CN113585315B

CN113585315B - Sinking well with adjustable sinking frictional resistance

Info

Publication number: CN113585315B
Application number: CN202110987536.7A
Authority: CN
Inventors: 邵风行; 谢含军; 欧金辉; 池奥博; 李宏欣; 李云超; 尹骏; 叶嘉庭; 林寅鑫; 施旭锋
Original assignee: Ningbo Municipal Engineering Construction Group Co Ltd
Current assignee: Ningbo Municipal Engineering Construction Group Co Ltd
Priority date: 2021-08-26
Filing date: 2021-08-26
Publication date: 2022-10-21
Anticipated expiration: 2041-08-26
Also published as: CN113585315A

Abstract

The invention discloses a sinking frictional resistance adjustable sinking well, which comprises a well body, a frictional resistance adjusting unit and a data acquisition unit, wherein the well body comprises a well wall, the periphery of which is provided with a plurality of openings; the frictional resistance adjusting unit is arranged at the opening and corresponds to the opening one by one, the frictional resistance adjusting unit comprises a driver connected with the well body and an expansion piece connected with the driver, the expansion piece is connected with the well body in a sliding way through the opening, and the driver is used for pushing the expansion piece out of the well wall or retracting the expansion piece into the well wall; the data acquisition unit is arranged on the well body, is electrically connected with the driver and is used for acquiring the posture and the sinking data of the well body. The sinking frictional resistance adjustable open caisson provided by the invention can properly regulate and control the sinking resistance through the frictional resistance adjusting units arranged at different positions, and solves the problems of deviation of the attitude of the open caisson, even incapability of sinking or sudden sinking caused by deviation of sinking amounts at different parts during open caisson construction in the prior art. The invention has obvious effect and is suitable for wide popularization.

Description

Sinking well with adjustable sinking frictional resistance

Technical Field

The invention relates to the technical field of building construction, in particular to a sinking well with adjustable sinking frictional resistance.

Background

The open caisson is a well cylindrical structure, soil is dug in the open caisson, the open caisson is sunk to a designed elevation after overcoming the frictional resistance of a well wall by means of self gravity, and then the open caisson is subjected to concrete bottom sealing and is filled with a well hole, so that the open caisson becomes the foundation of a bridge abutment or other structures. The construction method is used for constructing the enclosure device of foundation pits of large-scale piers, sewage pump stations, large-scale equipment foundations, civil air defense shelters, shield assembly wells, underground driveways and station hydraulic foundations.

During open caisson construction, due to uncertainty of stratum and construction, deviation of subsidence amount of different parts is easy to occur, the attitude of the open caisson deviates, and the open caisson sometimes fails to sink or sinks suddenly. Sinking of the open caisson mainly depends on mutual balance of self weight and resistance, wherein the self weight is determined, and the side resistance and the end resistance have larger uncertainty. Therefore, in order to solve the above problems, it is necessary to design a new open caisson structure to solve the problems of deviation of open caisson attitude, even incapability of sinking or sudden sinking due to deviation of sinking amounts of different parts during open caisson construction.

Disclosure of Invention

In view of the above-mentioned drawbacks, the present invention provides an open caisson with adjustable sinking frictional resistance, which solves the problems of deviation of the attitude of the open caisson, even incapability of sinking or sudden sinking caused by deviation of sinking amounts of different parts during open caisson construction in the prior art.

The invention provides a sinking friction adjustable open caisson, which comprises:

the well body comprises a well wall with a plurality of openings arranged around;

the frictional resistance adjusting unit is arranged at the opening and corresponds to the opening one by one, the frictional resistance adjusting unit comprises a driver connected with the well body and an expansion piece connected with the driver, the expansion piece is connected with the well body in a sliding manner through the opening, and the driver is used for pushing the expansion piece out of the well wall or retracting the expansion piece into the well wall;

and the data acquisition unit is arranged on the well body, is electrically connected with the driver and is used for acquiring the posture and the sinking data of the well body.

Preferably, the drive is removably connected to the well body, the drive comprising:

the connecting piece is detachably connected with the well body;

one end of the telescopic regulator is fixedly connected with the connecting piece and is arranged in the opening;

and one end of the angle adjuster is connected with the other end of the telescopic adjuster, and the other end of the angle adjuster is connected with the telescopic piece and used for adjusting the angle of the telescopic piece.

Preferably, the telescopic member includes:

the supporting pieces are arranged in the openings and are in sliding connection with the openings, and the two supporting pieces are vertically symmetrical;

the friction piece is hinged with the two supporting pieces respectively and arranged between the two supporting pieces, and the friction piece is hinged with the angle regulator;

the shielding piece is connected with the supporting piece, the friction piece and the driver respectively and has an elastic structure.

Preferably, the angle adjuster includes:

the integral regulator is connected with the telescopic regulator;

one end of the middle regulator is connected with the integral regulator, and the other end of the middle regulator is hinged with the friction piece;

all the side regulators are hinged with the friction piece, and all the side regulators are provided with a plurality of middle regulators which are circumferentially and uniformly distributed on the whole regulator.

Preferably, the support piece is provided with a plurality of limiting grooves, limiting blocks in one-to-one correspondence with the limiting grooves are arranged in the limiting grooves, and the limiting blocks are connected with the telescopic regulator through elastomers.

Preferably, still include with the well body can dismantle the mounting of being connected, the mounting passes through the opening runs through the wall of a well, and be rectangular shape structure, be used for with well body and soil layer fixed connection.

Preferably, the well wall is a hollow prism structure, and the opening is arranged at a position close to a side edge on the side surface of the well wall.

Preferably, the other end of the telescopic piece connected with the driver is provided with an anti-slip layer.

Preferably, the well body still include with the partition wall that the wall of a well is connected, be equipped with a plurality of trompils on the partition wall, be equipped with on the trompil the frictional resistance adjusting unit, the wall of a well with the regional both sides that the partition wall is connected all are equipped with the opening.

Preferably, an elastic cushion layer is arranged on one side of the connecting piece connected with the well wall; an elastic isolation layer is arranged between the telescopic piece and the connecting piece and used for preventing water and dust.

According to the scheme, the sinking frictional resistance adjustable open caisson provided by the invention has the advantages that the attitude and sinking data of the open caisson are collected through the data collector; receiving a feedback signal of the data acquisition unit through a driver, and automatically moving according to the feedback signal so as to control the jacking and retraction of the telescopic piece; through the synergistic effect of the frictional resistance adjusting units at different positions, the well body sinks uniformly and controllably, and the problem of posture change or track deflection caused by environment uncertainty is avoided. The invention can properly regulate and control the sinking resistance, solves the problems of deviation of the posture of the open caisson and even incapability of sinking or sudden sinking caused by deviation of the sinking amount of different parts during the open caisson construction in the prior art, has obvious effect and is suitable for wide popularization.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a schematic structural view of a sinking frictional resistance adjustable caisson provided by an embodiment of the present invention;

fig. 2 is a schematic structural view of a frictional resistance adjusting unit of a sinking frictional resistance adjustable open caisson shown in fig. 1;

fig. 3 is a schematic structural diagram of a well body of the sinking frictional resistance adjustable open caisson shown in fig. 1;

fig. 4 is a schematic structural diagram of another sinking frictional resistance adjustable caisson provided by the embodiment of the invention;

FIG. 5 is a schematic structural diagram of a well body of the sinking frictional resistance adjustable open caisson shown in FIG. 4;

fig. 6 is a schematic structural view of the sinking frictional resistance adjustable caisson shown in fig. 4 in a state after the caisson reaches a specified position and is fixed;

fig. 7 is a schematic structural view of a frictional resistance adjusting unit of a sinking frictional resistance adjustable open caisson shown in fig. 4;

FIG. 8 isbase:Sub>A sectional view taken along line A-A of FIG. 7;

FIG. 9 is a schematic structural view illustrating a state in which the frictional force adjusting unit shown in FIG. 8 is angularly adjusted;

fig. 10 is a schematic sectional structural view of another frictional resistance adjusting unit for a sinking frictional resistance adjustable caisson according to an embodiment of the present invention.

In FIGS. 1-10:

1. a well body; 2. a driver; 3. a telescoping member; 4. a fixing member; 5. an anti-slip layer; 11. a well wall; 12. a partition wall; 21. a connecting member; 22. a telescopic adjuster; 23. an angle adjuster; 31. a support member; 32. a friction member; 33. a shield; 111. an opening; 121. opening a hole; 221. a limiting block; 222. an elastomer; 231. an integral regulator; 232. a middle regulator; 233. a peripheral side adjuster; 311. a limiting groove.

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 of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1

Referring to fig. 1 to 3, an embodiment of the present invention for a sinking frictional resistance adjustable caisson will now be described. The sinking frictional resistance adjustable open caisson comprises a well body 1, a frictional resistance adjusting unit and a data acquisition unit, wherein the well body 1 comprises a well wall 11, a plurality of openings 111 are formed in the periphery of the well wall 11; the frictional resistance adjusting unit is arranged at the opening 111 and corresponds to the opening 111 one by one, the frictional resistance adjusting unit comprises a driver 2 connected with the well body 1 and an extensible member 3 connected with the driver 2, the extensible member 3 is connected with the well body 1 in a sliding mode through the opening 111, and the driver 2 is used for pushing the extensible member 3 out of the well wall 11 or retracting the extensible member 3 into the well wall 11; the data acquisition unit is arranged on the well body 1, is electrically connected with the driver 2 and is used for acquiring the posture and sinking data of the well body 1.

The number of the openings 111 can be 8, and the frictional resistance adjusting unit plays a role in adjusting the friction force between the well body 1 and the soil layer. The telescopic part 3 can be a rectangular tubular structure, and the driver 2 is arranged inside the telescopic part 3 and can be an electric control jack. In the open caisson construction process, the posture and the sinking data of the well body 1 are collected in real time through a data collector arranged on the well body 1, when the fact that the sinking speed of the well body 1 is accelerated to reach a starting threshold value is detected, a detection signal is transmitted to a driver 2, the driver 2 is started, a telescopic piece 3 is pushed out of a well wall 11, the friction force between the well wall 11 and a soil layer is increased, and therefore the sinking speed of the well body 1 is effectively reduced; when the sinking speed of the well body 1 is slowed down to reach a stop threshold value, the driver 2 controls the telescopic piece 3 to be recycled into the well wall 11 according to the feedback signal, and the friction force between the well wall 11 and the soil layer is reduced; when the well body 1 is sunk, the stress is uneven due to the change of the external environment, and the well body deviates from the planned track or the posture changes, the data acquisition unit automatically analyzes the posture and the track information and controls the corresponding driver 2 to make a corresponding response, for example, if the well body 1 deviates from the track and sinks towards the lower right, the frictional resistance adjusting unit arranged on the right side is started, the driver 2 in the corresponding position controls the telescopic piece 3 to move, a leftward thrust is applied to the well body 1, and the well body 1 is adjusted back to the planned track.

Compared with the prior art, the sinking frictional resistance adjustable open caisson collects the posture and sinking data of the well body 1 through a data collector; the driver 2 receives a feedback signal of the data acquisition unit, and automatically moves according to the feedback signal so as to control the jacking and retraction of the telescopic part 3; through the synergistic effect of the frictional resistance adjusting units at different positions, the well body 1 sinks uniformly and controllably, and the problem of posture change or track deflection caused by environment uncertainty is avoided. The invention can properly regulate and control the sinking resistance, and solves the problems of deviation of the sinking amount of different parts during the open caisson construction period, and deviation of the open caisson posture, even incapability of sinking or sudden sinking in the prior art.

Example 2

As a specific implementation manner of the embodiment of the present invention, please refer to fig. 1 to 9 together, the structure of the sinking frictional resistance adjustable caisson provided in the present embodiment is substantially the same as that of embodiment 1, except that the driver 2 is detachably connected to the caisson body 1, the driver 2 includes a connecting member 21, a telescopic adjuster 22 and an angle adjuster 23, wherein the connecting member 21 is detachably connected to the caisson body 1; one end of the telescopic regulator 22 is fixedly connected with the connecting piece 21 and is arranged in the opening 111; one end of the angle adjuster 23 is connected to the other end of the telescopic adjuster 22, and the other end is connected to the telescopic member 3, for adjusting the angle of the telescopic member 3. The connecting piece 21 can be a rectangular plate and is detachably connected with the well body 1 through a bolt; the telescopic regulator 22 may be an electric control jack or an air cylinder, and is used for performing large-distance telescopic regulation on the telescopic part 3; the angle adjuster 23 performs telescopic adjustment of a minute distance and adjustment of a certain amount of angle with respect to the extensible member 3.

In this embodiment, the telescopic member 3 includes a supporting member 31, a friction member 32 and a shielding member 33, wherein the supporting member 31 is disposed in the opening 111 and slidably connected to the opening 111, and the two supporting members 31 are disposed symmetrically up and down; the friction piece 32 is hinged with the two supporting pieces 31 respectively and is arranged between the two supporting pieces 31, and the friction piece 32 is hinged with the angle adjuster 23; the shutter 33 is connected to the support member 31, the friction member 32, and the driver 2, respectively, and the shutter 33 is of a structure having elasticity.

The support member 31 and the shield member 33 enclose the telescopic adjuster 22 and the angle adjuster 23, and the shape of the support member 31 and the shield member 33 is matched with the shape of the opening 111, so that the telescopic member 3 can be completely accommodated in the opening 111 after being recovered. The friction member 32 is disposed on the same side of the support member 31 and the shutter 33, and the other sides of the support member 31 and the shutter 33 are connected to the connecting member 21 through an elastic isolating layer. The supporting piece 31 and the shielding piece 33 support the friction piece 32 together, and the friction piece 32 is in contact with the soil layer, so that the friction force between the well body 1 and the soil layer is increased. The support member 31 and the shielding member 33 also protect the driver 2, prevent water and soil, provide a good environment for the driver 2 to work, and prolong the service life. When the friction member 32 rotates, the supporting member 31 also displaces, and the shielding member 33 deforms accordingly, and the shielding member 33 may be a rubber sheet or a resin sheet.

In the present embodiment, the angle adjuster 23 includes an integral adjuster 231, a middle adjuster 232, and a peripheral side adjuster 233, wherein the integral adjuster 231 is connected to the telescopic adjuster 22; one end of the middle adjuster 232 is connected with the integral adjuster 231, and the other end is hinged with the friction piece 32; the peripheral side adjuster 233 is hinged to the friction member 32, and the plurality of peripheral side adjusters 233 are circumferentially and uniformly distributed on the overall adjuster 231 around the central adjuster 232. The overall adjuster 231 is pushed by the telescopic adjuster 22 to move in a large telescopic manner, and is used for fixing and supporting the middle adjuster 232 and the peripheral adjuster 233, and simultaneously moving the positions of the middle adjuster 232 and the peripheral adjuster 233 in a short distance; the middle adjuster 232 and the peripheral adjuster 233 may be cylinders or jacks, the middle adjuster 232 is hinged to the center of the friction member 32, and the friction member 32 rotates around the center; the circumferential side adjuster 233 supports the friction member 32 and adjusts the included angle between the friction member 32 and the horizontal plane by adjusting the extension amount of each circumferential side adjuster 233, thereby adjusting the stress condition of the well body 1 and avoiding the problem of uneven stress.

In this embodiment, the supporting member 31 is provided with a plurality of limiting grooves 311, the limiting grooves 311 are provided with limiting blocks 221 corresponding to the limiting grooves 311 one by one, and the limiting blocks 221 are connected with the telescopic adjuster 22 through the elastic body 222. The stopper 221 may be a long-strip-shaped structure with a convex cross section, which supports and limits the supporting element 31, the supporting element 31 slides along the length direction of the stopper 221, and meanwhile, when the friction element 32 rotates, the supporting element 31 displaces in the direction of the telescopic adjuster 22, which drives the stopper 221 to squeeze the elastic element 222, and the elastic element 222 may be a spring or an elastic sheet, which provides a supporting force for the stopper 221. It should be understood that the terms "length", "width", "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the well body 1, the frictional resistance adjustment unit, the fixing member 4, and the data collector and their constituent parts must have specific orientations, be constructed and operated in specific orientations, and thus, should not be construed as limiting the present invention.

In this embodiment, the well wall 11 is a hollow prism structure, and may be specifically a hollow rectangular cylinder, the opening 111 is disposed at a position close to a lateral edge on a side surface of the well wall 11, that is, two sides of four corners of the well wall 11 are respectively provided with 2 openings 111, and the well wall 11 is a structure provided with 8 openings 111. The opening 111 is arranged at a position close to the lateral edges, so that the plane between the edges can be well adjusted, and the overall stress of the well wall 11 is ensured to be more uniform.

In this embodiment, the other end of the expansion element 3 connected to the driver 2 is provided with an anti-slip layer 5, and the anti-slip layer 5 is used for increasing the friction between the expansion element 3 and the soil layer and may be a rubber layer or a plastic layer with anti-slip threads. Skid resistant course 5 can be dismantled with extensible member 3 and be connected, and skid resistant course 5 wraps up in extensible member 3 outsidely, protects extensible member 3, and when skid resistant course 5 damaged, the replacement was dismantled, can continue to use frictional resistance regulating unit to adjust well body 1, and extension frictional resistance regulating unit's life practices thrift the cost.

Example 3

As a specific implementation manner of the embodiment of the present invention, referring to fig. 1 to 10, the structure of the sinking frictional resistance adjustable caisson provided in this embodiment is substantially the same as that of embodiment 2, and the difference is that the sinking frictional resistance adjustable caisson further includes a fixing member 4 detachably connected to the caisson body 1, and the fixing member 4 penetrates through the caisson wall 11 through the opening 111 and has a strip-shaped structure for fixedly connecting the caisson body 1 with the soil layer. When the well body 1 sinks to the designed elevation, the frictional resistance adjusting unit is removed, the fixing piece 4 is fixed in the soil layer through the opening 111, the well body 1 is supported and fixed, and the well body 1 is prevented from continuously sinking or deviating. Meanwhile, the frictional resistance adjusting unit can be applied to other well bodies 1 and used circularly, so that the cost is saved, and the utilization rate is higher.

In this embodiment, the well body 1 further includes a partition wall 12 connected to the well wall 11, the partition wall 12 is provided with a plurality of openings 121, the openings 121 are provided with friction adjusting units, and both sides of an area where the well wall 11 is connected to the partition wall 12 are provided with openings 111. The position of opening 111 guarantees that the atress of well body 1 is more even, sets up the state to well body 1 that the frictional resistance regulating unit that sets up in opening 111 can be better simultaneously and adjusts, and well body 1 motion process is more stable.

In the embodiment, an elastic cushion layer is arranged on one side of the connecting piece 21 connected with the well wall 11, and the elastic cushion layer enables the connecting piece 21 to be connected with the well wall 11 more tightly and simultaneously is waterproof and anti-soil; an elastic isolation layer is arranged between the telescopic piece 3 and the connecting piece 21, and the elastic isolation layer can be a telescopic rubber film or a plastic film and is used for water and dust prevention. The elastic cushion layer can be a rubber pad or a resin pad, an elastic film is arranged in the middle of the elastic cushion layer and can be a plastic film or a latex film, the elastic film can enable the driver 2 and the extensible member 3 or the fixing member 4 to pass through, and the effects of water blocking and soil blocking are achieved. It is within the scope of the present disclosure to provide an elastic cushion layer and an elastic isolation layer that can achieve the above-described performance effects.

In this embodiment, referring to fig. 10, the telescopic member 3 is integrally formed as a wedge-shaped structure, specifically, the supporting member 31 is disposed obliquely, and the cross-sectional area of the opening surrounded by the supporting member 31 and the other side of the shielding member 33 connected to the telescopic member 3 is larger than the surface area of the friction member 32. The wedge structure makes 3 bottoms of extensible member fixed area bigger, and is fixed more firm, is favorable to increasing 3 holistic intensity of extensible member, increase of service life. The supporting member 31 may be a plate with a trapezoidal section, the sectional area of one end of the supporting member 31 connected with the friction member 32 is smaller than that of the other end, and the supporting force strength of the supporting member 31 is better. The surface of friction member 32 and soil layer contact can be for outside convex arc, the area of contact of increase and soil layer, and the effort that the contact produced is bigger, and the arc surface can produce the effect of excessive buffering simultaneously, plays certain guard action to whole outside outstanding extensible member 3.

The embodiments are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same or similar parts among the embodiments are referred to each other. Details which are not described in detail in the embodiments of the invention belong to the prior art which is known to the person skilled in the art.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A sinking frictional resistance adjustable open caisson is characterized by comprising:

the well body (1) comprises a well wall (11) with a plurality of openings (111) arranged around;

the frictional resistance adjusting unit is arranged at the opening (111) and corresponds to the opening (111) one by one, the frictional resistance adjusting unit comprises a driver (2) connected with the well body (1) and an extensible member (3) connected with the driver (2), the extensible member (3) is in sliding connection with the well body (1) through the opening (111), and the driver (2) is used for pushing the extensible member (3) out of the well wall (11) or retracting the extensible member into the well wall (11);

the data acquisition unit is arranged on the well body (1), is electrically connected with the driver (2) and is used for acquiring the posture and sinking data of the well body (1);

the driver (2) is detachably connected with the well body (1), and the driver (2) comprises:

the connecting piece (21) is detachably connected with the well body (1);

a telescopic regulator (22) with one end fixedly connected with the connecting piece (21) and arranged in the opening (111);

one end of the angle adjuster (23) is connected with the other end of the telescopic adjuster (22), and the other end of the angle adjuster is connected with the telescopic piece (3) and used for adjusting the angle of the telescopic piece (3);

the telescopic member (3) comprises:

the support piece (31) is arranged in the opening (111) and is in sliding connection with the opening (111), and the two support pieces (31) are arranged in a vertically symmetrical mode;

the friction piece (32) is hinged with the two supporting pieces (31) respectively and is arranged between the two supporting pieces (31), and the friction piece (32) is hinged with the angle regulator (23);

a shielding piece (33) respectively connected with the supporting piece (31), the friction piece (32) and the driver (2), wherein the shielding piece (33) is of an elastic structure;

the angle adjuster (23) comprises:

an integral adjuster (231) connected to the telescopic adjuster (22);

one end of the middle regulator (232) is connected with the integral regulator (231), and the other end of the middle regulator is hinged with the friction piece (32);

week side regulator (233), with friction piece (32) are articulated, week side regulator (233) be equipped with a plurality ofly and with middle part regulator (232) are central circumference equipartition in on whole regulator (231).

2. A sinking frictional resistance adjustable caisson according to claim 1, wherein said supporting member (31) is provided with a plurality of limiting grooves (311), said limiting grooves (311) are provided with limiting blocks (221) corresponding to said limiting grooves (311) one by one, said limiting blocks (221) are connected to said telescopic adjuster (22) through elastic bodies (222).

3. A sinking frictional resistance adjustable caisson according to claim 2, further comprising a fixing member (4) detachably connected to the caisson body (1), wherein the fixing member (4) penetrates through the caisson wall (11) through the opening (111) and is of a long strip structure, and is used for fixedly connecting the caisson body (1) to the soil layer.

4. A sinking frictional resistance adjustable caisson according to claim 3, wherein the well wall (11) is a hollow prism structure, and the opening (111) is arranged on the side surface of the well wall (11) near the lateral edge.

5. A sinking friction adjustable caisson according to claim 4, wherein the other end of the expansion piece (3) connected to the driver (2) is provided with an anti-slip layer (5).

6. A sinking frictional resistance adjustable caisson according to any one of claims 1 to 5, wherein the caisson body (1) further comprises a partition wall (12) connected with the well wall (11), the partition wall (12) is provided with a plurality of holes (121), the holes (121) are provided with the frictional resistance adjusting units, and the openings (111) are arranged on two sides of the area where the well wall (11) is connected with the partition wall (12).

7. A sinking frictional resistance adjustable caisson according to claim 6, wherein one side of the connecting piece (21) connected with the caisson wall (11) is provided with an elastic cushion layer; an elastic isolation layer is arranged between the telescopic piece (3) and the connecting piece (21), and the elastic isolation layer is used for preventing water and dust.