CN209838407U - Do benefit to shaft structure of horse head door safety construction - Google Patents
Do benefit to shaft structure of horse head door safety construction Download PDFInfo
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- CN209838407U CN209838407U CN201920623453.8U CN201920623453U CN209838407U CN 209838407 U CN209838407 U CN 209838407U CN 201920623453 U CN201920623453 U CN 201920623453U CN 209838407 U CN209838407 U CN 209838407U
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Abstract
The utility model discloses a shaft structure which is beneficial to the safe construction of a ingate, comprising a vertical column, a crown beam, a reinforcing beam I, a reinforcing beam II and a shaft ring beam; the inner wall sides at two sides in the radial direction of the transverse channel are provided with a plurality of stand columns, and the tops of the stand columns at the same inner wall side in the transverse channel are connected through crown beams; the reinforcing cross beam I and the reinforcing cross beam II cross the transverse channel along the radial direction, and the axial end parts of the reinforcing cross beam I and the reinforcing cross beam II are connected with the crown beam on the corresponding side; the vertical shaft is positioned above the station and communicated with the transverse channel, and the reinforcing cross beam I and the reinforcing cross beam II are disconnected at the vertical shaft; and a well ring beam is arranged in the vertical shaft, and the disconnected ends of the reinforcing beam I and the reinforcing beam II are connected with the well ring beam. The utility model discloses a stand, crown beam, well ring beam form holistic atress system, can make in the cross passage shaft both sides web beam's atress reach equilibrium, ensure the safety that the horse head door abolished, do benefit to and solve the shaft and be located the problem of abolishing horse head door safety construction directly over the station.
Description
Technical Field
The utility model relates to a foundation construction technical field, concretely relates to do benefit to shaft structure of horse head door safety construction.
Background
The shallow buried underground excavation station is mostly constructed by adopting a PBA (Poly Butylene glycol Acrylonitrile) construction method, temporary construction vertical shafts and transverse channels are mostly arranged on two sides of a station structure, after the construction of small pilot tunnels of the upper layer and the lower layer of the station and a beam column system is finished, the station is initially supported and buckled, reinforcing cross beams are constructed in the transverse channels before buckling and arching, an integral stress system is formed, and the construction safety is ensured.
Along with the development of cities, urban roads are more and more densely built, stations of newly-built lines are mostly located in population concentration areas, the stations are located below main roads, temporary fields are more and more difficult to build in densely populated places, in order to enable projects to be smoothly implemented, a vertical shaft can be moved to the position right above the stations according to site occupation conditions, after the vertical shaft is moved, a reinforcing cross beam is broken at the position of the vertical shaft, discontinuity exists, when a primary support buckle is buckled to break a horse head door, the vertical shaft is subjected to the condition of breaking primary supports on four sides, the construction risk is increased,
although the prior art is equipped with interim stand in the well, has ensured the security of shaft excavation, but does not consider the big construction measure of broken horse head door risk when just propping up the knot and encircleing, has following shortcoming: the strengthening beam is discontinuous in the shaft, the soil pressure on two sides is unbalanced, and the horizontal stability of the strengthening beam cannot be ensured.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve is: the shaft is located the station directly over when the horse head door construction is abolished in the construction, and web beam is discontinuous in the shaft, and both sides soil pressure is uneven, and the web beam horizontal stability that can't guarantee has great potential safety hazard, the utility model provides a solve the above-mentioned problem one kind do benefit to horse head door safety construction's shaft structure.
The utility model discloses a following technical scheme realizes:
a vertical shaft structure beneficial to safe construction of a ingate comprises upright columns, crown beams, a reinforcing cross beam I, a reinforcing cross beam II and a well ring beam; the inner wall sides at two sides in the radial direction of the transverse channel are provided with a plurality of stand columns, and the tops of the stand columns at the same inner wall side in the transverse channel are connected through crown beams; the reinforcing cross beam I and the reinforcing cross beam II cross the transverse channel along the radial direction, and the axial end parts of the reinforcing cross beam I and the reinforcing cross beam II are connected with the crown beam on the corresponding side; the vertical shaft is positioned above the station and communicated with the transverse channel, and the reinforcing cross beam I and the reinforcing cross beam II are disconnected at the vertical shaft; and a well ring beam is arranged in the vertical shaft, and the disconnected end parts of the reinforcing beam I and the reinforcing beam II are connected with the well ring beam.
Furthermore, the well ring beam comprises a rectangular frame structure formed by four support columns and ring arms, the ring arm on one side of the frame structure in the length direction is connected with the disconnected ends of the reinforcing cross beam I and the reinforcing cross beam II on the side, and the ring arm on the other side of the frame structure in the length direction is connected with the disconnected ends of the reinforcing cross beam I and the reinforcing cross beam II on the side; the well ring beam also comprises two reinforcing columns and a partition, the two axial ends of the partition are respectively connected with the ring arms on the two radial sides of the frame structure, and the reinforcing columns are arranged at the joints of the partition and the ring arms; the support columns, the ring arms, the reinforcing columns and the partitions are all of a steel bar concrete pouring structure.
Further, II bottom surfaces of strengthening beam I and strengthening beam are the arcwall face structure with detaining the arch adaptation, along strengthening beam I or on the cross-section of II axis directions of strengthening beam, the base of strengthening beam I and strengthening beam II is the circular arc structure of three-section of end to end connection in proper order: the first arc section, the second arc section and the third arc section, and the first reinforcing beam or the second reinforcing beam is disconnected at the vertex corresponding to the first arc section or the third arc section and used for the vertical shaft to penetrate through.
Furthermore, stand and hat roof beam, hat roof beam and strengthening beam I, strengthening beam II, all rivet mutually through the reinforcing bar between strengthening beam I, strengthening beam II and the well ring roof beam.
Furthermore, lacing wires in the well ring beam, the reinforcing beam I and the reinforcing beam II are arranged in a quincunx shape.
Furthermore, a bar base is arranged in the transverse channel, and the upright posts are fixed on the bar base.
The utility model discloses have following advantage and beneficial effect:
the utility model balances the reinforcing beam of the transverse channel at the two sides of the vertical shaft by arranging concrete frame systems such as the shaft ring beam in the vertical shaft; meanwhile, concrete stand columns are arranged at the ends of the two sides of the transverse channel to support the crown beams, the crown beams support the reinforcing cross beam to form an integral stress system, the initial buckling arch breaks the ingate below the reinforcing cross beam, and the construction safety is guaranteed.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:
fig. 1 is a schematic view of a support structure for shaft excavation of a comparative example, in which 10 denotes a shaft and 20 denotes a reinforcing beam;
FIG. 2 is a schematic view of the cross-sectional structure of the present invention in the vertical direction;
fig. 3 is a schematic top view of the well ring beam of the present invention;
FIG. 4 is a schematic view of the cross-sectional structure of the present invention in the horizontal direction;
FIG. 5 is a schematic view of the structure of the reinforcing beam and the well ring beam of the present invention;
FIG. 6 is a schematic view of the reinforcement distribution structure of the reinforcement beam of the present invention;
FIG. 7 is a schematic view of the distribution structure of the reinforcement bars of the well ring beam of the present invention;
fig. 8 is the utility model discloses earlier stage construction structure schematic diagram.
Reference numbers and corresponding part names in the drawings: 1-upright column, 2-crown beam, 3-reinforcing beam I, 4-reinforcing beam II, 5-well ring beam, 51-support column, 52-ring arm, 53-reinforcing column, 54-partition, 6-transverse channel, 7-vertical shaft, 8-bar foundation, 9-ground and 11-temporary upright column.
Detailed Description
To make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the following examples and drawings, and the exemplary embodiments and descriptions thereof of the present invention are only used for explaining the present invention, and are not intended as limitations of the present invention.
Examples
The embodiment provides a vertical shaft structure beneficial to safe construction of a ingate, which comprises an upright post 1, a crown beam 2, a reinforcing cross beam I3, a reinforcing cross beam II 4 and a well ring beam 5; a plurality of upright posts 1 are arranged on the inner wall sides at two radial sides of the transverse passage 6, and the tops of the upright posts 1 at the same inner wall side in the transverse passage 6 are connected through crown beams 2; the reinforcing cross beam I3 and the reinforcing cross beam II 4 cross the transverse channel 6 along the radial direction, and the axial end parts of the reinforcing cross beam I3 and the reinforcing cross beam II 4 are connected with the crown beam 2 on the corresponding side; the vertical shaft 7 is positioned above the station and communicated with the transverse channel 6, and the reinforcing cross beam I3 and the reinforcing cross beam II 4 are disconnected at the vertical shaft 7; and a well ring beam 5 is arranged in the vertical shaft 7, and the disconnected end parts of the reinforcing beam I3 and the reinforcing beam II 4 are connected with the well ring beam 5.
The well ring beam 5 comprises a rectangular frame structure formed by four support columns 51 and ring arms 52, the ring arm 52 on one side of the frame structure in the length direction is connected with the disconnected ends of the reinforcing cross beam I3 and the reinforcing cross beam II 4 on the side, and the ring arm 52 on the other side of the frame structure in the length direction is connected with the disconnected ends of the reinforcing cross beam I3 and the reinforcing cross beam II 4 on the side; the well ring beam 5 further comprises two reinforcing columns 53 and a partition 54, the two axial ends of the partition 54 are respectively connected with the ring arms 52 on the two radial sides of the frame structure, and the reinforcing columns 53 are arranged at the joints of the partition 54 and the ring arms 52; the support columns 51, the ring arms 52, the reinforcing columns 53 and the partitions 54 are all of a steel bar-concrete pouring structure. As shown in fig. 3, the ring arms 52 on the well ring beam 5 include JHL1, JHL2, JHL3, and JHL 4; wherein the partition 54 between JHL1 and JHL2 is labeled JHL 4; disconnected ends of the reinforcing beam I3 and the reinforcing beam II 4 are respectively connected on the sides of JHL1 and JHL2, the reinforcing beam I3 is positioned between JHL3 and JHL4, and the reinforcing beam II 4 is positioned between two JHL 4. JHL1 and JHL2 were 350mm in width, JHL3 was 800mm in width, and JHL4 was 600mm in width.
The bottom surfaces of the I3 and II 4 reinforcing cross beams are arc-shaped surface structures matched with the buckling arches, and on the cross section of the I3 or II 4 axial directions of the reinforcing cross beams, the bases of the I3 and II 4 reinforcing cross beams are three-section arc-shaped structures connected end to end in sequence: arc I, arc II and arc III, strengthening beam I3 or strengthening beam II 4 are used for shaft 7 to pass at the summit department that arc I corresponds disconnection. The arc length and the circular angle of the arc section I and the arc section III are equal, the circular angle is theta 3 ═ 96 degrees, and R1 ═ R2 ═ 6800 mm; the central angles of the arc section end points at the break position of the arc section I and the corresponding side are respectively theta 1-50 DEG and theta 2-9 DEG, the central lines of the arc sections II are used as axes and are in axial symmetry distribution,
upright 1 and hat roof beam 2, hat roof beam 2 and strengthening beam I3, strengthening beam II 4, all rivet each other through the reinforcing bar between strengthening beam I3, strengthening beam II 4 and the well ring roof beam 5. Lacing wires in the well ring beam 5, the reinforcing beam I3 and the reinforcing beam II 4 are arranged in a quincunx shape; a bar base 8 is arranged in the transverse channel 6, and the upright post 1 is fixed on the bar base 8.
Based on the structure provided by the embodiment, the construction method for carrying out vertical shaft excavation comprises the following steps:
1. constructing a vertical shaft by adopting an inverted hanging shaft wall method, inversely manufacturing a temporary upright post in the vertical shaft, pouring the temporary upright post once according to 2-3 m, and when excavating to the upper part of a transverse channel vault and the upper part of a temporary inverted arch, manufacturing a ring beam and pouring concrete;
2. after the vertical shaft is excavated to the designed bottom elevation, a ingate construction transverse passage is broken, and small pilot tunnels on the upper layer and the lower layer of the ingate construction station are broken after the construction of the transverse passage is finished;
3. after the pilot tunnel is excavated, constructing a station inner beam and a station inner column system, constructing a transverse passage inner strip foundation, and embedding a cross beam lower stand column reinforcing steel bar;
4. erecting a scaffold in the transverse passage and the vertical shaft, constructing vertical columns (2450X 4000mm) from bottom to top, reserving crown beam reinforcing steel bars, breaking original temporary vertical columns (350X 600mm) at the ring beam of the shaft in the vertical shaft, binding the ring beam reinforcing steel bars of the shaft, reserving reinforcing beam reinforcing steel bars, and pouring concrete;
5. constructing a transverse channel inner crown beam, reserving reinforcing steel bars of the reinforcing cross beam, and pouring concrete;
6. binding reinforcing beam steel bars after the well ring beam concrete reaches the design strength, closing the mold and pouring concrete;
7. and (3) breaking primary support at one side of the transverse channel after the reinforced beam concrete reaches the design strength, and performing primary support arch buckling at one side.
In conclusion, the invention can effectively control the ground settlement, increase the stability of the arch bridgehead door of the primary support buckle, and ensure the construction safety.
Comparative example:
a scheme that is implemented recently:
a shaft of a certain station of Beijing X line is also positioned right above the station, 4 temporary upright columns (steel bars and net sprayed concrete) are arranged in the shaft, a reinforcing beam balance system is not arranged in the shaft, the reinforcing beam is disconnected at the shaft and respectively falls on primary support structures at two sides, an edge pile and plain concrete are still backfilled below a crown beam to serve as a support, a strip foundation in a transverse channel is arranged below the edge pile, the crown beam is positioned above the edge pile, the reinforcing beam is positioned above the crown beam, and primary support buckling and arching are carried out after the construction of the reinforcing beam is completed. As shown in fig. 1.
Although the scheme similar to the realization is successfully implemented, the settlement amount during the initial support buckling arch period during construction is too large, so that the whole pavement is sunk, and a large amount of manpower and material resources are spent on repairing the ground road during construction and after construction is completed, so that great economic loss is caused.
The invention is further improved to really realize a strong opening, and all the frame systems such as the upright posts, the ring beams and the like are matched for use and are all of reinforced concrete structures; and in the practical use process, the stress is balanced after calculation, the problem of stress conversion when the fore supporting arch breaks the ingate can be solved, and the safety of breaking the ingate when the fore supporting arch breaks the ingate is ensured.
The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above description is only the embodiments of the present invention, and is not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (6)
1. A vertical shaft structure beneficial to safe construction of a ingate is characterized by comprising upright columns (1), crown beams (2), a reinforcing cross beam I (3), a reinforcing cross beam II (4) and a well ring beam (5); the inner wall sides at two radial sides of the transverse channel (6) are provided with a plurality of upright columns (1), and the tops of the upright columns (1) at the same inner wall side in the transverse channel (6) are connected through crown beams (2); the reinforcing cross beam I (3) and the reinforcing cross beam II (4) cross the transverse channel (6) along the radial direction, and the axial end parts of the reinforcing cross beam I (3) and the reinforcing cross beam II (4) are connected with the crown beam (2) on the corresponding side; the vertical shaft (7) is positioned above the station and communicated with the transverse passage (6), and the reinforcing cross beam I (3) and the reinforcing cross beam II (4) are disconnected at the vertical shaft (7); and a well ring beam (5) is arranged in the vertical shaft (7), and the disconnected ends of the reinforcing beam I (3) and the reinforcing beam II (4) are connected with the well ring beam (5).
2. The shaft structure facilitating safe horse-head door construction according to claim 1, wherein the shaft ring beam (5) comprises a rectangular frame structure formed by four support columns (51) and ring arms (52), the ring arm (52) on one side of the frame structure in the length direction is connected with the broken ends of the reinforcing cross beam I (3) and the reinforcing cross beam II (4) on the side, and the ring arm (52) on the other side of the frame structure in the length direction is connected with the broken ends of the reinforcing cross beam I (3) and the reinforcing cross beam II (4) on the side; the well ring beam (5) further comprises two reinforcing columns (53) and a partition (54), the two axial ends of the partition (54) are respectively connected with the ring arms (52) on the two radial sides of the frame structure, and the reinforcing columns (53) are arranged at the connection positions of the partition (54) and the ring arms (52); the supporting columns (51), the ring arms (52), the reinforcing columns (53) and the partitions (54) are all of steel bar concrete pouring structures.
3. The vertical shaft structure beneficial to safe horse head door construction according to claim 1, is characterized in that the bottom surfaces of the I (3) and II (4) reinforcing beams are arc-shaped surface structures matched with buckling arches, and the bottom edges of the I (3) and II (4) reinforcing beams are three-section arc-shaped structures sequentially connected end to end on the section along the axis direction of the I (3) or II (4) reinforcing beams: arc I, arc II and arc III, strengthening beam I (3) or strengthening beam II (4) are used for shaft (7) to pass at the summit department that arc I or arc III correspond.
4. The vertical shaft structure beneficial to safe horse-head door construction according to claim 1, wherein the upright columns (1) and the crown beams (2), the crown beams (2) and the reinforcing cross beams I (3) and II (4), and the reinforcing cross beams I (3), II (4) and the well ring beam (5) are riveted with each other through reinforcing steel bars.
5. A vertical shaft structure beneficial to safe ingate construction according to claim 1, wherein the lacing wires in the well ring beam (5), the reinforcing beam I (3) and the reinforcing beam II (4) are arranged in a quincunx shape.
6. Shaft structure facilitating the safe construction of ingate according to claim 1, characterized in that the inside of the transverse channel (6) is provided with a bar base (8), and the upright (1) is fixed on the bar base (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920623453.8U CN209838407U (en) | 2019-04-29 | 2019-04-29 | Do benefit to shaft structure of horse head door safety construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920623453.8U CN209838407U (en) | 2019-04-29 | 2019-04-29 | Do benefit to shaft structure of horse head door safety construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209838407U true CN209838407U (en) | 2019-12-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920623453.8U Active CN209838407U (en) | 2019-04-29 | 2019-04-29 | Do benefit to shaft structure of horse head door safety construction |
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| Country | Link |
|---|---|
| CN (1) | CN209838407U (en) |
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2019
- 2019-04-29 CN CN201920623453.8U patent/CN209838407U/en active Active
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