CN213709559U

CN213709559U - Foundation pit support for ship lock extension

Info

Publication number: CN213709559U
Application number: CN202022288458.5U
Authority: CN
Inventors: 陈文霞; 韦莎丽; 潘健
Original assignee: South China University of Technology SCUT
Current assignee: South China University of Technology SCUT
Priority date: 2020-10-14
Filing date: 2020-10-14
Publication date: 2021-07-16
Anticipated expiration: 2030-10-14

Abstract

The utility model discloses a foundation ditch support is used in lock enlargement. The foundation pit support for ship lock extension comprises a two-line ship lock foundation pit which is arranged on one side of a one-line ship lock in parallel, and a foundation pit support structure is arranged in the two-line ship lock foundation pit and comprises a waist beam, a support cross beam and an embedded strut. The utility model discloses set up double underground continuous wall supporting construction and double high pressure jet grouting pile supporting construction between first line ship lock and second line ship lock foundation ditch to cooperate curtain grout blanket and red copper sheet stagnant water wall, establish effective bearing structure between first line ship lock and second line ship lock foundation ditch, carry out duplicate protection to newly-built foundation ditch and established ship lock simultaneously, it is effectual to strut; the foundation pit supporting structure has high strength and convenient assembly and disassembly, and can be repeatedly utilized; under adjusting screw's cooperation, can adjust the tight degree in top of strutting the crossbeam both ends to the foundation ditch lateral wall, under limit screw's the effect of running through, reduce the assembly step of bracing piece, save installation time, overall structure is compact, and it is good to strut stability.

Description

Foundation pit support for ship lock extension

Technical Field

The utility model relates to a ship lock enlargement field, concretely relates to foundation ditch support for ship lock enlargement.

Background

The ship lock is a box-shaped navigation building which utilizes water filling and draining in a channel controlled by gates at two ends to lift the water level so that a ship can overcome the concentrated water level drop on the channel. In natural river, the flow rate is regulated, the canalization navigation is realized, and the concentrated water surface drop is formed on the canal by the stepped longitudinal section due to the limitation of terrain conditions and water surface gradient, so that ships can directly pass through the drop by means of special navigation buildings. The lock chamber is a chamber-shaped chamber for berthing a ship (or a fleet), and the water level in the lock chamber is adjusted by filling water or draining water in the lock chamber, so that the ship vertically ascends and descends between upstream and downstream water levels, and the water level difference of a concentrated channel is passed. When boats and ships went upstream by the low reaches, indoor water level falls to flushing with the low reaches water level, then opens the gate of low reaches lock head, and the lock room is gone into to the ship, closes the gate, and the watering is waited that the water level rises to flush the back with the upper reaches water level, opens the lock head gate of upper reaches, and the ship can go out the floodgate and navigate to the upper reaches through upper reaches approach channel. When the ship runs from upstream to downstream, the brake-passing operation procedure is opposite to the brake-passing operation procedure.

At present, the channel is upgraded at home and abroad mainly by combining the step canalization and channel improvement, wherein the reconstruction of an old lock and the new construction of a high-grade ship lock are the most important construction contents. Most newly-built two-line ship locks are limited by navigation water flow conditions and surrounding environments, and the lock sites are generally selected to be at positions which are parallel to and close to the original built ship locks, so that the arrangement of the foundation pits of the two-line ship locks influences the built ship locks to a certain extent in the ship lock extension construction, and the foundation pit enclosure is easy to deform greatly; and the traditional row pile structure has low rigidity, the existing supporting structure is sensitive to the requirement of water level, the supporting structure has low strength, and once large deformation occurs, the existing supporting structure is not beneficial to recycling (Wang Ding, Liu institute, Wanneng, Pengby, Tianhong Wei, a ship lock extension supporting structure and a ship lock extension method [ P ]. Hunan province: CN111424627A, 2020-07-17.).

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a ship lock is excavation supporting for enlargement to solve the problem that proposes among the above-mentioned background art.

The purpose of the utility model is realized through one of following technical scheme at least.

A foundation pit support for ship lock extension comprises a two-line ship lock foundation pit arranged on one side of a one-line ship lock in parallel, wherein two sides of the two-line ship lock foundation pit are enclosed by two primary underground continuous walls arranged in parallel, and primary high-pressure jet grouting piles are arranged on the outer sides of the two primary underground continuous walls respectively for supporting; a second-stage high-pressure rotary spraying pile is arranged between the first-stage high-pressure rotary spraying pile close to one side of the first ship lock and the first ship lock, a second-stage underground continuous wall is embedded between the second-stage high-pressure rotary spraying pile and the adjacent first-stage high-pressure rotary spraying pile, and a red copper sheet water stopping wall is arranged at the top of the second-stage underground continuous wall;

a foundation pit supporting structure is arranged in the foundation pit of the second-line ship lock, and comprises a waist beam, a supporting cross beam and an embedded strut; the waist beams are symmetrically arranged on the opposite surfaces of the two first-level underground continuous walls, and a plurality of layers are arranged up and down; the two waist beams on the same layer are connected with a supporting crossbeam, two ends of each supporting crossbeam are respectively provided with an adjusting screw matched and tightly propped against the waist beams, and the two adjacent upper and lower supporting crossbeams are connected through a reinforcing rod; a plurality of embedded struts are embedded underground in the foundation pit of the two-line ship lock at equal intervals and distributed under each supporting beam, and the bottom of the supporting beam at the lowest layer is connected with the embedded struts under the supporting beam through a plurality of supporting rods.

Furthermore, the bottoms of the two first-level underground continuous walls are connected with curtain grouting layers.

Furthermore, the outer side of the primary high-pressure jet grouting pile at the side far away from the front ship lock extends outwards and forms an inclined and upward jet concrete protective surface for strengthening the supporting strength of the primary high-pressure jet grouting pile.

Furthermore, the height of the second-stage high-pressure jet grouting pile is lower than that of the first-stage high-pressure jet grouting pile, and the top surface of the red copper sheet water stop wall is flush with the top surface of a ship lock.

Furthermore, hollow threaded slots are formed at two ends of each supporting cross beam for inserting and connecting the adjusting screw rods in a threaded manner; the positions of the waist beam corresponding to the supporting beams are respectively provided with a connecting hole, and the outer ends of the adjusting screws extend out of the supporting beams and are inserted into the corresponding connecting holes for screwing.

Furthermore, each bracing piece vertical fixation is in the bottom surface of the crossbeam is strutted to the lower floor, and each pre-buried pillar upper end stretches into in the second line ship lock foundation ditch and is provided with and supplies bracing piece male constant head tank, and each bracing piece lower extreme inserts in the constant head tank that corresponds, and all passes through stop screw through connection between each horizontal row inserts the bracing piece in the constant head tank, and the stop screw both ends are screwed up by the nut.

Furthermore, the limiting plate that all installs perpendicularly with the terminal surface butt of pre-buried pillar in the middle part of each bracing piece, bracing piece lower part and pre-buried pillar upper portion all correspond and offer the through-hole that supplies limiting screw to pass.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses set up double underground continuous wall supporting construction and double high pressure jet grouting pile supporting construction between a ray of ship lock and second line ship lock foundation ditch to cooperation curtain grout blanket and red copper sheet stagnant water wall establish effective bearing structure between a ray of ship lock and second line ship lock foundation ditch, carry out duplicate protection simultaneously to newly-built foundation ditch and built ship lock, strut effectually.

2. The utility model arranges a foundation pit supporting structure in the foundation pit of the second-line ship lock, has high strength and convenient disassembly and assembly, and can be repeatedly used; under adjusting screw's cooperation, can adjust the tight degree in top of strutting the crossbeam both ends to the foundation ditch lateral wall, under limit screw's the effect of running through, reduce the assembly step of bracing piece, save installation time, overall structure is compact, and it is good to strut stability.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention in the embodiment;

fig. 2 is a schematic view of a detailed structure of the wale according to the embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Example (b):

a foundation pit support for ship lock extension comprises a two-line ship lock foundation pit 2 arranged on one side of a one-line ship lock 1 in parallel, wherein two sides of the two-line ship lock foundation pit 2 are enclosed by two primary underground continuous walls 3 arranged in parallel, and primary high-pressure jet grouting piles 5 are respectively arranged on the outer sides of the two primary underground continuous walls 3 for supporting; a second-stage high-pressure rotary spraying pile 7 is arranged between the first-stage high-pressure rotary spraying pile 5 close to one side of the first ship lock 1 and the first ship lock 1, a second-stage underground continuous wall 8 is embedded between the second-stage high-pressure rotary spraying pile 7 and the adjacent first-stage high-pressure rotary spraying pile 5, and a red copper sheet water stopping wall 9 is arranged at the top of the second-stage underground continuous wall 8;

a foundation pit supporting structure is arranged in the second-line ship lock foundation pit 2 and comprises a waist beam 10, a supporting cross beam 11 and an embedded strut 14; the wales 10 are symmetrically arranged on the opposite surfaces of the two primary underground continuous walls 3, and are provided with a plurality of layers from top to bottom; the two waist beams 10 on the same layer are connected with supporting beams 11, two ends of each supporting beam 11 are respectively provided with an adjusting screw 12 which is matched with and tightly propped against the waist beams 10, and the two adjacent upper and lower supporting beams 11 are connected through a reinforcing rod 13; a plurality of embedded struts 14 are embedded under the two-line ship lock foundation pit 2 at equal intervals and distributed under each supporting beam 11, and the bottom of the supporting beam 11 at the lowest layer is connected with the embedded struts 14 under the supporting beam 11 through a plurality of support rods 15.

The bottom parts of the two first-level underground continuous walls 3 are both connected with curtain grouting layers 4.

The outer side of the primary high-pressure jet grouting pile 5 far away from one side of the ship lock 1 extends outwards and forms an inclined and upward jet concrete protective surface 6 for strengthening the supporting strength of the primary high-pressure jet grouting pile 5.

The height of the second-stage high-pressure jet grouting pile 7 is lower than that of the first-stage high-pressure jet grouting pile 5, and the top surface of the red copper sheet water stop wall 9 is flush with the top surface of the front ship lock 1.

Two ends of each supporting beam 11 form a hollow threaded slot for the insertion and threaded connection of an adjusting screw 12; as shown in fig. 2, a connecting hole 19 is formed in the wale 10 at a position corresponding to each supporting beam 11, and the outer end of each adjusting screw 12 extends out of the supporting beam 11 and is inserted into the corresponding connecting hole 19 to be screwed.

Each bracing piece 15 vertical fixation is in the bottom surface of the crossbeam 11 is strutted to the lower floor, and each pre-buried pillar 14 upper end stretches into in the second line ship lock foundation ditch 2 and is provided with and supplies bracing piece 15 male constant head tank, and each bracing piece 15 lower extreme inserts in the constant head tank that corresponds, and all through stop screw 17 through connection between each horizontal row inserts the bracing piece 15 in the constant head tank, and stop screw 17 both ends are screwed up by nut 18.

Limiting plates 16 which are abutted to the end faces of the embedded struts 14 are vertically arranged in the middle of each supporting rod 15, and through holes for the limiting screws 17 to pass through are correspondingly formed in the lower portions of the supporting rods 15 and the upper portions of the embedded struts 14.

The utility model discloses the theory of operation as follows:

two first-level underground continuous walls 3 enclose a building enclosure structure of a second-line ship lock foundation pit 2, a first-level underground continuous wall 3 and a second-level underground continuous wall 8 are arranged between a first-line ship lock 1 and the second-line ship lock foundation pit 2 to form a double-row underground continuous wall supporting structure, a first-level high-pressure rotary spraying pile 5 and a second-level high-pressure rotary spraying pile 7 are arranged to form a double-row high-pressure rotary spraying pile supporting structure, the bottom of the first-level underground continuous wall 3 is connected with a curtain grouting layer 4, a red copper sheet water stop wall 9 is arranged at the top of the second-level underground continuous wall 8, an effective supporting structure is built between the first-line ship lock foundation pit and the second-line ship lock foundation pit, the translation and the deformation of the foundation pit enclosure.

A foundation pit supporting structure is arranged in the two-line ship lock foundation pit 2, during assembly, embedded points are measured in the two-line ship lock foundation pit 2 in advance, a plurality of embedded pillars 14 are distributed and embedded in an array mode, the supporting beams 11 are installed between two waist beams 10 of each layer, the supporting beams 11 of the upper layer and the lower layer are connected into a whole through reinforcing rods 13, firstly, the supporting rods 15 of the supporting beams 11 of the lowest layer are inserted into the embedded pillars 14 of the corresponding transverse rows until limiting plates 16 in the middle of the supporting rods 15 are abutted to the end faces of the embedded pillars 14, then, the supporting rods 15 of each transverse row inserted into the embedded pillars 14 are connected in a penetrating mode through limiting screws 17 and are screwed by nuts 18, and longitudinal installation of the supporting beams 11 is; then correspondingly inserting the adjusting screws 12 at the two ends of the supporting beam 11 into the connecting holes 19 of the two waist beams 10, rotating the adjusting screws 12 to adjust the tightness degree of the supporting beam 12 against the waist beams 10, and finishing the transverse installation of the supporting beam 11; under adjusting screw 12's cooperation, can adjust the tight degree in top of strutting beam 11 both ends to the foundation ditch lateral wall, under stop screw 17's the effect of running through, reduced bracing piece 15's assembly step, save installation time, overall structure is compact, and it is good to strut stability, and intensity is high, and easy dismounting can carry out reuse.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A foundation pit support for ship lock extension comprises a two-line ship lock foundation pit (2) arranged on one side of a one-line ship lock (1) in parallel, and is characterized in that two sides of the two-line ship lock foundation pit (2) are surrounded by two primary underground continuous walls (3) arranged in parallel, and primary high-pressure rotary jet grouting piles (5) are arranged on the outer sides of the two primary underground continuous walls (3) respectively for supporting; a secondary high-pressure rotary spraying pile (7) is arranged between the primary high-pressure rotary spraying pile (5) close to one side of the primary ship lock (1) and the primary ship lock (1), a secondary underground continuous wall (8) is embedded between the secondary high-pressure rotary spraying pile (7) and the adjacent primary high-pressure rotary spraying pile (5), and a red copper sheet water stopping wall (9) is arranged at the top of the secondary underground continuous wall (8);

a foundation pit supporting structure is arranged in the second-line ship lock foundation pit (2) and comprises a waist beam (10), a supporting cross beam (11) and an embedded strut (14); the wales (10) are symmetrically arranged on the opposite surfaces of the two primary underground continuous walls (3), and are provided with a plurality of layers from top to bottom; supporting beams (11) are connected between two waist beams (10) on the same layer, adjusting screws (12) matched and tightly propped against the waist beams (10) are respectively installed at two ends of each supporting beam (11), and two adjacent supporting beams (11) are connected through reinforcing rods (13); a plurality of embedded struts (14) are embedded underground in the foundation pit (2) of the second-line ship lock at equal intervals and distributed under each supporting beam (11), and the bottom of the supporting beam (11) at the lowest layer is connected with the embedded struts (14) under the supporting beam (11) through a plurality of support rods (15).

2. The foundation pit support for ship lock extension of claim 1, wherein the curtain grouting layer (4) is connected to the bottom of each of the two primary underground continuous walls (3).

3. The foundation pit support for ship lock extension of claim 1, wherein the primary high pressure jet grouting pile (5) on the side far from the ship lock (1) extends outwards and forms an inclined upward jet concrete protecting surface (6).

4. The foundation pit support for ship lock extension according to claim 1, wherein the height of the secondary high-pressure jet grouting pile (7) is lower than that of the primary high-pressure jet grouting pile (5), and the top surface of the red copper sheet water stop wall (9) is flush with the top surface of the front ship lock (1).

5. The foundation pit support for ship lock extension according to claim 1, wherein hollow threaded slots are formed at both ends of each support beam (11) for insertion and threaded connection of adjusting screws (12); the positions of the waist beam (10) corresponding to the supporting beams (11) are respectively provided with a connecting hole (19), and the outer ends of the adjusting screws (12) extend out of the supporting beams (11) and are inserted into the corresponding connecting holes (19) for screwing.

6. The foundation pit support for ship lock extension of claim 1, wherein each support rod (15) is vertically fixed on the bottom surface of the lowest support beam (11), the upper end of each embedded strut (14) extends into the second-line ship lock foundation pit (2) and is provided with a positioning groove for inserting the support rod (15), the lower end of each support rod (15) is inserted into the corresponding positioning groove, the support rods (15) inserted into the positioning grooves in the transverse rows are connected in a penetrating manner through a limit screw (17), and the two ends of the limit screw (17) are screwed by nuts (18).

7. The foundation pit support for ship lock extension of claim 6, wherein a limiting plate (16) abutted against the end face of the embedded pillar (14) is vertically installed in the middle of each supporting rod (15), and through holes for the limiting screws (17) to pass through are correspondingly formed in the lower portion of each supporting rod (15) and the upper portion of the embedded pillar (14).