the protecting wall of the middle pile;
7) constructing a box culvert structure;
8) backfilling and tamping;
9) grouting the backfill area, and dismantling the D-shaped temporary beam (2).
2. The construction method of the permanent adjacent combined box culvert structure according to claim 1, wherein the construction method comprises the following steps: and in the steps 1) to 3), holes are symmetrically dug at equal intervals on two sides of the railway track, and a plurality of support piles (1) are formed by pouring, wherein the plurality of support piles (1) are used as temporary bearing structures in the construction period.
3. The construction method of the permanent adjacent combined box culvert structure according to claim 1, wherein the construction method comprises the following steps: in the step 4), a D-shaped temporary beam (2) is erected at the top between two adjacent support piles (1), the D-shaped temporary beam (2) comprises two longitudinal beam plates (21) which are arranged in parallel, a plurality of cross beams (22) are horizontally arranged between the two longitudinal beam plates (21), two ends of each cross beam (22) are fixedly connected with the longitudinal beam plates (21) through connecting blocks (221), two blocking plates (23) are symmetrically arranged at the lower end of each cross beam (22), one longitudinal beam plate (21) is firstly placed in place during installation, the other longitudinal beam plate (21) is padded to a height which is about 0.2m higher than the sleeper surface, after the longitudinal beam plates are firmly supported, the connecting plates and the brackets are installed, and then sleepers are replaced and the cross beams (22) are installed, so that the support piles (1) and the D-shaped temporary beam (2) cooperatively support the weight of the upper rail and the train running load.
4. The construction method of the permanent adjacent combined box culvert structure according to claim 3, wherein the construction method comprises the following steps: when the cross beam (22) is installed, firstly, the position of the cross beam (22) is consistent with that of the connecting block (221), so that the distance between sleepers is properly adjusted in advance, and the principle of 'six-out-one' is followed when the cross beam is changed and adjusted, secondly, a large insulating rubber plate needs to be padded between each steel rail and the cross beam (22) to prevent a track circuit from short circuit so as not to influence signals and travelling, and finally, the main beam connecting plate needs to be aligned and positioned when the cross beam (22) is plugged in, and meanwhile, a rubber pad is padded to well form a fastener.
5. The construction method of the permanent adjacent combined box culvert structure according to claim 1, wherein the construction method comprises the following steps: in the step 5), layered excavation is started after retesting and self-acceptance of the top line and the bottom line of the slope, and corresponding side slope support work is performed.
6. The construction method of the permanent adjacent combined box culvert structure according to claim 1, wherein the construction method comprises the following steps: and in the step 6), chiseling and cleaning the retaining wall of the support pile (1) at the middle position to enable the thickness of the retaining wall to be slightly smaller than the width of the box culvert partition wall.
7. The construction method of the permanent adjacent combined box culvert structure according to claim 1, wherein the construction method comprises the following steps: in the step 7), a box culvert structure is manufactured, wherein the box culvert structure comprises a left frame and a right frame, a concrete cushion is firstly paved, the concrete cushion is matched with a manual mold through a chute, then a vibrator is inserted to vibrate and compact, and finally manual floating is carried out; then, the box culvert bottom plate construction comprises positioning and paying off, checking and accepting, correcting, rechecking, binding of reinforcing steel bars, template supporting and waterproof treatment, concrete pouring and maintenance; then, the construction of the box culvert wall body and the top plate comprises wall body steel bar binding, wall body formwork, top plate formwork supporting and waterproof treatment, top plate steel bar binding, concrete pouring and maintenance, and in order to ensure the efficiency, the left and right frames of the box culvert structure can be constructed simultaneously; and finally, pouring concrete to enable the chiseled supporting pile (1) to become a part of the box culvert partition wall, so as to realize a permanently-temporary combined structural form.
8. The construction method of the permanent adjacent combined box culvert structure according to claim 1, wherein the construction method comprises the following steps: and 8) backfilling and tamping the surrounding layers of the box culvert channel, namely filling and tamping the space between the D temporary beam (2) and the box culvert structure, and adopting a non-rigid connection mode between the box culvert structure and the support piles (1), so that the tolerance of the pile foundation-box culvert structure system to differential settlement is improved, and local damage can not be generated when the differential settlement occurs.
9. The construction method of the permanent adjacent combined box culvert structure according to claim 1, wherein the construction method comprises the following steps: the supporting piles (1) adopt expanded-base reinforced concrete solid piles.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110740399.7A CN113322843A (en) | 2021-06-30 | 2021-06-30 | Construction method of permanent-faced combined box culvert structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110740399.7A CN113322843A (en) | 2021-06-30 | 2021-06-30 | Construction method of permanent-faced combined box culvert structure |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2530850A1 (en) * | 2005-12-16 | 2007-06-16 | Terratech Consulting Ltd. | Open bottom box culvert |
| CN106012878A (en) * | 2016-08-03 | 2016-10-12 | 长沙楚泰建筑劳务有限公司 | Construction method for continuous type construction auxiliary girder in jacking of railway box culvert and device for implementing construction method |
| CN111980063A (en) * | 2020-08-17 | 2020-11-24 | 济南轨道交通集团有限公司 | Subway open cut interval prefabricated box culvert laminated structure and construction method thereof |
-
2021
- 2021-06-30 CN CN202110740399.7A patent/CN113322843A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2530850A1 (en) * | 2005-12-16 | 2007-06-16 | Terratech Consulting Ltd. | Open bottom box culvert |
| CN106012878A (en) * | 2016-08-03 | 2016-10-12 | 长沙楚泰建筑劳务有限公司 | Construction method for continuous type construction auxiliary girder in jacking of railway box culvert and device for implementing construction method |
| CN111980063A (en) * | 2020-08-17 | 2020-11-24 | 济南轨道交通集团有限公司 | Subway open cut interval prefabricated box culvert laminated structure and construction method thereof |
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Application publication date: 20210831 |
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