CN109914472B - A kind of prefabricated comprehensive pipe gallery in soft soil area and its construction method - Google Patents

Abstract

The invention provides an assembled comprehensive pipe gallery in a soft soil area and a construction method thereof. The utility tunnel comprises a plurality of frame components which are arranged along the direction of the tunnel body at intervals, and a plurality of side plates, a bottom plate and a top plate. The construction method of the comprehensive pipe gallery comprises the steps of leveling a field, paying off, constructing stand columns, installing side plates, grouting connecting sections, installing cross beams, reinforcing foundation jet grouting piles, excavating soil bodies, casting a bottom plate in situ, installing a top plate, backfilling the upper portion and the like. The utility tunnel has certain integrity, shock resistance and impermeability. The installation process is simplified, the construction efficiency is improved, and the like, so that the method has remarkable effects and wide application prospect.

Description

A kind of prefabricated comprehensive pipe gallery in soft soil area and its construction method

technical field

The invention relates to the technical field of construction, in particular to a prefabricated comprehensive pipe gallery in a soft soil area and a construction method thereof.

Background technique

In recent years, with the sustained and rapid development of the national economy, the scale of cities in my country is also expanding rapidly. Rapid urbanization has led to a large increase in urban population, and the demand for municipal pipelines such as power supply, water supply and drainage, heating, gas supply and communication, which are the basis for rapid urban development, has also increased significantly. However, due to the limitations of the city's own conditions in the past, the carrying capacity of municipal pipelines has undergone a huge test. The contradiction between the rapid urban development's increasing demand for the carrying capacity of municipal pipelines and the speed and rationality of municipal pipeline development has become increasingly prominent. This contradiction has become an important issue in the process of urban development at home and abroad, and has become a bottleneck for urban expansion. As an important measure for the intensive management of underground space pipelines, the integrated pipe gallery can effectively solve the above problems.

Underground comprehensive pipe gallery refers to the centralized laying of municipal pipelines such as water supply, drainage, gas, heat, electricity, communication, radio and television in urban underground space, and synchronously supporting auxiliary facilities such as fire protection, lighting, ventilation, monitoring and alarm, and implement unified planning. , construction and management of public tunnels, with significant advantages such as resource intensification, long service life, high safety performance, and good environmental benefits. In the prior art, the construction of comprehensive pipe gallery mainly includes: reinforced concrete cast-in-place pipe gallery and prefabricated reinforced concrete assembled pipe gallery. The construction site of the cast-in-place pipe gallery is in great demand, the molding time is long, the process steps are cumbersome, and the project cost is high; the prefabricated pipe gallery has a simple structure, no need for a large site, convenient installation and construction, small amount of work, and high installation efficiency, but in order to achieve strength and stiffness requirements, the amount of steel bars is large, the overall weight is large, the transportation is difficult, the cost is high, and the components are easily damaged. Usually, in the construction of the integrated pipe gallery, it is necessary to use an excavator to excavate the foundation pit to the design elevation, and separately support the excavated foundation pit, and then perform the in-situ casting or installation of the pipe gallery, and finally backfill to form an underground space structure. The support after the excavation of the foundation pit during the cast-in-place or installation process of the pipe gallery not only increases the site demand, but also increases the amount of materials and the amount of engineering to increase the construction period by supporting the excavated foundation pit separately. For soft soil foundations, due to insufficient bearing capacity, the soft soil foundations need to be reinforced in advance.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a soft soil area prefabricated integrated pipe gallery and its construction method, so as to solve the problems existing in the prior art.

The technical scheme adopted in order to achieve the purpose of the present invention is as follows, a construction method of a prefabricated comprehensive pipe gallery in a soft soil area, comprising the following steps:

1) Level the site according to the construction requirements.

2) Lay out lines on the ground according to the design requirements, and mark the position of the uprights.

3) Fill the vertical groove of the column with cork. The column is implanted into the foundation according to the design depth. Wherein, the column includes a space pipe gallery part and a force-holding layer part. The space pipe gallery portion is located above the force-holding layer portion. The space pipe gallery part and the force-holding layer part are integrated. The holding layer is partially inserted into the soft soil foundation. The space pipe gallery part is a rectangular column as a whole. The four side walls of this rectangular cylinder are labeled as a first side wall, a second side wall, a third side wall, and a fourth side wall in sequence. The plane on which the first side wall and the third side wall are located is parallel to the direction of the corridor body, and the plane on which the second side wall and the fourth side wall are located is perpendicular to the direction of the corridor body. A rectangular parallelepiped is removed from the first side wall to form a beam gap. One outlet of the beam notch is on the top surface of the column. The upper part of the third side wall is provided with a haunch angle. The upper surface of the axillary angle is higher than the top surface of the column. The second side wall and the fourth side wall are provided with vertical strip grooves which are wedge-inserted with the side plates. Grouting holes are vertically arranged on the groove wall of the vertical strip groove. The grouting hole extends from the top surface to the bottom surface of the space pipe gallery part. A grouting pipe is pre-embedded in the grouting hole. The uprights are arranged in two rows. The columns in each row are arranged at intervals along the corridor. In the two rows of uprights, the third side walls of the two opposite uprights are away from each other, and the first side walls are opposite.

4) Embed the side plate between two adjacent columns in the same row. Wherein, the side plate extrudes the cork filled in the vertical groove.

5) Inject expansive cement mortar into the grouting pipe embedded in the grouting hole. The upright column and the corresponding side plate are fixedly connected as a whole.

6) Spread the expanded cement mortar in the gap of the beam. The two ends of the beam are respectively embedded in the beam gaps of two opposite columns in the two rows of columns. The expansive cement mortar in the gap of the beam connects the beam and the corresponding two columns as a whole.

7) Excavate the soil in the foundation pit of the designed pipe gallery.

8) Pour the bottom plate at the design elevation of the bottom plate of the pipe gallery. The bottom plate, the upright column and the side plate are cast as a whole. The bottom plate and the bearing layer part of the column together form a pile plate structure.

9) Set up the top plate above the beam.

10) Backfill the excavated soil in step 7) above the roof to form an underground pipe gallery space.

Further, when the foundation is a weak foundation, after step 6), there is also a related step of reinforcing the foundation with rotary spray piles.

Further, in step 3), the column is implanted into the foundation by the hammering method or the static pile pressing method.

Further, after step 9), there is also a related step of injecting ethylene oxide resin into the joints between the top plate and the column, the beam and the side plate.

The invention also discloses a soft soil area prefabricated comprehensive pipe gallery prepared by the above construction method, comprising a plurality of frame parts arranged at intervals along the direction of the gallery body, and a plurality of side plates, a bottom plate and a top plate.

The frame member includes two uprights and beams. The beam is connected between the two uprights.

The upright column includes a space pipe gallery part and a force-holding layer part. The holding layer is partially inserted into the soft soil foundation. The space pipe gallery portion is located above the force-holding layer portion. The space pipe gallery part is a rectangular column as a whole. The four side walls of this rectangular cylinder are labeled as a first side wall, a second side wall, a third side wall, and a fourth side wall in sequence. The first side wall faces the inside of the pipe gallery, and the planes where the second side wall and the fourth side wall are located are perpendicular to the direction of the gallery body. The second side wall and the fourth side wall are provided with vertical strip grooves which are wedge-inserted with the side plates. Vertical grouting holes are arranged on the groove wall of the vertical strip groove. The grouting hole extends from the top surface to the bottom surface of the space pipe gallery part. A grouting pipe is pre-embedded in the grouting hole.

Two side plates are arranged between two adjacent frame parts. Both ends of the side plate are respectively embedded in the vertical strip grooves on the second side wall and the vertical strip grooves on the fourth side wall corresponding to the two uprights.

The bottom plate is a reinforced concrete plate. The bottom plate is arranged below the side plate. The bottom plate, the upright column and the side plate are cast as a whole. The bottom plate and the bearing layer part together form a pile plate structure.

The top plate is placed above the frame member.

Further, the lower portion of the force-holding layer portion has a pointed end.

Further, the roof includes several prefabricated roofs arranged along the corridor body. The two adjacent prefabricated roof panels are connected as a whole by grouting in the joints.

Further, in the base below the bottom plate, there are several rotary spray piles.

The technical effect of the present invention is beyond doubt:

A. A part of the uprights is inserted into the foundation, which plays the role of pile foundation. After being combined with the bottom plate, a pile-plate structure is formed, which supports the upper load and controls the settlement, so there is no need to perform additional reinforcement treatment on the soft soil foundation;

B. The prefabricated parts are small in size, light in weight and easy to install, which can greatly improve the construction efficiency and realize the rapid installation of the underground pipe gallery;

C. The joints of the prefabricated components are connected to each other by grouting to form the whole pipe gallery, which can not only prevent the leakage of groundwater, but also has a good anti-seismic effect.

D. The positioning of the columns, side plates and beams precedes the excavation of the foundation pit soil, and plays a role in supporting the foundation pit. There is no need for additional foundation pit support, which greatly saves civil and building materials, and at the same time improves the construction efficiency and shortens the construction period. ;

E. Rotary spray piles can harden and reinforce the soil at the lower part of the pipe gallery, and at the same time, the cast-in-place bottom plate is full of reinforcement to make the underground pipe gallery firmer, with higher structural strength, and can prevent the settlement of the underground pipe gallery.

Description of drawings

Figure 1 is a schematic diagram of the structure of the integrated pipe gallery;

Figure 2 is a diagram of the positional relationship of components;

Figure 3 is a schematic diagram of a column structure;

Figure 4 is a top view of the column.

In the figure: column 1, space pipe gallery part 101, beam gap 1011, haunch angle 1012, vertical groove 1013, grouting hole 1014, bearing layer part 102, tip 1021, beam 2, side plate 3, bottom plate 4, The top plate 5 , the prefabricated top plate 501 , and the rotary jet pile 9 .

Detailed ways

The present invention will be further described below in conjunction with the examples, but it should not be understood that the scope of the above-mentioned subject matter of the present invention is limited to the following examples. Without departing from the above-mentioned technical idea of the present invention, various substitutions and changes can be made according to common technical knowledge and conventional means in the field, which shall be included in the protection scope of the present invention.

Example 1:

The present embodiment discloses a construction method for a prefabricated integrated pipe gallery in a soft soil area, comprising the following steps:

1) Level the site according to the construction requirements.

2) According to the design requirements, lay out the line on the ground, and mark the position of the column 1.

3) Fill the vertical groove 1013 of the column 1 with cork. Implant the column 1 into the foundation according to the design depth. Wherein, the column 1 includes a space pipe gallery portion 101 and a force-holding layer portion 102 . The space pipe gallery portion 101 is located above the force-holding layer portion 102 . The space pipe gallery portion 101 and the force-holding layer portion 102 are integrated. The bearing layer portion 102 is inserted into the soft soil foundation to provide bearing capacity. The space pipe gallery part provides the pipe gallery structural support. The space pipe gallery part 101 is a rectangular column as a whole. The four side walls of this rectangular cylinder are labeled as a first side wall, a second side wall, a third side wall, and a fourth side wall in sequence. The plane on which the first side wall and the third side wall are located is parallel to the direction of the corridor body, and the plane on which the second side wall and the fourth side wall are located is perpendicular to the direction of the corridor body. A rectangular parallelepiped is removed from the first side wall to form a beam gap 1011 . An outlet of the beam notch 1011 is on the top surface of the column 1 . The upper part of the third side wall is provided with a haunch angle 1012 . The upper surface of the armpit angle 1012 is higher than the top surface of the column 1 . The second side wall and the fourth side wall are provided with vertical strip grooves 1013 wedge-inserted with the side plate 3 . Grouting holes 1014 are vertically disposed on the groove walls of the vertical strip grooves 1013 . The grouting holes 1014 extend from the top surface to the bottom surface of the space pipe gallery portion 101 . A grouting pipe is pre-embedded in the grouting hole 1014 . The uprights 1 are arranged in two rows. The columns 1 in each row are arranged at intervals along the corridor. In the two rows of uprights 1 , the third side walls of the two opposite uprights 1 are away from each other, and the first side walls are opposite to each other.

4) Embed the side plate 3 between two adjacent uprights 1 in the same row of uprights. Wherein, the side plate 3 extrudes the cork filled in the vertical groove 1013 .

5) Inject expansive cement mortar into the grouting pipe embedded in the grouting hole 1014. The upright column 1 and the corresponding side plate 3 are fixedly connected as a whole.

6) Spread cement mortar in the gap 1011 of the beam. The two ends of the beam 2 are respectively embedded in the beam gaps 1011 of the two opposite columns 1 in the two rows of columns 1 . The expanded cement mortar in the beam gap 1011 fixedly connects the beam 2 and the corresponding two upright columns 1 as a whole.

7) Excavate the soil in the foundation pit of the designed pipe gallery.

8) Pour the bottom plate 4 at the design elevation position of the bottom plate of the pipe gallery. The bottom plate 4 is cast as a whole with the column 1 and the side plate 3 . The bottom plate 4 and the bearing layer portion 102 of the column 1 together form a pile-plate structure, which supports the upper load and controls the settlement.

9) Set up the top plate 5 above the beam 2.

10) Backfill the excavated soil in step 7) above the roof 5 to form an underground pipe gallery space.

Example 2:

The foundation in this embodiment is a weak foundation. In this embodiment, the upright column 1 is driven into the soft soil foundation for positioning, and the side plates 3, the beams 2, and the bottom plate 4 are installed in sequence to form the base and the top plate 5 to form a prefabricated integrated pipe gallery. The present embodiment discloses a construction method for a prefabricated integrated pipe gallery in a soft soil area, comprising the following steps:

1) Site leveling: Clean and level the site according to the requirements of the construction site.

2) Pay-out: Pay-out on the surface according to the design requirements. According to the design drawings of the pipe gallery, sprinkle white ash on the ground surface, and mark the position of the column 1.

3) Construction of the column: Fill the vertical groove 1013 of the column 1 with cork. According to the design depth, the column 1 is implanted into the foundation by the hammering method or the static pile pressing method. Wherein, the column 1 includes a space pipe gallery portion 101 and a force-holding layer portion 102 . The space pipe gallery portion 101 is located above the force-holding layer portion 102 . The space pipe gallery portion 101 and the force-holding layer portion 102 are integrated. The bearing layer portion 102 is inserted into the soft soil foundation to provide bearing capacity. The space pipe gallery part provides the pipe gallery structural support. The space pipe gallery part 101 is a rectangular column as a whole. The four side walls of this rectangular cylinder are labeled as a first side wall, a second side wall, a third side wall, and a fourth side wall in sequence. The plane on which the first side wall and the third side wall are located is parallel to the direction of the corridor body, and the plane on which the second side wall and the fourth side wall are located is perpendicular to the direction of the corridor body. A rectangular parallelepiped is removed from the first side wall to form a beam gap 1011 . An outlet of the beam notch 1011 is on the top surface of the column 1 . The upper part of the third side wall is provided with a haunch angle 1012 . The upper surface of the armpit angle 1012 is higher than the top surface of the column 1 . The second side wall and the fourth side wall are provided with vertical strip grooves 1013 wedge-inserted with the side plate 3 . Grouting holes 1014 are vertically disposed on the groove walls of the vertical strip grooves 1013 . The grouting holes 1014 extend from the top surface to the bottom surface of the space pipe gallery portion 101 . A grouting pipe is pre-embedded in the grouting hole 1014 . The upper and lower ends of the grouting pipe are open, and the side walls are provided with small holes. The uprights 1 are arranged in two rows. The columns 1 in each row are arranged at intervals along the corridor. In the two rows of uprights 1 , the third side walls of the two opposite uprights 1 are away from each other, and the first side walls are opposite to each other.

4) Install the side plate: Embed the side plate 3 between the two adjacent columns 1 in the same row of columns. Wherein, the side plate 3 extrudes the cork filled in the vertical groove 1013 .

5) Grouting in the connection section: inject expansion cement mortar into the grouting pipe pre-buried in the grouting hole 1014, and the expansion cement mortar fills the groove grouting hole 1014 and the vertical groove 1013 from bottom to top. The upright column 1 and the corresponding side plate 3 are fixedly connected as a whole.

6) Install the beam: apply expansion cement mortar in the beam gap 1011. The two ends of the beam 2 are respectively embedded in the beam gaps 1011 of the two opposite columns 1 in the two rows of columns 1 . The expanded cement mortar in the beam gap 1011 fixedly connects the beam 2 and the corresponding two upright columns 1 as a whole.

7) Reinforcement of the base rotary jet pile: use the drilling rig to drill the rotary jet grouting pipe and nozzle at the design elevation of the column 1, and pass the pre-prepared slurry through the high-pressure generating device to make the liquid flow from the grouting pipe nozzle at high speed. The soil is destroyed, and the drill pipe is rotated and lifted at the same time, so that the slurry and the soil are fully stirred and mixed, and a columnar consolidation body with a certain diameter - the rotary jet pile 9 is formed in the soil, so that the foundation is reinforced.

8) Soil excavation: Use excavation machinery to excavate the foundation pit, and excavate to the design elevation of the pipe gallery.

9) Cast-in-place bottom plate: pour the bottom plate 4 at the design elevation of the bottom plate of the pipe gallery. The bottom plate 4, the upright column 1 and the side plate 3 are cast as a whole to form a full hall foundation. The bottom plate 4 and the bearing layer portion 102 of the column 1 together form a pile-plate structure, which supports the upper load and controls the settlement.

10) Install the top plate: set up the top plate 5 above the beam 2. Ethylene oxide resin is injected into the joints between the top plate 5 and the column 1 , the beam 2 and the side plate 3 to prevent the infiltration of groundwater.

11) Upper backfill: Backfill the excavated soil in step 8) above the roof 5 to form an underground pipe gallery space.

It is worth noting that, in the present embodiment, in the process of forming the prefabricated integrated pipe gallery, the vertical column 1 and the side plate 3 can be used as the support structure for the excavation of the foundation pit of the pipe gallery. After the side plate 3 is installed, the foundation pit can be excavated. All components except the base plate 4 are factory prefabricated. The components can be assembled on site, and the construction efficiency is high. The pipe gallery as a whole has certain integrity, shock resistance and impermeability. The invention also discloses a construction method of the pipe gallery. This embodiment can play a significant role in reducing the construction cost, simplifying the installation process, and improving the construction efficiency, and has broad application prospects.

Example 3:

Referring to FIG. 1 , this embodiment discloses a soft soil area prefabricated comprehensive pipe gallery prepared by the construction method described in Embodiment 2, including frame parts arranged at intervals along the corridor body, and side panels 3 , bottom panels 4 and top panels 5.

The frame part includes two uprights 1 and beams 2 . The beam 2 is connected between the two uprights 1 .

Referring to FIG. 3 and FIG. 4 , the column 1 includes a space pipe gallery portion 101 and a force-holding layer portion 102 . The lower part of the force-holding layer part 102 has a tip 1021, which is convenient for the construction of the column. The bearing layer portion 102 is inserted into a soft soil foundation. The space pipe gallery portion 101 is located above the force-holding layer portion 102 . The space pipe gallery part 101 is a rectangular column as a whole. The four side walls of this rectangular cylinder are labeled as a first side wall, a second side wall, a third side wall, and a fourth side wall in sequence. The first side wall faces the inside of the pipe gallery, and the planes where the second side wall and the fourth side wall are located are perpendicular to the direction of the gallery body. A rectangular parallelepiped is removed from the first side wall to form a beam gap 1011 . An outlet of the beam notch 1011 is on the top surface of the column 1 . The upper part of the third side wall is provided with a haunch angle 1012 . The upper surface of the armpit angle 1012 is higher than the top surface of the column 1 . Both ends of the beam 2 are respectively embedded in the beam gaps 1011 of the two uprights 1 . The second side wall and the fourth side wall are provided with vertical strip grooves 1013 wedge-inserted with the side plate 3 . Vertical grouting holes 1014 are provided on the groove walls of the vertical strip grooves 1013 . The grouting holes 1014 extend from the top surface to the bottom surface of the space pipe gallery portion 101 . A grouting pipe is pre-embedded in the grouting hole 1014 .

Two side plates 3 are arranged between two adjacent frame parts. Both ends of the side plate 3 are respectively embedded in the vertical strip grooves 1013 on the second side wall and the vertical strip grooves 1013 on the fourth side wall corresponding to the two uprights 1 .

Referring to FIG. 2 , the bottom plate 4 is a reinforced concrete slab. The bottom plate 4 is arranged below the side plate 3 . The bottom plate 4 is cast as a whole with the column 1 and the side plate 3 . The bottom plate 4 and the bearing layer portion 102 together constitute a pile plate structure. In the base below the bottom plate 4 , there is a rotary spray pile 9 .

The top plate 5 is placed above the frame part. The top panel 5 includes a plurality of prefabricated top panels 501 arranged along the corridor body. The two adjacent prefabricated roof panels 501 are connected as a whole by grouting in the joint.

Claims (8)

1. a construction method of prefabricated comprehensive pipe gallery in soft soil area, is characterized in that, comprises the following steps: 1) Level the site according to the construction requirements; 2) Lay out lines on the surface according to the design requirements, and mark the position of the column (1); 3) Fill the vertical grooves (1013) of the uprights (1) with corks; implant the uprights (1) into the foundation according to the design depth; wherein, the uprights (1) include the space pipe gallery portion (101) and a force-holding layer part (102); the space pipe gallery part (101) is located above the force-holding layer part (102); the space pipe gallery part (101) and the force-holding layer part (102) are integrated; the The holding layer part (102) is inserted into the soft soil foundation; the space pipe gallery part (101) is a rectangular column as a whole; the four side walls of the rectangular column are marked as the first side wall, the second side wall, the The third side wall and the fourth side wall; the plane where the first side wall and the third side wall are located is parallel to the direction of the corridor body, and the plane where the second side wall and the fourth side wall are located is perpendicular to the direction of the corridor body; A cuboid is removed from the side wall to form a beam gap (1011); an outlet of the beam gap (1011) is on the top surface of the column (1); the upper part of the third side wall is provided with a haunch angle (1012); the The upper surface of the armpit angle (1012) is higher than the top surface of the upright column (1); the second side wall and the fourth side wall are provided with vertical strip grooves (1013) wedged with the side plate (3); Grouting holes (1014) are vertically arranged on the groove walls of the vertical strip grooves (1013); the grouting holes (1014) extend from the top surface to the bottom surface of the space pipe gallery part (101); The grouting pipes are pre-embedded in the grouting holes (1014); the uprights (1) are arranged in two rows; the uprights (1) in each row are arranged at intervals along the direction of the gallery body; among the two rows of uprights (1), two opposite The third side wall of the root column (1) is away from the first side wall; 4) Embedding a side plate (3) between two adjacent uprights (1) in the same row of uprights; wherein, the side plate (3) extrudes the cork filled in the vertical groove (1013); 5) Inject expansive cement mortar into the grouting pipe pre-buried in the grouting hole (1014); the column (1) and the corresponding side plate (3) are fixedly connected as a whole; 6) Apply expansion cement mortar in the beam gap (1011); insert the two ends of the beam (2) into the beam gap (1011) of the two opposite columns (1) in the two rows of columns (1) respectively; the beam The expansive cement mortar in the gap (1011) fixedly connects the beam (2) and the corresponding two uprights (1) as a whole; 7) Excavate the soil in the foundation pit of the designed pipe gallery; 8) The bottom plate (4) is poured at the design elevation position of the bottom plate of the pipe gallery; the bottom plate (4) is poured into a whole with the column (1) and the side plate (3); the support of the bottom plate (4) and the column (1) The force layer parts (102) together constitute a pile-plate structure; 9) Set up the top plate (5) above the beam (2); 10) Backfill the excavated soil in step 7) above the roof (5) to form an underground pipe gallery space. 2. The construction method of a soft soil area prefabricated comprehensive pipe gallery according to claim 1, characterized in that: when the ground is a weak foundation, after step 6), there is also a method for reinforcing the base with a rotary spray pile (9). related steps. 3. The construction method of a soft soil area prefabricated comprehensive pipe gallery according to claim 1, characterized in that: in step 3), the upright column (1) is implanted into the foundation by the hammering method or the static pile pressing method middle. 4. The construction method of the prefabricated comprehensive pipe gallery in a soft soil area according to claim 1, characterized in that: after step 9), there is also a structure on the top plate (5), the column (1), the beam (2) and the The relevant steps of injecting ethylene oxide resin into the joints of the side panels (3). 5. A soft soil area prefabricated comprehensive pipe gallery prepared by the construction method according to claim 1, characterized in that it comprises a plurality of frame parts arranged at intervals along the direction of the gallery body, and a plurality of side plates (3), a bottom plate (4) and top plate (5); The frame part comprises two uprights (1) and a beam (2); the crossbeam (2) is connected between the two uprights (1); The upright column (1) includes a space pipe gallery part (101) and a force-holding layer part (102); the force-holding layer part (102) is inserted into the soft ground; the space pipe gallery part (101) is located in the force-holding layer part (102) Above the layer part (102); the space pipe gallery part (101) is a rectangular column as a whole; the four side walls of this rectangular column are marked as the first side wall, the second side wall, the third side wall and the first side wall. Four side walls; the first side wall faces the inside of the pipe gallery, and the planes where the second side wall and the fourth side wall are located are perpendicular to the direction of the gallery body; the second side wall and the fourth side wall are provided with side panels ( 3) Vertical grooves (1013) for wedge insertion; vertical grouting holes (1014) are provided on the groove walls of the vertical grooves (1013); the grouting holes (1014) extend from the space pipe The top surface of the gallery part (101) extends to the bottom surface; the grouting pipe is pre-embedded in the grouting hole (1014); Two side plates (3) are arranged between two adjacent frame parts; both ends of the side plates (3) are respectively embedded in vertical grooves (1013) on the second side walls corresponding to the two uprights (1). ) and the vertical slot (1013) on the fourth side wall; The bottom plate (4) is a reinforced concrete plate; the bottom plate (4) is arranged below the side plate (3); the bottom plate (4) is cast as a whole with the column (1) and the side plate (3); the The bottom plate (4) and the bearing layer part (102) together constitute a pile plate structure; The top plate (5) is erected above the frame parts. 6. A soft soil area prefabricated comprehensive pipe gallery according to claim 5, characterized in that: the lower part of the bearing layer part (102) has a tip (1021). 7. The prefabricated comprehensive pipe gallery in soft soil area according to claim 5, characterized in that: the roof plate (5) comprises several prefabricated roof plates (501) arranged along the direction of the gallery body; two adjacent prefabricated roof plates (501) The top plates (501) are connected as a whole by grouting in the joints. 8 . The prefabricated comprehensive pipe gallery in soft soil area according to claim 5 , characterized in that: in the base below the bottom plate ( 4 ), there are several jetting piles ( 9 ).

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