CN216765981U - Sinking construction device for cast-in-place underground building - Google Patents

Abstract

The utility model discloses a sinking construction device for a cast-in-place underground building, which relates to the technical field of underground building construction, wherein the underground building comprises an outer wall, a top plate, a bottom plate and a construction device; the longitudinal wall comprises an upper hole and a lower hole, the upper hole is staggered from top to bottom, the upper hole is located above the bottom plate, the lower hole is close to the lower portion of the bottom plate, the chain cutter of the bottom plate envelopes the bottom plate through the upper hole and the lower hole, the building is in a suspended state through the hanging device, the driving device is started, the chain cutters at the bottom of the outer wall and the bottom plate excavate the rock soil, the excavated rock soil is brought to the upper portion through the chain cutter which runs from bottom to top, sinking operation of the building is achieved, the building sinks to a set depth, the chain cutter is drawn out, and then follow-up construction is completed until all construction of the building is completed.

Description

Sinking construction device for cast-in-place underground building

Technical Field

The utility model relates to the technical field of underground building construction, in particular to a sinking construction device for a cast-in-place underground building.

Background

The existing large-scale underground building is constructed by an open cut method commonly used, the open cut method needs to firstly cut a foundation pit for supporting, then pour or assemble the underground building in the foundation pit, needs to make temporary supporting and precipitation of the foundation pit, and has long construction period and high construction cost; at present, the chain cutter is adopted to excavate the rock soil at the bottom, the whole sinking technical scheme, and the sinking construction device without a hanging device has the following defects because the self load of the underground building is too heavy:

1. the inclination and the deviation are easy to generate, a deviation rectifying device needs to be additionally arranged when the device sinks, and once the deviation is generated, the deviation rectification is difficult to realize;

2. the large load is pressed on the bottom chain cutter, so that the power of the driving device is too large, and the chain cutter is easy to break;

3. the descent speed is difficult to control;

4. the feed amount of the bottom chain cutter is in an out-of-control state, so that the cutter is easily damaged.

SUMMERY OF THE UTILITY MODEL

In view of the problems in the prior art, the present invention is directed to a sinking construction apparatus for a cast-in-place type underground structure, which solves the problems of the prior art.

In order to achieve the purpose, the utility model provides the following technical scheme: the underground building comprises an outer wall, a top plate, a bottom plate and a construction device, wherein the outer wall comprises a longitudinal wall and a transverse wall, the construction device comprises a pouring device, an excavating device and a hanging device positioned at the top of the building, the excavating device comprises an outer wall excavating device and a bottom plate excavating device, the outer wall excavating device excavates rock soil at the bottom of the outer wall, the bottom plate excavating device excavates rock soil at the bottom of the bottom plate, the outer wall excavating device and the bottom plate excavating device comprise chain cutter excavating devices, each chain cutter excavating device comprises a chain cutter and a driving device, and each chain cutter comprises a chain and a cutter arranged on the chain; the chain cutter comprises an outer wall chain cutter in the outer wall excavating device and a bottom plate chain cutter in the bottom plate excavating device, the bottom plate chain cutter is transversely arranged and forms an angle with the longitudinal wall chain cutter, the driving device comprises an outer wall driving device and a bottom plate driving device, the outer wall driving device is installed above the outer wall, the bottom plate driving device is installed above the bottom plate, and the outer wall chain cutter is enveloped with the outer wall from the top of a sinking part of the building; the longitudinal wall comprises an upper hole and a lower hole, the upper hole is positioned above the bottom plate, the lower hole is close to the lower part of the bottom plate, the bottom plate chain cutter envelopes the bottom plate through the upper hole and the lower hole, the longitudinal wall comprises a lower longitudinal wall positioned below the bottom plate, a middle longitudinal wall between the upper hole and the lower hole and an upper longitudinal wall above the upper hole, the thickness of the middle longitudinal wall is smaller than or equal to the thickness difference of the lower longitudinal wall minus the thickness of the chain cutter, and the thickness of the upper longitudinal wall is smaller than or equal to the thickness of the lower longitudinal wall; the building is poured on the ground in a segmented mode in the length direction through the pouring device, the hanging device is used for enabling the building to be in a hanging state, the driving device is started, chain cutters at the bottoms of the outer wall and the bottom plate dig the rock soil, the chain cutters running from bottom to top bring the dug rock soil to the top, sinking operation of the building is achieved, the building sinks to a set depth, the chain cutters are drawn out, follow-up construction is completed, and the whole construction of the building is completed.

As a further scheme of the utility model: the lower hole in the longitudinal wall comprises an inlet blade plate, and when the bottom plate chain cutter carries rock soil such as cobblestones or boulders larger than the gap between the lower hole and the bottom plate chain cutter, the rock soil is crushed through the inlet blade plate.

As a further scheme of the utility model: the building sinks to a set depth, and when the buoyancy of underground water to the building and the friction of rock soil to the building are equal to the dead weight of the building including the excavating device, the building is in a critical state, and the building is always in a suspension state in the sinking process by weighting the building.

As a further scheme of the utility model: the chain knife comprises a chain plate, the chain plate is arranged on the chain, and the knife is arranged on the chain plate.

As a further scheme of the utility model: the chain cutter comprises a plurality of groups of tapered strip chain cutters, the cutters in the strip chain cutters comprise head cutters positioned at the front ends, middle cutters positioned in the middle and scraping plates positioned at the tail ends, the head cutters comprise long cutters, the middle cutters comprise two short cutters, the height of the scraping plates is slightly lower than that of the head cutters and the middle cutters, the head cutters and the middle cutters excavate rock soil, and the excavated rock soil is brought to the front by the scraping plates.

As a further scheme of the utility model: the hanging device comprises steel strand lifting jacks, the steel strand lifting jacks synchronously and slowly lift, and the building sinks under a hanging state and is difficult to deviate due to the huge dead weight of the building.

As a further scheme of the utility model: when the chain cutter excavates the ground, satisfy different geological conditions through the falling speed of control cable suspension device, when the sword wearing and tearing, outer wall excavating gear changes the sword at the top, and bottom plate excavating gear changes the sword above the bottom plate.

As a further scheme of the utility model: the bottom plate excavating device comprises a hydraulic flushing device and a hydraulic unearthing device, excavated rock soil is separated from the chain cutter through the hydraulic flushing device, and the mud-water mixture separated from the chain cutter is sent out through the hydraulic unearthing device.

As a further scheme of the utility model: the outer side of the longitudinal wall between the lower hole and the upper hole comprises a cover plate.

As a further scheme of the utility model: the upper hole is set at a specific height, and the bottom of the building generates set buoyancy in the sinking process.

In conclusion, compared with the prior art, the technology adopts the hanging device, the dead weight of the underground building is balanced by the hanging device, and the underground building has the following advantages:

1. because the underground building is extremely heavy and cannot deviate, a deviation rectifying device is not needed;

2. the dead weight of the underground building is not pressed on the chain cutter, so that the power of the driving device is small, the tension of the chain is small, and the chain is not easy to break;

3. the descending speed is controllable;

4. different geological conditions can be adapted by controlling the amount of feed.

Drawings

FIG. 1 is a schematic view of the excavating device 5 and the hanging devices 31 at the top of the building 1 after they are installed;

fig. 2 is a schematic structural view of an outer wall excavating device 51 and a bottom plate excavating device 52 excavating rock soil at the bottom of the building 1 to realize sinking operation of the building 1;

fig. 3 is a schematic structural view of the casting device 4 casting the building 1 on the ground; before pouring is started, an outer wall chain cutter 7A and a bottom plate chain cutter 7B are paved below a bottom steel mould, the chain cutters are paved on a bottom surface projection area, after partial or all pouring work is completed, when sinking construction is started, other equipment on the upper part of an excavating device 5 is installed, the chain cutters are connected, and closed-loop connection is completed;

fig. 4 is a schematic structural view of the completed construction of building 1, and is also a schematic structural view of upper hole 2XA displaced up and down and lower hole 2XB displaced up and down;

fig. 5 is a schematic structural view of the structure in which the outer wall excavating device 51 and the floor excavating device 52 are installed on the building 1;

fig. 6 is a schematic structural diagram of the bottom plate chain cutter 7B fully distributed below the bottom plate 12, and is a schematic structural diagram of an inlet blade plate 2XB1 arranged at the position where the bottom plate chain cutter 7B enters the lower hole 2 XB;

fig. 7 is a schematic structural view showing that the excavated soil and soil is separated from the chain cutter 7 by the hydraulic flushing device 521, and the muddy water mixture separated from the chain cutter 7 is discharged by the hydraulic unearthing device 522;

fig. 8 is a structural view after the construction device 3 sinks the building 1 to a certain depth;

fig. 9 is a schematic view of the structure in which link plate 73 is mounted on chain 71 and knife 72 is mounted on link plate 73;

fig. 10 is a schematic structural view of the strip-shaped chain cutter 8;

FIG. 1 is a building; 2 is an outer wall, including a longitudinal wall 2X and a transverse wall 2Y; 2X is a vertical wall comprising a lower vertical wall 2X1 and an upper vertical wall 2X 2; 2X1 is lower vertical wall; 2X2 is middle vertical wall; 2X3 is upper vertical wall; 2XB1 is the inlet blade; 2XA is an upper hole staggered up and down; 2XB is a lower hole staggered up and down; 2Y is a transverse wall; 11 is a top plate; 12 is a base plate; 3 is a construction device, and the construction device 3 comprises a pouring device 4, an excavating device 5 and a hanging device 31 positioned at the top of the building 1; 31 is a hanging device; 31A is a steel strand lifting jack; 4, a pouring device; 5 is an excavating device, comprising an outer wall excavating device 51 and a bottom plate excavating device 52; 51 is an outer wall excavating device; 52 is a floor excavation means; 6 is a chain cutter excavating device which comprises a chain cutter 7 and a driving device 61; 61 is a driving device; 611 is an outer wall driving device; 612 is a backplane drive; 7 is a chain cutter; 71 is a chain; 72 is a knife; 73 is a link plate; 7A is an outer wall chain cutter; 7B is a bottom plate chain cutter; and 7X is a vertical wall chain cutter.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative efforts based on the embodiments of the present invention belong to the protection scope of the present invention.

Referring to fig. 1 to 10, in the embodiment of the present invention, an underground building 1 includes an outer wall 2, a top plate 11, a bottom plate 12 and a construction device 3, the outer wall 2 includes a longitudinal wall 2X and a transverse wall 2Y, the construction device 3 includes a pouring device 4, an excavating device 5 and a hanging device 31 located at the top of the building 1, the excavating device 5 includes an outer wall excavating device 51 and a bottom plate excavating device 52, the outer wall excavating device 51 excavates rock soil at the bottom of the outer wall 2, the bottom plate excavating device 52 excavates rock soil at the bottom of the bottom plate 12, the outer wall excavating device 51 and the bottom plate excavating device 52 include a chain cutter excavating device 6, the chain cutter excavating device 6 includes a chain cutter 7 and a driving device 61, the chain cutter 7 includes a chain 71 and a cutter 72 mounted on the chain 71; the chain cutter 7 comprises an outer wall chain cutter 7A in the outer wall excavating device 51 and a bottom plate chain cutter 7B in the bottom plate excavating device 52, the bottom plate chain cutter 7B is transversely arranged and forms an angle of 90 degrees with the longitudinal wall chain cutter 7X, the driving device 61 comprises an outer wall driving device 611 and a bottom plate driving device 612, the outer wall driving device 611 is installed above the outer wall 2, the bottom plate driving device 612 is installed above the bottom plate 12, and the outer wall chain cutter 7A envelopes the outer wall 2 from the top of the sinking part of the building 1; the vertical wall 2X comprises an upper hole 2XA and a lower hole 2XB which are staggered up and down, the upper hole 2XA is positioned above the bottom plate 12, the lower hole 2XB is next to the lower part of the bottom plate 12, the bottom plate chain cutter 7B envelopes the bottom plate 12 through the upper hole 2XA and the lower hole 2XB, the vertical wall 2X comprises a lower vertical wall 2X1 positioned below the bottom plate 12, a middle vertical wall 2X2 between the upper hole 2XA and the lower hole 2XB and an upper vertical wall 2X3 positioned above the upper hole 2XA, the thickness of the middle vertical wall 2X2 is smaller than or equal to the difference of the thicknesses of the lower vertical wall 2X1 and the chain cutter 7, and the thickness of the upper vertical wall 2X3 is smaller than or equal to the thickness of the lower vertical wall 2X 1; the building 1 is poured on the ground in sections according to the length direction through the pouring device 4, the hanging device 31 is used for enabling the building 1 to be in a hanging state, the driving device 61 is started, the chain cutters 7 at the bottoms of the outer wall 2 and the bottom plate 12 dig the rock soil, the chain cutters 7 which run from bottom to top bring the dug rock soil to the top, sinking operation of the building 1 is achieved, the building 1 sinks to a set depth, the chain cutters 7 are extracted, and then follow-up construction is completed until all construction of the building 1 is completed.

As shown in fig. 3, before casting is started, an outer wall chain cutter 7A and a bottom plate chain cutter 7B are paved below a bottom steel mould, the chain cutters are paved on a bottom surface projection area, and when sinking construction is started after partial or all casting work is finished, other devices on the upper part of the excavating device 5 are installed, the chain cutters are connected, and closed-loop connection is completed.

It should be noted that the building 1 can be poured in sections in the height direction, a section is poured, the building is maintained to the designed strength, the driving device 61 is started, the building 1 is hung by the hanging device 31, the chain cutter excavating device 6 at the bottom excavates the rock soil at the bottom, and the building 1 sinks for a section as a whole.

As shown in fig. 6, the lower hole 2XB in the longitudinal wall 2X includes an inlet blade 2XB1 which is crushed by the inlet blade 2XB1 when the bottom plate chain cutter 7B carries rock soil such as cobblestones or boulders larger than the gap between the lower hole 2XB and the bottom plate chain cutter 7B.

The bottom plate excavating device 52 for transversely excavating the building 1 is provided with a plurality of sets of chain cutter excavating devices 6, bottom plate chain cutters 7B of the chain cutter excavating devices 6 are fully distributed on the bottom plate 12, and half of the chain cutter excavating devices 6 are provided with a bottom plate driving device 612 and a bottom plate driving device 612 with the other half of the chain cutter excavating devices 612, so that the rotating directions of the adjacent bottom plate driving devices 612 are opposite, and the chain cutter excavating devices 6 can be arranged at intervals, therefore, counter forces generated when excavating rock soil are offset, and the building 1 can be prevented from being inclined when sinking by the bottom plate excavating devices 52; the bottom plate chain cutter 7B returns to form a closed loop at the upper part of the bottom plate 12, and the bottom plate chain cutters 7B of the adjacent chain cutter digging devices 6 are in different heights and staggered spaces up and down, so that a pipeline can conveniently pass through.

The building 1 sinks to a set depth, and is in a critical state when the buoyancy of underground water to the building 1 and the friction of rock soil to the building 1 are equal to the self weight of the building 1 including the excavating device 5, and the building 1 is always in a suspended state in the process of sinking by adding weight to the building 1, for example, pouring water into the building 1.

As shown in fig. 9, the chain knife 7 comprises a chain plate 73, the chain plate 73 is mounted on the chain 71, and the knife 72 is mounted on the chain plate 73; the chain cutter 7 comprises a plurality of groups of tapered chain cutters 8, as shown in fig. 10, the cutters 72 in the chain cutters 8 comprise a head cutter 81 at the front end, a middle cutter 82 at the middle and a scraper 83 at the tail end, the head cutter 81 comprises a long cutter 811, the middle cutter 82 comprises two short cutters 821, the height of the scraper 83 is slightly lower than that of the head cutter 81 and the middle cutter 82, the head cutter 81 and the middle cutter 82 excavate the rock soil, and the scraper 83 brings the excavated rock soil to the front; assuming that the width of each set of chain blades is B, the pitch of the chain is T, n middle blades 82 are provided, and the length of the short blade 821 is a, the length of the long blade 811 is 2a, B = (2n +1) a, and the length of each set of strip-shaped chain blades 8 is equal to (n +2) T, so that the lengths of the upper blades 72 of each link plate 73 are equal.

Hanging device 31 include steel strand wires lifting jack 31A, steel strand wires lifting jack 31A goes up and down slowly in step, steel strand wires lifting jack 31A adopts the hydraulic pressure lifting mechanism of cross-core structure as the elevating gear, the wedge ground tackle at hydraulic pressure lifting mechanism both ends has one-way self-locking effect, when ground tackle work is tight, can lock the steel strand wires automatically, when the ground tackle is out of work pine, release the steel strand wires, the steel strand wires can move from top to bottom, can ensure that building 1 wholly sinks in step under the suspension state, because its self huge dead weight, be difficult to produce the skew, need not set up other deviation correcting device.

When the chain cutter 7 excavates rock soil, different geological conditions are met by controlling the descending speed of the hanging device 31, when the cutter 72 is worn, the outer wall excavating device 51 changes the cutter 72 at the top, and the bottom plate excavating device 52 changes the cutter 72 above the bottom plate 12; when encountering the cobblestones and the boulders, the cobblestones and the boulders are scraped with the knives 72 by an extremely slow descending speed.

The bottom plate excavating device 52 comprises a hydraulic flushing device 521 and a hydraulic unearthing device 522, excavated rock soil is separated from the chain cutter 7 through the hydraulic flushing device 521, and the mud-water mixture separated from the chain cutter 7 is sent out through the hydraulic unearthing device 522.

The outer side of the longitudinal wall 2X between the lower hole 2XB and the upper hole 2XA comprises a cover plate, and the cover plate is used for supporting a bottom plate chain cutter 7B; the upper holes 2XA are set at a certain height to give a set buoyancy to the bottom of the building 1 during sinking.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "front", "rear", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, only for the convenience of description of the present invention and for simplicity of description, rather than to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore, the present invention should not be construed as being limited thereto, and it should be noted that the terms "mounted" and "connected" should be interpreted broadly, for example, as being able to be fixedly connected, detachably connected, or integrally formed, mechanically connected or indirectly connected through an intermediate, and the specific meaning of the terms in the utility model can be understood through specific situations.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims (10)

1. A sinking construction device for a cast-in-place underground building is characterized in that the underground building (1) comprises an outer wall (2), a top plate (11), a bottom plate (12) and a construction device (3), the outer wall (2) comprises a longitudinal wall (2X) and a transverse wall (2Y), the construction device (3) comprises a pouring device (4), an excavating device (5) and a hanging device (31) positioned at the top of the building (1), the excavating device (5) comprises an outer wall excavating device (51) and a bottom plate excavating device (52), the outer wall excavating device (51) excavates rock soil at the bottom of the outer wall (2), the bottom plate excavating device (52) excavates rock soil at the bottom of the bottom plate (12), the outer wall excavating device (51) and the bottom plate excavating device (52) comprise a chain cutter excavating device (6), the chain cutter excavating device (6) comprises a chain cutter (7) and a driving device (61), the chain knife (7) comprises a chain (71) and a knife (72) arranged on the chain (71); the chain cutter (7) comprises an outer wall chain cutter (7A) in an outer wall excavating device (51) and a bottom plate chain cutter (7B) in a bottom plate excavating device (52), the bottom plate chain cutter (7B) is transversely arranged and forms an angle of 90 degrees with a longitudinal wall chain cutter (7X), the driving device (61) comprises an outer wall driving device (611) and a bottom plate driving device (612), the outer wall driving device (611) is installed above the outer wall (2), the bottom plate driving device (612) is installed above the bottom plate (12), and the top of a sinking part of the outer wall chain cutter (7A) from the building (1) is enveloped with the outer wall (2); the vertical wall (2X) comprises an upper hole (2 XA) and a lower hole (2 XB), the upper hole (2 XA) is located above the bottom plate (12), the lower hole (2 XB) is close to the lower side of the bottom plate (12), the bottom plate chain cutter (7B) envelopes the bottom plate (12) through the upper hole (2 XA) and the lower hole (2 XB), the vertical wall (2X) comprises a lower vertical wall (2X 1) located below the bottom plate (12), a middle vertical wall (2X 2) between the upper hole (2 XA) and the lower hole (2 XB) and an upper vertical wall (2X 3) above the upper hole (2 XA), the thickness of the middle vertical wall (2X 2) is smaller than or equal to the difference between the thicknesses of the chain reducing cutters (7) of the lower vertical wall (2X 1), and the thickness of the upper vertical wall (2X 3) is smaller than or equal to the thickness of the lower vertical wall (2X 1); the building (1) is cast in sections on the ground along the length direction through the casting device (4), and the building (1) is in a suspension state through the hanging device (31).

2. A sinking construction unit for a cast-in-place underground building according to claim 1, wherein the lower hole (2 XB) of the longitudinal wall (2X) includes an entrance blade (2 XB 1) for crushing the bottom plate cutter chain (7B) when it carries rock soil larger than a gap between the lower hole (2 XB) and the bottom plate cutter chain (7B) through the entrance blade (2 XB 1).

3. A sinking construction unit for a cast-in-place underground building according to claim 2, wherein the building (1) is sunk to a predetermined depth, and is in a critical state when buoyancy of underground water to the building (1) and friction of rock soil to the building (1) are equal to the self weight of the building (1) including the excavating means (5), and the building (1) is always in a suspended state during sinking by applying weight to the building (1).

4. A sinking construction unit for a cast-in-place underground structure according to claim 3, wherein the cutter chain (7) comprises a chain plate (73), the chain plate (73) is installed on the chain (71), and the cutter (72) is installed on the chain plate (73).

5. A sinking construction unit for a cast-in-place underground building according to claim 4, wherein the chain cutter (7) comprises a plurality of sets of tapered chain cutters (8), the cutters (72) of the chain cutters (8) comprise a head cutter (81) at the front end, a middle cutter (82) at the middle end and a scraping blade (83) at the rear end, the head cutter (81) comprises a long cutter (811), the middle cutter (82) comprises two short cutters (821), the height of the scraping blade (83) is slightly lower than the height of the head cutter (81) and the middle cutter (82), the head cutter (81) and the middle cutter (82) excavate the rock soil, and the scraping blade (83) brings the excavated rock soil to the front.

6. A sinking construction unit for a cast-in-place underground building according to claim 5, wherein the suspending means (31) comprises a plurality of twisted wire elevating jacks (31A), the plurality of twisted wire elevating jacks (31A) are synchronously and slowly elevated, and the building (1) is suspended and is not easily deviated due to its own weight.

7. A sinking construction unit for a cast-in-place underground structure according to claim 6, wherein the chain cutter (7) is adapted to meet different geological conditions by controlling a descending speed of the hanger (31) when excavating the soil, the outer wall excavating unit (51) performs cutter replacement (72) at the top and the floor excavating unit (52) performs cutter replacement (72) above the floor (12) when the cutter (72) is worn.

8. A sinking construction unit for a cast-in-place underground structure according to claim 7, wherein the floor excavating means (52) comprises a hydraulic flushing means (521) and a hydraulic unearthing means (522), the excavated soil and soil are separated from the chain cutter (7) by the hydraulic flushing means (521), and the muddy water mixture separated from the chain cutter (7) is discharged by the hydraulic unearthing means (522).

9. A sinking construction unit for a cast-in-place underground building according to claim 8, wherein the outer side of the longitudinal wall (2X) between the lower hole (2 XB) and the upper hole (2 XA) comprises a cover plate.

10. A sinking construction unit for a cast-in-place underground structure according to claim 1, wherein the upper hole (2 XA) is set at a specific height to generate a set buoyancy at the bottom of the structure (1) during the sinking.

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