CN116104521A - Soft soil layer deep foundation pit underground comprehensive pipe gallery supporting structure and construction method thereof - Google Patents
Soft soil layer deep foundation pit underground comprehensive pipe gallery supporting structure and construction method thereof Download PDFInfo
- Publication number
- CN116104521A CN116104521A CN202211660387.4A CN202211660387A CN116104521A CN 116104521 A CN116104521 A CN 116104521A CN 202211660387 A CN202211660387 A CN 202211660387A CN 116104521 A CN116104521 A CN 116104521A
- Authority
- CN
- China
- Prior art keywords
- arc
- area
- piles
- subway line
- support
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000010276 construction Methods 0.000 title claims abstract description 46
- 239000002689 soil Substances 0.000 title claims abstract description 35
- 229910000831 Steel Inorganic materials 0.000 claims description 19
- 239000010959 steel Substances 0.000 claims description 19
- 238000004873 anchoring Methods 0.000 claims description 11
- 230000002093 peripheral effect Effects 0.000 claims description 6
- 230000007547 defect Effects 0.000 description 4
- 230000002411 adverse Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000002787 reinforcement Effects 0.000 description 3
- FGUUSXIOTUKUDN-IBGZPJMESA-N C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 Chemical compound C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 FGUUSXIOTUKUDN-IBGZPJMESA-N 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/003—Linings or provisions thereon, specially adapted for traffic tunnels, e.g. with built-in cleaning devices
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/14—Lining predominantly with metal
- E21D11/18—Arch members ; Network made of arch members ; Ring elements; Polygon elements; Polygon elements inside arches
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
- E21D21/008—Anchoring or tensioning means
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- Architecture (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Civil Engineering (AREA)
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
Abstract
The utility model provides a soft soil layer deep basal pit utility tunnel supporting construction, includes subway line area (1), its characterized in that: the underground pipeline underground construction system is reasonable in structure, adopts the arc-shaped protection arches as a protection main structure, shares structures above the underground pipeline area, backfill and construction machines to loads below to the pile driving area outside the underground pipeline area, and maximally ensures the safety of the underground pipeline.
Description
Technical Field
The invention relates to an underground comprehensive pipe gallery supporting structure and a construction method thereof, in particular to a soft soil layer deep foundation pit underground comprehensive pipe gallery supporting structure and a construction method thereof, and belongs to the technical field of underground engineering.
Background
With the development of cities in recent years, more and more cities build subways and underground comprehensive pipe racks underground, and the subways and the underground comprehensive pipe racks are crisscrossed, so that the subways and the underground comprehensive pipe racks are inevitably needed to cross built subway lines or build subway lines. Urban underground rail transit is also rapidly developed, subway lines in construction and operation are continuously increased and are more and more dense, underground traffic networks are gradually formed, and it is very important to ensure stability of soil bodies of the subway lines and safety of the subway lines. More importantly, some subway lines pass through soft soil layers with large water content such as rivers, lakes and the like, structures such as subway tunnel segments and the like positioned below are very sensitive to the stress change of soil bodies, the construction difficulty of the crossing subway lines is remarkable, and the construction difficulty is one of important technical barriers for restricting newly-built subway lines and underground comprehensive pipe galleries.
If the deep foundation pit crossing the subway line is constructed by adopting a traditional common construction method, the stability of the soil body of the subway line and the safety of the subway line cannot be guaranteed, particularly, the construction difficulty is multiplied for the construction of the subway line of the deep foundation pit or the underground comprehensive pipe gallery, the traditional underground comprehensive pipe gallery structure has larger potential safety hazards, the supporting piles cannot effectively and fixedly support the part crossing the subway line below, meanwhile, the bearing capacity of the part crossing the subway line below is limited, and the soil body stressed structure of the subway line below is extremely easy to damage by adopting the traditional construction method. The construction difficulty of the deep foundation pit support crossing the subway line cannot be solved in the past, and the technical problems are solved by the deep foundation pit support structure which is convenient to construct, good in construction safety and capable of guaranteeing the safety and stability of the subway line.
Disclosure of Invention
The invention aims at solving the defects and defects that the stability of a soil body of a subway line and the safety of the subway line cannot be guaranteed by a deep foundation pit crossing the subway line, the construction difficulty is high, the traditional underground comprehensive pipe gallery structure has high potential safety hazards, the supporting piles cannot effectively fix and support the part crossing the underground line below, and the safety performance is poor.
The invention provides a construction method of the soft soil layer underground comprehensive pipe gallery supporting structure, which aims at solving the defects and defects that the existing underground comprehensive pipe gallery deep foundation pit crossing a subway line is relatively difficult to construct, the stability of the soil body of the subway line and the safety of the subway line cannot be guaranteed, the soil body stress structure of the lower subway line is easily damaged, the construction safety is poor, the construction is reasonable, the construction is simple and convenient, the safety of the lower subway line is guaranteed, the construction difficulty of the deep foundation pit supporting of the underground comprehensive pipe gallery crossing the subway line is well solved, and the construction quality is improved.
In order to achieve the first object, the present invention provides the following technical solutions: the utility model provides a soft soil layer deep basal pit utility tunnel supporting construction, includes subway line area, its characterized in that: the underground deep foundation pit crossing construction area is arranged right above the subway line area, the left piling area is arranged on the periphery of one side of the subway line area, the right piling area is arranged on the periphery of the other side of the subway line area, one row or a plurality of rows of concrete piles are respectively arranged in the left piling area and the right piling area, the concrete piles on the same side are poured and arranged into an integral structure, one or a plurality of arc-shaped protection arches distributed side by side across the subway line area are erected above the concrete piles on the left side and the concrete piles on the right side, the arc-shaped arches of the arc-shaped protection arches are erected along the crossing direction of the underground comprehensive pipe gallery, the adjacent arc-shaped protection arches are connected and fixed through arc-shaped connecting members, a plurality of equidistant arc-shaped window holes are formed by the arc-shaped protection arches and the arc-shaped connecting members in a crisscross mode, support pile fixing seats are fixedly arranged on the arc-shaped window holes along the distribution direction of the two rows of mutually parallel support piles, the support piles are vertically fixed on the support pile fixing seats, two rows of support piles are vertically fixed on the arc-shaped protection arches or the arc-shaped connecting members, and a continuous pipe wall is arranged between the support piles on the same side through the concrete pouring direction.
Further, a plurality of arc steel frames which are fixedly spliced are erected on the soil body at the periphery of the upper side of the subway line area, a bottom template is installed on the arc steel frames, and the span of the erected arc steel frames is larger than the maximum width of the subway line area.
Further, the outside of concrete pile is provided with the tip anchor seat, and the tip of arc protection arch is fixed on the tip anchor seat, and the inside of tip anchor seat is provided with the stretch-draw hole, and Zhang Lakong's outer end is provided with the stretch-draw anchor seat.
Further, the inside of arc protection arch is provided with many prestressing steel bars or prestressing steel cable, and the span of arc protection arch is greater than the maximum width in subway line area.
Further, the support pile fixing seat comprises an upper fixing frame, a lower fixing frame, a counter-pulling screw rod and a flange fixing seat, wherein the upper fixing frame is positioned on the upper portion of the arc-shaped protection arch and the arc-shaped connecting member, the lower fixing frame is positioned at the bottom of the arc-shaped protection arch and the arc-shaped connecting member, the upper fixing frame and the lower fixing frame are fixedly connected through the counter-pulling screw rod and the locking nut, the flange fixing seat is fixedly arranged on the upper fixing frame, and the support pile is vertically fixed on the flange fixing seat.
Furthermore, the lower part or the middle part of the support pile is fixedly connected with the arc-shaped protection arch or the arc-shaped connecting member through the fixed diagonal brace, and the top ends of the support piles positioned on the same side are fixedly provided with crown beams which are horizontally distributed.
Further, a horizontal supporting rod is fixedly arranged between the two rows of parallel supporting piles.
Further, a backfill area is arranged on the arc surface of the upper surface of the arc-shaped protection arch, and the upper surface of the backfill area is arranged to be horizontal.
In order to achieve the second object, the present invention provides a technical solution as follows: the construction method of the underground comprehensive pipe rack supporting structure of the soft soil layer deep foundation pit is characterized by comprising the following steps of:
a. firstly, the peripheral outline of a subway line area is calibrated, and the specific position of a crossing railway line area is determined;
b. selecting a left piling area on the periphery of one side of the subway line area, and selecting a right piling area on the periphery of the other side of the subway line area;
c. then arranging one or more rows of concrete piles in the left piling area and the right piling area respectively, and arranging end anchoring seats on the outer sides of the concrete piles;
d. then, arc-shaped protection arches crossing the subway line area are erected on the concrete piles, and adjacent arc-shaped protection arches are fixedly connected through arc-shaped connecting members;
e. then a plurality of support pile fixing seats are fixedly arranged on the straight lines distributed along the two rows of support piles in the cambered surface window holes, the support piles are vertically fixed on the support pile fixing seats, and meanwhile, a pipe gallery continuous wall is arranged between the support piles positioned on the same side through concrete pouring;
f. and finally, a backfilling area is arranged on the arc surface of the upper surface of the arc-shaped protection arch, so that the support construction operation of the underground comprehensive pipe rack deep foundation pit is completed.
Furthermore, the top ends of the support piles positioned on the same side in the step e or the step f are fixedly provided with horizontally distributed crown beams, and horizontal support rods are fixedly arranged between two rows of parallel support piles.
The beneficial effects of the invention are as follows:
1. according to the invention, the arc-shaped protection arch is adopted as a protection main body structure, the deep foundation pit advanced support is carried out around the peripheral soil body of the subway line area, the structures above the subway line area, backfill soil and construction machines are used for sharing the load below to the piling area outside the bottom subway line area, and the safety of the subway line is ensured to the greatest extent.
2. According to the invention, the arc-shaped protection arches and the arc-shaped connecting members are crisscrossed to form a plurality of equidistant arc-shaped window holes, and the support piles with different crossing angles can be conveniently installed by selecting the hole positions of the different arc-shaped window holes, and the support piles are fixed on the arc-shaped protection arches through the support pile fixing seats, so that the problem of fixing and supporting the support piles of the underground comprehensive pipe gallery is effectively solved.
3. The underground comprehensive pipe rack deep foundation pit support device is reasonable in structure, fundamentally solves the construction problem of underground comprehensive pipe rack deep foundation pit support of a crossing subway line, avoids the damage to a soil body stress structure of the subway line below, avoids the adverse effect of exciting force generated in the construction process on the subway line, can cross the subway line at different angles according to the requirement, and improves the construction efficiency.
Drawings
Fig. 1 is a schematic end view of an arc-shaped protection arch according to the present invention.
Fig. 2 is a top view of the arc-shaped protective arch of the present invention.
Fig. 3 is a schematic view of the arc-shaped steel frame installed by the arc-shaped protection arch according to the present invention.
Fig. 4 is a schematic end view of the arc-shaped protection arch of the present invention after the support piles are disposed thereon.
Fig. 5 is a schematic view of the structure of the arc-shaped protection arch of the present invention after the supporting piles are arranged thereon.
Fig. 6 is a schematic view of a bottom fixing structure of the support pile of the present invention.
Fig. 7 is a schematic view of the construction of a piping lane continuous wall of the present invention.
Fig. 8 is a schematic structural view of the support structure of the present invention.
In the figure: subway line area 1, left pile driving area 2, right pile driving area 3, concrete piles 4, end anchor seats 5, arc-shaped protection arches 6, prestressed reinforcement 7, arc-shaped connecting members 8, arc-shaped window holes 9, arc-shaped steel frames 10, bottom templates 11, support pile fixing seats 12, support piles 13, fixing diagonal braces 14, crown beams 15, pipe gallery continuous walls 16, horizontal support rods 17, upper fixing frames 18, lower fixing frames 19, opposite-pulling screws 20, flange fixing seats 21 and backfill areas 22.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings and detailed description.
Referring to fig. 1 to 8, the utility tunnel supporting structure for a soft soil layer deep foundation pit of the present invention includes a subway line area 1, and is characterized in that: the underground deep foundation pit crossing construction area is arranged right above the subway line area 1, the left piling area 2 is arranged on the periphery of one side of the subway line area 1, the right piling area 3 is arranged on the periphery of the other side of the subway line area 1, one row or a plurality of rows of concrete piles 4 are respectively arranged in the left piling area 2 and the right piling area 3, the concrete piles 4 positioned on the same side are poured and arranged into an integral structure, one or a plurality of arc-shaped protection arches 6 distributed side by side across the subway line area 1 are erected above the concrete piles 4 positioned on the left side, the arc-shaped arches 6 are erected along the crossing direction of the underground comprehensive pipe gallery, adjacent arc-shaped protection arches 6 are fixedly connected through arc-shaped connecting members 8, a plurality of equidistant arc-shaped window holes 9 are formed by the arc-shaped protection arches 6 and the arc-shaped connecting members 8 in a crisscross manner, support pile fixing seats 12 are fixedly arranged on the arc-shaped window holes 9 along the distribution direction of the two rows of mutually parallel support piles 13, support piles 13 are vertically fixed on the support pile fixing seats 12, the arc-shaped protection arches 6 or the arc-shaped protection arches 6 are vertically arranged on the arc-shaped protection arches connecting members and the arc-shaped protection arches are fixedly arranged on the two sides of the support piles 13 and are vertically arranged between the support piles 13 through the two rows of the support piles 13.
A plurality of arc steel frames 10 which are fixedly spliced are erected on soil bodies on the periphery above the subway line area 1, a bottom template 11 is installed on each arc steel frame 10, and the span of each arc steel frame 10 is larger than the maximum width of the subway line area 1.
The outside of the concrete pile 4 is provided with an end anchoring seat 5, the end of the arc-shaped protection arch 6 is fixed on the end anchoring seat 5, the inside of the end anchoring seat 5 is provided with a tensioning hole, and the outer end of the Zhang Lakong is provided with a tensioning anchoring seat.
The inside of arc protection arch 6 is provided with many prestressing steel bars 7 or prestressing steel cable, and the span of arc protection arch 6 is greater than the maximum width of subway line area 1.
The support pile fixing seat 12 comprises an upper fixing frame 18, a lower fixing frame 19, a counter-pulling screw rod 20 and a flange fixing seat 21, wherein the upper fixing frame 18 is positioned on the upper portion of the arc-shaped protection arch 6 and the arc-shaped connecting member 8, the lower fixing frame 19 is positioned on the bottom of the arc-shaped protection arch 6 and the arc-shaped connecting member 8, the upper fixing frame 18 and the lower fixing frame 19 are fixedly connected through the counter-pulling screw rod 20 and a locking nut, the flange fixing seat 21 is fixedly arranged on the upper fixing frame 18, and the support pile 13 is vertically fixed on the flange fixing seat 21.
The lower part or the middle part of the support pile 13 is fixedly connected with the arc-shaped protection arch 6 or the arc-shaped connecting member 8 through the fixing diagonal brace 14, and the top ends of the support piles 13 positioned on the same side are fixedly provided with crown beams 15 which are horizontally distributed.
A horizontal supporting rod 17 is fixedly arranged between the two rows of parallel supporting piles 13.
The upper surface arc surface of the arc-shaped protection arch 6 is provided with a backfill area 22, and the upper surface of the backfill area 22 is arranged horizontally.
The construction method of the underground comprehensive pipe rack supporting structure of the soft soil layer deep foundation pit is characterized by comprising the following steps of:
a. firstly, the peripheral outline of a subway line area 1 is calibrated, and the specific position of a crossing railway line area 1 is determined;
b. then selecting a left piling area 2 at the periphery of one side of the subway line area 1, and selecting a right piling area 3 at the periphery of the other side of the subway line area 1;
c. one or more rows of concrete piles 4 are then arranged in the left pile driving region 2 and the right pile driving region 3, respectively, and end anchor seats 5 are arranged on the outer sides of the concrete piles 4;
d. then, arc-shaped protection arches 6 crossing the subway line area 1 are erected on the concrete piles 4, and the adjacent arc-shaped protection arches 6 are fixedly connected through arc-shaped connecting members 8;
e. then a plurality of support pile fixing seats 12 are fixedly arranged on the straight lines distributed along the two rows of support piles 13 in the cambered surface window holes 9, the support piles 13 are vertically fixed on the support pile fixing seats 12, and meanwhile, a pipe gallery continuous wall 16 is arranged between the support piles 13 positioned on the same side through concrete pouring;
f. and finally, a backfill area 22 is arranged on the arc surface of the upper surface of the arc-shaped protection arch 6, so that the support construction operation of the underground comprehensive pipe rack deep foundation pit is completed.
The top ends of the support piles 13 positioned on the same side in the step e or the step f are fixedly provided with horizontally distributed crown beams 15, and horizontal support rods 17 are fixedly arranged between two rows of parallel support piles 13.
Referring to fig. 1, the invention aims at performing advanced support of a deep foundation pit across an established subway line or a subway line under construction, can ensure the absolute safety of a subway line area 1 to the greatest extent, and avoids adverse effects on the subway line caused by performing underground utility tunnel construction right above the subway line area 1. The invention adopts the arc protection arch as the protection main body structure, which is equivalent to erecting the protection arch around the peripheral soil body of the subway line area 1, and the backfill weight, the supporting structure and the weight of the structures which are positioned above the subway line area 1 and span the area can not directly act on the subway line area 1, and the concrete structure is as follows:
the underground deep foundation pit crossing construction area is arranged right above the subway line area 1, the left piling area 2 is arranged on the periphery of one side of the subway line area 1, the right piling area 3 is arranged on the periphery of the other side of the subway line area 1, and the left piling area 2 and the right piling area 3 are arranged on the outer side of the subway line protection area and are symmetrically arranged. One row or a plurality of rows of concrete piles 4 are respectively arranged in the left piling area 2 and the right piling area 3, the concrete piles 4 are cast-in-place piles or concrete mixing piles, and the concrete piles 4 positioned on the same side are cast and arranged into an integral structure, so that the integral structure is used as an arc protection arch structure and a supporting foundation for bearing weight above.
One or more arc-shaped protection arches 6 which are distributed side by side are erected above the concrete piles 4 positioned on the left side and the concrete piles 4 positioned on the right side, the arc-shaped protection arches 6 span the subway line area 1, the arc-shaped arches of the arc-shaped protection arches 6 are erected along the crossing direction of the underground utility tunnel, and the span of the arc-shaped protection arches 6 is larger than the maximum width of the subway line area 1. The adjacent arc-shaped protection arches 6 are fixedly connected through the arc-shaped connecting members 8, and a plurality of arc-shaped protection arches 6 can be poured into an integral structure, so that the adverse effect of exciting force generated in the construction process on subway lines is avoided. The outside of the concrete pile 4 is provided with an end anchoring seat 5, the end of the arc-shaped protection arch 6 is fixed on the end anchoring seat 5, a tensioning hole is formed in the end anchoring seat 5, the outer end of the Zhang Lakong is provided with a tensioning anchoring seat, a plurality of prestressed reinforcements 7 or prestressed steel cables are arranged in the arc-shaped protection arch 6, and the prestressed reinforcements 7 or the prestressed steel cables are fixed on the end anchoring seat 5 after being prestressed and tensioned.
In order to facilitate the fixing of the support piles 13 on the arc-shaped protection arches 6, a plurality of equidistant arc-shaped window holes 9 are formed in the arc-shaped protection arches 6 and the arc-shaped connecting members 8 in a crisscross manner, and the arc-shaped window holes 9 are distributed vertically and horizontally along the arc surfaces. The cambered surface window hole 9 is fixedly provided with a support pile fixing seat 12 along the distribution direction of two rows of support piles 13 which are parallel to each other, the support pile fixing seat 12 comprises an upper fixing frame 18, a lower fixing frame 19, a counter-pulling screw rod 20 and a flange fixing seat 21, the upper fixing frame 18 is positioned on the upper parts of the cambered surface connecting members 8 and the cambered surface protecting arches 6, the lower fixing frame 19 is positioned on the bottoms of the cambered surface connecting members 8 and the cambered surface protecting arches 6, the upper fixing frame 18 and the lower fixing frame 19 are fixedly connected through the counter-pulling screw rod 20 and the locking nut, the flange fixing seat 21 is fixedly arranged on the upper fixing frame 18, and the support piles 13 are vertically fixed on the flange fixing seat 21.
The crossing subway line area 1 not only can vertically cross, but also can cross at a certain included angle with the axis of the subway line, and the supporting piles 13 with different crossing angles can be conveniently installed by selecting the hole positions of different cambered surface window holes 9. The support piles 13 are arranged in two rows parallel to each other, a pipe gallery continuous wall 16 is arranged between the support piles 13 on the same side through concrete pouring, crown beams 15 which are horizontally distributed are fixedly arranged at the top ends of the support piles 13 on the same side, and horizontal support rods 17 are fixedly arranged between the two rows of support piles 13 which are parallel to each other.
The construction method of the soft soil layer deep foundation pit underground comprehensive pipe rack supporting structure crossing the urban underground track line comprises the following specific steps: first, the peripheral outline of the subway line area 1 is calibrated, and the specific position of the crossing railway line area 1 is determined. And then selecting a left piling area 2 at the periphery of one side of the subway line area 1, and selecting a right piling area 3 at the periphery of the other side of the subway line area 1. One or more rows of concrete piles 4 are then arranged in the left pile driving area 2 and the right pile driving area 3, respectively, and end anchor seats 5 are arranged outside the concrete piles 4. Then, arc-shaped protection arches 6 crossing the subway line area 1 are erected on the concrete piles 4, and the adjacent arc-shaped protection arches 6 are fixedly connected through arc-shaped connecting members 8. Then a plurality of support pile fixing seats 12 are fixedly arranged on the straight lines distributed along the two rows of support piles 13 in the cambered surface window holes 9, the support piles 13 are vertically fixed on the support pile fixing seats 12, and meanwhile, a pipe gallery continuous wall 16 is arranged between the support piles 13 positioned on the same side through concrete pouring. And finally, a backfill area 22 is arranged on the arc surface of the upper surface of the arc-shaped protection arch 6, so that the advanced support construction operation of the deep foundation pit of the underground comprehensive pipe gallery is completed.
The foregoing is a further detailed description of the present invention in connection with the specific embodiments, and it is not intended to limit the practice of the invention to such descriptions, but rather it is intended to cover all such alternatives, modifications, and variations as may be included within the spirit and scope of the invention.
Claims (10)
1. The utility model provides a soft soil layer deep basal pit utility tunnel supporting construction, includes subway line area (1), its characterized in that: the underground deep foundation pit crossing construction area is arranged right above the subway line area (1), the left piling area (2) is arranged on the periphery of one side of the subway line area (1), the right piling area (3) is arranged on the periphery of the other side of the subway line area (1), one row or a plurality of rows of concrete piles (4) are respectively arranged in the left piling area (2) and the right piling area (3), the concrete piles (4) on the same side are poured and arranged into an integral structure, one or a plurality of arc-shaped protection arches (6) which are distributed side by side and span the subway line area (1) are erected above the concrete piles (4) on the left side, the arc-shaped protection arches (6) are erected along the crossing direction of the underground comprehensive pipe gallery, a plurality of equidistant arc-shaped window holes (9) are formed by the arc-shaped protection arches (6) and the arc-shaped connection member (8) in a crisscross manner, the arc-shaped protection arches (6) are vertically and horizontally arranged along two rows of mutually parallel support piles (13) on the arc-shaped window holes (9), the two support piles (13) are vertically arranged on the arc-shaped protection arches (13) are vertically arranged on the support piles (13), and a pipe gallery continuous wall (16) is arranged between the support piles (13) on the same side through concrete pouring.
2. The soft soil layer deep foundation pit underground utility tunnel supporting structure of claim 1, wherein: a plurality of arc steel frames (10) which are fixedly spliced are erected on soil bodies on the periphery above the subway line area (1), bottom templates (11) are installed on the arc steel frames (10), and the span of the erected arc steel frames (10) is larger than the maximum width of the subway line area (1).
3. The soft soil layer deep foundation pit underground utility tunnel supporting structure of claim 1, wherein: the outside of concrete pile (4) is provided with tip anchor seat (5), and the tip of arc protection arch (6) is fixed on tip anchor seat (5), and the inside of tip anchor seat (5) is provided with the stretch-draw hole, and the outer end of Zhang Lakong is provided with the stretch-draw anchor seat.
4. The soft soil layer deep foundation pit underground utility tunnel supporting structure of claim 1, wherein: the inside of arc protection arch (6) is provided with many prestressing steel bars (7) or prestressing steel cable, and the span of arc protection arch (6) is greater than the maximum width of subway line area (1).
5. The soft soil layer deep foundation pit underground utility tunnel supporting structure of claim 1, wherein: the support pile fixing seat (12) comprises an upper fixing frame (18), a lower fixing frame (19), opposite-pulling screw rods (20) and a flange fixing seat (21), wherein the upper fixing frame (18) is located on the upper portion of the arc-shaped protection arch (6) and the arc-shaped connecting member (8), the lower fixing frame (19) is located on the bottom of the arc-shaped protection arch (6) and the arc-shaped connecting member (8), the upper fixing frame (18) is fixedly connected with the lower fixing frame (19) through the opposite-pulling screw rods (20) and locking nuts, the flange fixing seat (21) is fixedly arranged on the upper fixing frame (18), and the support pile (13) is vertically fixed on the flange fixing seat (21).
6. The soft soil layer deep foundation pit underground utility tunnel supporting structure of claim 1, wherein: the lower part or the middle part of the support pile (13) is fixedly connected with the arc-shaped protection arch (6) or the arc-shaped connecting member (8) through the fixed diagonal brace (14), and the top ends of the support piles (13) positioned on the same side are fixedly provided with crown beams (15) which are horizontally distributed.
7. The soft soil layer deep foundation pit underground utility tunnel supporting structure of claim 1, wherein: a horizontal supporting rod (17) is fixedly arranged between the two rows of parallel supporting piles (13).
8. The soft soil layer deep foundation pit underground utility tunnel supporting structure of claim 1, wherein: the upper surface arc surface of the arc-shaped protection arch (6) is provided with a backfill area (22), and the upper surface of the backfill area (22) is arranged horizontally.
9. The construction method of the underground comprehensive pipe rack supporting structure of the soft soil layer deep foundation pit is characterized by comprising the following steps of:
a. firstly, the peripheral outline of a subway line area (1) is calibrated, and the specific position of a crossing railway line area (1) is determined;
b. then selecting a left piling area (2) on the periphery of one side of the subway line area (1), and selecting a right piling area (3) on the periphery of the other side of the subway line area (1);
c. then, arranging one or more rows of concrete piles (4) in the left piling area (2) and the right piling area (3) respectively, and arranging end anchoring seats (5) on the outer sides of the concrete piles (4);
d. then, arc-shaped protection arches (6) crossing the subway line area (1) are erected on the concrete piles (4), and the adjacent arc-shaped protection arches (6) are fixedly connected through arc-shaped connecting members (8);
e. then a plurality of support pile fixing seats (12) are fixedly arranged on the straight lines distributed along the two rows of support piles (13) in the cambered surface window holes (9), the support piles (13) are vertically fixed on the support pile fixing seats (12), and meanwhile, a pipe gallery continuous wall (16) is arranged between the support piles (13) positioned on the same side through concrete pouring;
f. and finally, a backfilling area (22) is arranged on the arc surface of the upper surface of the arc-shaped protection arch (6), so that the support construction operation of the underground comprehensive pipe rack deep foundation pit is completed.
10. The construction method of the soft soil layer deep foundation pit underground utility tunnel supporting structure is characterized by comprising the following steps: and e or f, crown beams (15) which are horizontally distributed are fixedly arranged at the top ends of the support piles (13) positioned at the same side, and horizontal support rods (17) are fixedly arranged between two rows of parallel support piles (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211660387.4A CN116104521A (en) | 2022-12-23 | 2022-12-23 | Soft soil layer deep foundation pit underground comprehensive pipe gallery supporting structure and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211660387.4A CN116104521A (en) | 2022-12-23 | 2022-12-23 | Soft soil layer deep foundation pit underground comprehensive pipe gallery supporting structure and construction method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116104521A true CN116104521A (en) | 2023-05-12 |
Family
ID=86260763
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211660387.4A Pending CN116104521A (en) | 2022-12-23 | 2022-12-23 | Soft soil layer deep foundation pit underground comprehensive pipe gallery supporting structure and construction method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116104521A (en) |
-
2022
- 2022-12-23 CN CN202211660387.4A patent/CN116104521A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108004928B (en) | A kind of asymmetric rigid frame-continuous girder construction technology | |
| CN109778700B (en) | Cast-in-place trough beam three-point sliding pushing construction method for crossing existing road | |
| CN107905124B (en) | A kind of symmetrical expression rigid frame-continuous girder construction technology | |
| CN107974942B (en) | A kind of abrupt slope side rigid frame-continuous girder end bay construction method | |
| CN113638304B (en) | Concrete beam type bridge hidden cover beam structure system and construction method thereof | |
| CN110387822A (en) | Cast-in-place Bent Cap assembled steel pipe holder and its construction method | |
| CN103410102A (en) | H-shaped double column pier wide-bridge-surface cantilever temporary consolidation structure and construction method thereof | |
| CN104652288A (en) | Construction system of cast-in-situ large-tonnage box girder for soft soil foundation and construction method | |
| CN210049103U (en) | High-grade high-speed highway bracket spanned by large-span cast-in-place box girder | |
| DE112022001701T5 (en) | Basket-shaped, large-span swallow-style steel box arch bridge with specially shaped arch ribs and its rapid construction method | |
| CN204780635U (en) | Super wide nonprismatic continuous beam 0# piece concreties and relieves construction structures | |
| CN217078829U (en) | Position structure of bridge pile foundation and subway tunnel | |
| CN102392417A (en) | Dual-cantilever bearing support structure for large steel pipe and installation method | |
| CN116104521A (en) | Soft soil layer deep foundation pit underground comprehensive pipe gallery supporting structure and construction method thereof | |
| CN210482000U (en) | Limiting device for jacking construction of large-span steel pipe concrete tied arch bridge | |
| CN210712576U (en) | Multi-hoop truss supporting bailey bracket for cast-in-situ large-span box girder | |
| CN219175315U (en) | Deep foundation pit underground comprehensive pipe gallery penetrating through soft soil layer | |
| CN219157759U (en) | Underground comprehensive pipe rack supporting structure with underground internal supporting system | |
| CN115748741A (en) | Deep foundation pit advanced support structure crossing subway line and construction method thereof | |
| CN111764298A (en) | Common support system for cast-in-place closure sections of box girders of steel bridge and construction method of common support system | |
| CN207714150U (en) | Assemble holder in adhesion type high-altitude | |
| CN111501531A (en) | Construction method of V-shaped thin-wall pier and 0# block main beam supporting system | |
| CN109629443B (en) | Cast-in-place channel beam three-point pushing system crossing existing road and construction method | |
| CN206189283U (en) | Novel sectional shelf -unit structure based on tidewater beach | |
| CN220767747U (en) | Railway basket arch bridge construction structure with large inclined span longitudinal slope underground double parallel structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |