CN212428824U - Steel structure supporting device of full-recovery assembly type rectangular pipe-jacking working well - Google Patents
Steel structure supporting device of full-recovery assembly type rectangular pipe-jacking working well Download PDFInfo
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- CN212428824U CN212428824U CN202020265021.7U CN202020265021U CN212428824U CN 212428824 U CN212428824 U CN 212428824U CN 202020265021 U CN202020265021 U CN 202020265021U CN 212428824 U CN212428824 U CN 212428824U
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Abstract
The utility model discloses a retrieve assembled rectangle push pipe working well steel construction supporting device entirely, include: prefabricating a ring beam, prefabricating a supporting structure, prefabricating a hole, prefabricating a back wall and sealing a bottom; the prefabricated supporting structure is formed by connecting H-shaped steel, profiled steel plates, corner columns and corner braces. The prefabricated ring beam is provided with embedded parts connected with the H-shaped steel and the corner columns. The prefabricated supporting structure comprises a prefabricated component and a prefabricated supporting structure body. The prefabricated hole comprises an inner hole structure and an outer hole structure, and the inner hole structure and the outer hole structure can be disassembled, so that the construction of the jacking pipe in and out of the hole is met. The outer opening is provided with a flange plate capable of fixing the water stop bar, so that slurry leakage is avoided when the push bench pushes in. The prefabricated back wall can be filled with concrete on the prefabricated opening structure basis, and the bearing capacity of the back wall structure is improved. The device has prefabricated pin-connected panel entrance to a cave and can provide the prefabricated pin-connected panel back wall of enough counter-force, can effectively solve prior art and need the on-the-spot cutting entrance to a cave and set up the technical deficiency of back wall alone.
Description
Technical Field
The utility model relates to an infrastructure construction field such as municipal administration specifically is a retrieve assembled rectangle push pipe working well steel construction supporting device entirely.
Background
The pipe jacking construction is used as a typical trenchless tunnel construction technology, and the pipe jacking construction technology has the characteristics of being fast in construction speed, small in influence on ground traffic, high in construction quality, free of excavation of along-line strata, low in comprehensive construction cost and the like, and is widely applied to tunnel construction with medium and small calibers. A large number of pipe jacking wells need to be built in the construction process, and the types of the pipe jacking wells comprise a working well, a receiving well, an intermediate well and the like.
The traditional construction method of the pipe jacking well generally comprises a steel sheet pile, a cast-in-place open caisson, a cast-in-place pile, a ground connecting wall and the like, and also comprises a prefabricated open caisson support (CN 202559384U), a pile-first and then-hanging plate support (CN 110485472A) and a prefabricated steel structure support (CN 206159648U). Noise pollution can be generated in the piling construction, the deformation of a foundation can be caused by the vibration in the construction, the safety of surrounding buildings (structures) is influenced, and pores can be generated in the stratum in the pile pulling process; accidents such as inclination, deviation and the like easily occur in open caisson construction, and the requirement on the construction process is high; the concrete of the cast-in-situ bored pile and the underground diaphragm wall has long solidification time, heavy construction machinery, high construction cost and can not be recycled; the prefabricated steel structure supporting technology does not solve the problems of insufficient strength of the back rest and prefabrication of the opening.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a retrieve assembled rectangle push pipe working well steel construction supporting device entirely to solve the problem that proposes among the above-mentioned background art.
A steel structure supporting device of a fully-recycled assembly type rectangular pipe-jacking working well is composed of a prefabricated ring beam, a prefabricated supporting structure, a prefabricated hole opening, a prefabricated back wall and a back cover through splicing;
the prefabricated supporting structure is formed by connecting H-shaped steel, profiled steel plates, corner columns and corner braces through bolts;
the prefabricated ring beam is of a reinforced concrete structure, and the top surface of the prefabricated ring beam is flush with the ground or slightly higher than the ground;
the prefabricated ring beam is provided with an embedded part a used for being connected with H-shaped steel of a prefabricated supporting structure;
the prefabricated ring beam is provided with an embedded part b used for being connected with a corner post of the prefabricated supporting structure;
the wing plates of the H-shaped steel are vertically arranged and used for fully utilizing the bending resistance of the H-shaped steel and improving the bearing capacity of the structure;
connecting pieces a are welded on the upper part and the lower part of the H-shaped steel at intervals, and the H-shaped steel is spliced and connected with the profiled steel sheet through the connecting pieces a;
welding a connecting piece b at one end of the H-shaped steel to realize transverse connection between the H-shaped steel;
reserving a circular connecting hole at the other end of the H-shaped steel to realize the connection between the H-shaped steel and the corner column;
reserving a circular connecting hole on the H-shaped steel wing plate to realize the connection between the H-shaped steel and the corner brace;
the profiled steel sheet has higher bending resistance than a plane plate with the same mass, and can bear larger pressure load, thereby greatly reducing the structural quality on the premise of ensuring the stable structure and improving the convenience of construction.
The left and right sides of the profiled steel sheet are welded with plane steel bars as connecting flanges, and the transverse connection of the profiled steel sheet is realized through bolts;
angle steel serving as a connecting flange is welded on the upper part and the lower part of the profiled steel sheet, and the profiled steel sheet is connected with the H-shaped steel through bolts; the angle steel can improve the connection strength between the profiled steel sheet and the H-shaped steel;
the corner columns are square steel pipes and are arranged at four corners of the rectangular working well; the connecting piece c is welded on the outer wall of the square steel pipe, so that the connection between the square steel pipe and the H-shaped steel is realized; an inner sleeve is welded at one end of the square steel pipe, a pin bolt hole is reserved at the other end of the square steel pipe, a pin bolt hole matched with the pin bolt hole on the square steel pipe is reserved on the inner sleeve, and the connection between the upper square steel pipe and the lower square steel pipe is realized through a pin bolt;
the angle brace adopts I-shaped steel, and connecting plates are welded at two ends of the I-shaped steel and are used for being connected with the H-shaped steel through bolts;
the prefabricated hole comprises an inner hole structure and an outer hole structure; the left end and the right end of the outer opening structure are connected with the corner posts, the upper end of the outer opening structure is connected with a profiled steel sheet of the prefabricated supporting structure, and the lower end of the outer opening structure is connected with the bottom seal of the working well;
the outer opening structure is formed by welding H-shaped steel, an earth facing side baffle, a rib plate and an outer opening flange plate;
the inner hole structure is formed by welding H-shaped steel, an earth facing side baffle and a rib plate;
the inner opening structure is connected with the outer opening structure through bolts, so that a prefabricated opening is formed;
the outer hole flange is connected with a fixed water stop strip, so that slurry return is avoided during jacking of the pipe jacking machine;
filling light compression-resistant concrete between the ribbed slabs in the prefabricated opening structure, and using the concrete as a prefabricated back wall; the bearing capacity of the back wall is improved, and therefore the counterforce required by jacking of the jacking pipe is provided. And meanwhile, the hole is dismantled in the back wall, and the back wall can also be used as a top pipe receiving opening.
And the back cover adopts a mode of casting concrete in situ to carry out back cover construction of the working well.
The steel structure supporting device for the fully-recovered assembled rectangular pipe-jacking working well adopts the preferable scheme that the profiled steel plate is a steel plate which is formed into a corrugated shape by adopting a plane steel plate through mechanical pressing.
The steel structure supporting device for the fully-recycled assembly type rectangular pipe-jacking working well is characterized in that the inner and outer hole flange plates are formed by rolling steel plates, and the soil facing side baffle plate and the rib plates are made of planar steel plates.
A retrieve assembled rectangle push pipe working well steel construction supporting device entirely, its preferred scheme is when the entrance to a cave is great, the interior entrance to a cave structure of integral type and outer entrance to a cave structure when heavier difficult the installation, can be in vertical to the inner and outer entrance to a cave structure merogenesis, it is fixed through bolted connection between festival and the festival.
The steel structure supporting device for the fully-recycled assembled rectangular pipe-jacking working well has the advantages that the H-shaped steel can be replaced by other types of steel, and the profiled steel plate can also be replaced by other types of steel structures.
The steel structure supporting device for the fully-recycled assembly type rectangular pipe-jacking working well has the preferred scheme that a rubber pad is filled between an inner hole and an outer hole.
Compared with the prior art, the beneficial effects of the utility model are that:
1) the supporting device of the rectangular top pipe well is fully recycled and reused, has high construction speed and can effectively inhibit the settlement of soil around a foundation pit. The device is provided with a prefabricated assembled hole and a prefabricated assembled back wall capable of providing enough counter force, and can effectively solve the technical defects that the hole needs to be cut on site and the back wall needs to be arranged independently in the prior art; the use requirement of the pipe jacking well is met.
2) The prefabricated hole is integrated with the supporting structure, and can be opened when in use and closed when not in use, so that the safety of the working well in the whole life cycle is guaranteed;
3) the prefabricated back wall comprises a hole, so that the counterforce required by jacking of the jacking pipe can be provided, the safety of a working well in the jacking process is guaranteed, and the prefabricated back wall can also be used as an entrance hole of a pipe jacking machine;
4) the method of filling the wall of the supporting structure with the foaming material can improve the compactness between the supporting structure and the soil body, greatly improve the waterproof performance of the structure and reduce the ground settlement.
5) The supporting structure is quick to install, convenient to construct, economical and environment-friendly, can be recycled completely, can greatly reduce the construction period and save the construction cost.
Drawings
FIG. 1 is a plan view of the present invention;
FIG. 2 is a schematic view of the structure A-A of FIG. 1;
FIG. 3 is a schematic view of the structure B-B of FIG. 1;
FIG. 4 is a schematic view of the connection structure of the H-shaped steel with the connecting piece a and the connecting piece b;
FIG. 5 is a schematic view of the transverse connection between H-shaped steels;
FIG. 6 is a schematic structural view of a profiled steel sheet;
FIG. 7 is a schematic view showing the connection between the profiled steel sheet and the H-shaped steel sheet;
FIG. 8 is a schematic view of the transverse connections between profiled steel sheets;
FIG. 9 is a schematic view of a corner post and a connector c;
FIG. 10 is a schematic view of the upper and lower connection of corner posts;
FIG. 11 is a schematic view of the connection between the corner post and the H-shaped steel;
FIG. 12 is a plan view showing the connection between the H-beam and the gusset;
FIG. 13 is a schematic view of a prefabricated opening support structure;
FIG. 14 is a schematic view of D1-D1 and D2-D2 in FIG. 13.
In the figure: 1. prefabricated ring beam, 2, prefabricated supporting structure, 3, prefabricated hole opening, 4, prefabricated back wall, 5 back covers, 6, H-shaped steel, 7, profiled steel sheet, 8, corner post, 9, corner brace, 10, embedded part a, 11, embedded part b, 12, connecting part a, 13, connecting part b, 14, plane steel bar, 15, angle steel, 16, connecting part c, 17, connecting plate, 18, inner hole opening structure, 19, outer hole opening structure, 20, soil facing side baffle plate a, 21, ribbed plate a, 22, outer hole opening flange plate, 23, soil facing side baffle plate b, 24 and ribbed plate b.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
A steel structure supporting device of a fully-recycled assembly type rectangular pipe-jacking working well is composed of a prefabricated ring beam 1, a prefabricated supporting structure 2, a prefabricated hole opening 3, a prefabricated back wall 4 and a back cover 5 through assembling;
the prefabricated supporting structure 2 is formed by connecting H-shaped steel 6, profiled steel sheets 7, corner columns 8 and corner supports 9 through bolts;
the prefabricated ring beam 1 is of a reinforced concrete structure, and the top surface of the prefabricated ring beam 1 is flush with the ground or slightly higher than the ground;
the prefabricated ring beam 1 is provided with an embedded part a10 used for being connected with the H-shaped steel 6 of the prefabricated supporting structure 2;
the prefabricated ring beam 1 is provided with an embedded part b11 used for being connected with a corner post 8 of the prefabricated supporting structure 2;
the wing plates of the H-shaped steel 6 are vertically arranged and used for fully utilizing the bending resistance of the H-shaped steel 6 and improving the bearing capacity of the structure;
connecting pieces a12 are welded on the upper part and the lower part of the H-shaped steel 6 at intervals, and the H-shaped steel 6 is spliced and connected with the profiled steel sheet 7 through the connecting pieces a 12;
welding a connecting piece b13 at one end of the H-shaped steel 6 to realize transverse connection between the H-shaped steel 6;
a circular connecting hole is reserved at the other end of the H-shaped steel 6 to realize the connection between the H-shaped steel 6 and the corner post 8;
reserving a circular connecting hole on the wing plate of the H-shaped steel 6 to realize the connection between the H-shaped steel 6 and the angle brace 9;
the left and right sides of the profiled steel sheet 7 are welded with plane steel bars 14 as connecting flanges, and transverse connection between the profiled steel sheets 7 is realized through bolts;
the upper part and the lower part of the profiled steel sheet 7 are welded with angle steels 15 as connecting flanges, and the profiled steel sheet 7 is connected with the H-shaped steel 6 through bolts;
the corner posts 8 are square steel pipes and are arranged at four corners of the rectangular working well; the connecting piece c16 is welded on the outer wall of the square steel pipe to realize the connection between the square steel pipe and the H-shaped steel 6; an inner sleeve is welded at one end of the square steel pipe, a pin bolt hole is reserved at the other end of the square steel pipe, a bolt eliminating hole matched with the bolt eliminating hole on the square steel pipe is reserved on the inner sleeve, and the connection between the upper square steel pipe and the lower square steel pipe is realized through a pin bolt;
the angle brace 9 is made of I-shaped steel, and connecting plates 17 are welded at two ends of the I-shaped steel and are used for being connected with the H-shaped steel 6 through bolts;
the prefabricated hole 3 consists of an inner hole structure 18 and an outer hole structure 19; the left end and the right end of the outer opening structure 19 are connected with the corner posts 8, the upper end of the outer opening structure is connected with the profiled steel sheet 7 of the prefabricated supporting structure 2, and the lower end of the outer opening structure is connected with the working well sealing bottom 5;
the outer cave mouth structure 19 is formed by welding H-shaped steel, an earth facing side baffle a20, a rib plate a21 and an outer cave mouth flange plate 22;
the inner hole structure 18 is formed by welding H-shaped steel, an earth facing side baffle b23 and a rib plate b 24;
the inner hole structure 18 is connected with the outer hole structure 19 through bolts, so that a prefabricated hole 3 is formed;
the flange plate 22 at the outer opening is connected with a fixed water stop strip, so that slurry leakage is avoided when the push bench is pushed in;
light compression-resistant concrete is filled between the ribbed slabs a21 and the ribbed slabs b24 in the prefabricated opening structure, and the prefabricated opening structure can be used as a prefabricated back wall 4;
and the back cover 5 is used for performing back cover construction of the working well in a mode of cast-in-place concrete.
The profiled steel sheet 7 is a steel sheet formed into a corrugated shape by mechanical pressing using a flat steel sheet.
The inner and outer hole flanges are formed by rolling steel plates, and the soil facing side baffle a20, the soil facing side baffle b23, the ribbed plate a21 and the ribbed plate b24 are all made of planar steel plates.
When the entrance to a cave is great, the interior entrance to a cave structure of integral type and outer entrance to a cave structure when heavier difficult installation, can divide the festival to the interior entrance to a cave structure of outer longitudinal direction, and it is fixed through bolted connection between festival and the festival.
The H-shaped steel 6 can be replaced by other types of steel, and the profiled steel sheet 7 can also be replaced by other types of steel structures.
A rubber pad is filled between the inner hole and the outer hole.
A construction method of a full-recovery assembly type rectangular pipe-jacking working well comprises the following steps:
1) construction prefabricated ring beam
Measuring and paying off in a construction site, and excavating a foundation trench to meet the requirement of prefabricated ring beam installation;
and laying a cushion layer, placing the prefabricated ring beam to the position of the foundation trench, and leveling, connecting and fixing.
2) Excavation supporting first section
Excavating a first layer of earthwork;
the earth excavation depth is matched with the height of the assembled first ring structure;
four corner posts and first ring H-shaped steel are respectively spliced and connected with the prefabricated ring beam, the corner posts are positioned at four corner positions of the rectangular working well, and the first ring H-shaped steel is tightly attached to the bottom surface of the prefabricated ring beam;
fixedly connecting the H-shaped steel with the corner post node through a bolt;
fixing a first ring-shaped profiled steel plate and first ring-shaped H-shaped steel through bolts, wherein the first ring-shaped profiled steel plate is positioned below the first ring-shaped H-shaped steel;
and installing a first layer of corner brace, and fixing the first layer of corner brace and the first ring H-shaped steel through bolts.
Grouting and filling construction is carried out behind the first ring supporting structure;
and (3) excavating earthwork, assembling corner columns, H-shaped steel, profiled steel sheets and angle braces in turn, and completing assembling connection and grouting construction until an excavation support reaches the top surface of a back wall (or a hole).
3) Second section of excavation support
Excavating earthwork;
mounting corner posts at four corners, assembling a prefabricated opening structure at the opening side, assembling a prefabricated back wall structure at the back wall side, assembling H-shaped steel and profiled steel plates at the other two sides, fixedly connecting all structures with the intersected nodes of the corner posts through bolts, and fixedly connecting all structures with the previous ring structure through bolts;
and (4) mounting a corner support, and fixing the corner support and the H-shaped steel of the corresponding ring through bolts.
Grouting and filling construction is carried out behind the supporting structure;
sequentially and alternately excavating an earth assembling hole structure, a back wall structure, H-shaped steel, profiled steel sheets, corner columns and corner supports, and completing assembling connection and grouting construction until an excavation support reaches the elevation of the bottom surface of a vertical shaft;
4) back cover
Pouring the bottom sealing concrete in situ, and ensuring that the four-corner upright posts are embedded in the bottom sealing concrete;
5) pipe jacking construction
Jacking or receiving construction of the jacking pipe is carried out;
6) backfill recovery
And (4) dismantling the supporting structure layer by layer from the bottom of the well upwards, backfilling, and tamping until the structure is completely recovered and backfilled.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (5)
1. The utility model provides a retrieve assembled rectangle push pipe working well steel construction supporting device entirely, its characterized in that: the supporting device is formed by assembling a prefabricated ring beam, a prefabricated supporting structure, a prefabricated hole, a prefabricated back wall and a back cover;
the prefabricated supporting structure is formed by connecting H-shaped steel, profiled steel plates, corner columns and corner braces through bolts;
the prefabricated ring beam is of a reinforced concrete structure, and the top surface of the prefabricated ring beam is flush with the ground or slightly higher than the ground;
the prefabricated ring beam is provided with an embedded part a used for being connected with H-shaped steel of a prefabricated supporting structure;
the prefabricated ring beam is provided with an embedded part b used for being connected with a corner post of the prefabricated supporting structure;
the wing plates of the H-shaped steel are vertically arranged and used for fully utilizing the bending resistance of the H-shaped steel and improving the bearing capacity of the structure;
connecting pieces a are welded on the upper part and the lower part of the H-shaped steel at intervals, and the H-shaped steel is spliced and connected with the profiled steel sheet through the connecting pieces a;
welding a connecting piece b at one end of the H-shaped steel to realize transverse connection between the H-shaped steel;
reserving a circular connecting hole at the other end of the H-shaped steel to realize the connection between the H-shaped steel and the corner column;
reserving a circular connecting hole on the H-shaped steel wing plate to realize the connection between the H-shaped steel and the corner brace;
the left and right sides of the profiled steel sheet are welded with plane steel bars as connecting flanges, and transverse connection between profiled steel sheets is realized through bolts;
angle steel serving as a connecting flange is welded on the upper part and the lower part of the profiled steel sheet, and the profiled steel sheet is connected with the H-shaped steel through bolts;
the corner columns are square steel pipes and are arranged at four corners of the rectangular working well; the connecting piece c is welded on the outer wall of the square steel pipe, so that the connection between the square steel pipe and the H-shaped steel is realized; an inner sleeve is welded at one end of the square steel pipe, a pin bolt hole is reserved at the other end of the square steel pipe, a pin bolt hole matched with the pin bolt hole on the square steel pipe is reserved on the inner sleeve, and the connection between the upper square steel pipe and the lower square steel pipe is realized through a pin bolt;
the angle brace adopts I-shaped steel, and connecting plates are welded at two ends of the I-shaped steel and are used for being connected with the H-shaped steel through bolts;
the prefabricated hole comprises an inner hole structure and an outer hole structure; the left end and the right end of the outer opening structure are connected with the corner posts, the upper end of the outer opening structure is connected with a profiled steel sheet of the prefabricated supporting structure, and the lower end of the outer opening structure is connected with the bottom seal of the working well;
the outer opening structure is formed by welding H-shaped steel, an earth facing side baffle plate a, a rib plate a and an outer opening flange plate;
the inner hole structure is formed by welding H-shaped steel, an earth facing side baffle b and a rib plate b;
the inner opening structure is connected with the outer opening structure through bolts, so that a prefabricated opening is formed;
the outer hole flange is connected with a fixed water stop strip, so that slurry leakage is avoided when the push bench is pushed in;
filling light compression-resistant concrete between the ribbed slabs a and the ribbed slabs b in the prefabricated opening structure, and using the prefabricated rear back wall;
and the back cover adopts a mode of casting concrete in situ to carry out back cover construction of the working well.
2. The steel structure supporting device for the fully-recovered assembled rectangular pipe-jacking working well according to claim 1, which is characterized in that: the profiled steel sheet is a steel sheet with corrugations formed by mechanical pressing by adopting a plane steel sheet.
3. The steel structure supporting device for the fully-recovered assembled rectangular pipe-jacking working well according to claim 1, which is characterized in that: the inner and outer hole flange plates are formed by rolling steel plates, and the soil facing side baffle plate a, the soil facing side baffle plate b, the rib plate a and the rib plate b are all made of planar steel plates.
4. The steel structure supporting device for the fully-recovered assembled rectangular pipe-jacking working well according to claim 1, which is characterized in that: the H-shaped steel is replaced by the section steel except the H-shaped steel.
5. The steel structure supporting device for the fully-recovered assembled rectangular pipe-jacking working well according to claim 1, which is characterized in that: a rubber pad is filled between the inner hole and the outer hole.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020265021.7U CN212428824U (en) | 2020-03-06 | 2020-03-06 | Steel structure supporting device of full-recovery assembly type rectangular pipe-jacking working well |
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| CN202020265021.7U CN212428824U (en) | 2020-03-06 | 2020-03-06 | Steel structure supporting device of full-recovery assembly type rectangular pipe-jacking working well |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111236952A (en) * | 2020-03-06 | 2020-06-05 | 沈阳建筑大学 | Full-recovery assembly type rectangular pipe-jacking working well steel structure supporting device and construction method of working well |
| CN114278306A (en) * | 2021-12-13 | 2022-04-05 | 中铁上海工程局集团市政环保工程有限公司 | Micro pipe jacking operation working well supporting structure and construction process thereof |
-
2020
- 2020-03-06 CN CN202020265021.7U patent/CN212428824U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111236952A (en) * | 2020-03-06 | 2020-06-05 | 沈阳建筑大学 | Full-recovery assembly type rectangular pipe-jacking working well steel structure supporting device and construction method of working well |
| CN111236952B (en) * | 2020-03-06 | 2024-07-16 | 沈阳建筑大学 | Steel structure supporting device for fully-recovered assembled rectangular pipe-jacking working well and construction method of working well |
| CN114278306A (en) * | 2021-12-13 | 2022-04-05 | 中铁上海工程局集团市政环保工程有限公司 | Micro pipe jacking operation working well supporting structure and construction process thereof |
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