Micro-disturbance shaft type enclosure structure

Abstract

The utility model provides a micro-disturbance shaft type enclosure structure which is characterized in that an isolation enclosure ring defined by a plurality of vertical steel pipes is arranged on the periphery of a well completion mechanism, an annular ring beam is arranged between the isolation enclosure ring and the well completion mechanism, and the depth of the isolation enclosure ring is larger than that of the well completion mechanism; every two adjacent steel pipes are connected through an interlocking device arranged on the outer diameter, and each steel pipe is a single-section steel pipe or is formed by connecting a plurality of standard-section steel pipes end to end up and down. According to the micro-disturbance shaft type enclosure structure, the influence of open caisson construction on the surrounding environment can be effectively reduced, the construction efficiency and quality are improved, and the micro-disturbance shaft type enclosure structure has wide application prospects and practical value.

Description

Technical Field

[0001] The utility model relates to vertical shaft construction, in particular to a micro-disturbance shaft type enclosure structure. Background Art

[0002] Vertical shafts are an important project for humans to gain underground space, and they play an irreplaceable role in the development and utilization of underground space. With the acceleration of urbanization, the demand for the development of underground space is growing, and the scale of construction is also expanding. However, traditional vertical shaft construction methods, such as underground continuous walls and bored piles, are limited by many factors such as small construction sites and limited excavation depths. At this time, caisson technology has gradually gained favor with its unique advantages.

[0003] Caisson technology has the advantages of adapting to small sites and deep excavation depths. However, conventional caisson construction also has some problems that cannot be ignored, the most prominent of which is the disturbance to the surrounding environment. The main reasons are:

[0004] 1) When the caisson sinks, there is a height difference between the soil inside and outside the well. The soil under the blade foot is under the pressure of the deadweight of the soil column outside the well and the influence of the well body driving the soil during sinking, so that the soil outside the well is continuously squeezed into the well along the bottom of the blade foot.

[0005] 2) In addition, during the sinking process of the caisson, due to tilting, displacement and multiple corrections, the soil outside the well became loose, and there was a gap between the well wall and the soil. These reasons contributed to the destruction and collapse of the soil around the caisson. Utility Model Content

[0006] The utility model provides a caisson and a construction method for reducing the sensitive environment in a narrow space, that is, before the caisson is constructed, steel pipes with mutually locked mouths are pressed in to form a reliable isolation enclosure, effectively reducing the severe disturbance of the caisson construction to the surrounding environment. The specific plan is as follows:

[0007] A micro-disturbance wellbore type enclosure structure, wherein an isolation enclosure ring surrounded by a plurality of vertical steel pipes is arranged outside a well-forming mechanism, an annular ring beam is arranged between the isolation enclosure ring and the well-forming mechanism, and the depth of the isolation enclosure ring is greater than the depth of the well-forming mechanism;

[0008] The adjacent steel pipes are connected by an interlocking device arranged on the outer diameter, and the steel pipe is a single-section steel pipe or is formed by connecting a plurality of standard-section steel pipes end to end.

[0009] Furthermore, the interlocking device comprises a locking port and a locking pin respectively arranged on the outer diameters of two adjacent steel pipes, and the locking pin of any one steel pipe is axially inserted into the locking port of another adjacent steel pipe to connect the two adjacent steel pipes;

[0010] The surface of the interlocking device is wrapped with a water-stop tape or coated with a water-stop paint.

[0011] Furthermore, the locking mouth is a steel slot with an I-shaped groove or a wedge-shaped groove, and the locking pin is an I-shaped steel or a wedge-shaped steel that can be vertically inserted into the steel slot.

[0012] Furthermore, the lock port and the lock pin are integrally formed with the steel pipe, or

[0013] The locking port and the locking pin are fixed to the steel pipe by welding.

[0014] Furthermore, the steel pipe is filled with fluid reinforcement material.

[0015] Furthermore, the annular ring beam is any one of a steel structure, a cast-in-place concrete structure, and a precast concrete structure.

[0016] Furthermore, the ends of two upper and lower adjacent standard steel pipe sections are connected to each other via a longitudinal connecting device, and a waterstop strip is wound around the surface of the longitudinal connecting device or a waterstop coating is applied on the surface.

[0017] Furthermore, the longitudinal connecting device is a concave-convex socket-type joint, and the length of the socket-type joint is not less than 50 cm.

[0018] The advantages of the utility model are:

[0019] 1. The utility model adopts a micro-disturbance shaft type enclosure structure, and by setting an isolation enclosure ring, it effectively isolates the impact of caisson construction on the surrounding environment, reduces construction disturbance, and protects the stability of the surrounding environment of the underground space.

[0020] 2. The annular ring beam ensures the vertical verticality of the steel pipe press-in construction, effectively ensuring the accuracy and quality of the caisson construction. At the same time, the annular ring beam can also play the role of fixing and supporting the isolation enclosure ring, enhancing the overall stability of the enclosure structure.

[0021] 3. By setting up the interlocking device, adjacent steel pipes can be locked with each other, which enhances the stability and bearing capacity of the entire enclosure structure, effectively prevents displacement and tilting during the construction process, and ensures the smooth progress of the caisson construction.

[0022] 4. Filling the inside of the steel pipe with fluid reinforcement materials can enhance the compressive resistance and bearing capacity of the steel pipe, and further improve the stability and safety of the enclosure structure.

[0023] 5. The annular ring beam of the utility model can adopt various forms such as steel structure, cast-in-place concrete, prefabricated concrete structure, etc., and can be flexibly selected according to different engineering requirements and construction conditions, thereby improving the applicability and flexibility of the utility model.

[0024] 6. A longitudinal connecting device is provided to connect the upper and lower sections of the steel pipe to ensure the vertical verticality of the steel pipe construction. At the same time, the longitudinal connecting device is provided with a waterstop or waterstop coating to achieve lateral waterstopping, which can effectively prevent leakage during the construction process and ensure the construction quality and safety.

[0025] The micro-disturbance shaft type enclosure structure provided by the utility model can effectively reduce the impact of caisson construction on the surrounding environment, improve construction efficiency and quality, and has broad application prospects and practical value. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0027] Figure 1 A main structural schematic diagram of a micro-disturbance shaft type enclosure structure is provided for the utility model;

[0028] Figure 2 This is a top view of the micro-disturbance shaft enclosure structure;

[0029] Figure 3 It is a schematic diagram of the interlocking device at both ends of a single steel pipe;

[0030] Figure 4 It is a schematic diagram of the upper and lower steel pipes connected by a concave and convex socket joint;

[0031] Figure 5 This is a schematic diagram of constructing a concrete annular ring beam outside the caisson in Example 1;

[0032] Figure 6 This is a schematic diagram of pressing steel pipes section by section into the periphery of the annular ring beam in Example 1;

[0033] Figure 7 This is a schematic diagram of forming an isolation enclosure ring around the annular ring beam after all the steel pipes are pressed in in Example 1;

[0034] Figure 8 This is a schematic diagram of the prefabrication of the caisson structure in the first embodiment;

[0035] Fig. 9 It is a schematic diagram of pressing the caisson structure into the embodiment 1;

[0036] Fig.10 It is a schematic diagram of the caisson structure being pressed into place in the first embodiment;

[0037] Fig.11 This is a schematic diagram of the bottom sealing construction of the caisson in the first embodiment;

[0038] Fig.12 This is a schematic diagram of the construction of the base plate of the underground structure of the caisson in Example 1. DETAILED DESCRIPTION

[0039] In the following description, a large number of specific details are given to provide a more thorough understanding of the utility model. However, it is obvious to those skilled in the art that the utility model can be implemented without one or more of these details. In other examples, in order to avoid confusion with the utility model, some technical features known in the art are not described.

[0040] In order to thoroughly understand the present invention, detailed steps and detailed structures will be presented in the following description to illustrate the technical solution of the present invention. The preferred embodiments of the present invention are described in detail below, but in addition to these detailed descriptions, the present invention may also have other implementations.

[0041] Reference Figure 1-4 As shown, the utility model provides a micro-disturbance shaft type enclosure structure, in which an isolation enclosure ring surrounded by a plurality of vertical steel pipes 1 is arranged on the periphery of the well-forming mechanism 4. The top of the isolation enclosure ring is flush with the ground, and the bottom is buried slightly deeper than the bottom depth of the underground structure of the well-forming mechanism 4. An annular ring beam 2 is arranged between the isolation enclosure ring and the top of the well-forming mechanism 4. The annular ring beam 2 has a positioning function to ensure the vertical verticality of the steel pipe construction. The material of the annular ring beam 2 includes but is not limited to steel structure, cast-in-place concrete, and precast concrete structure.

[0042] Adjacent steel pipes 1 are connected by an interlocking device 3 arranged on the outer diameter. The surface of the interlocking device 3 is wrapped with a water stop tape or coated with a water stop paint to play a water stop role. The interlocking device 3 includes a locking port 31 and a locking pin 32 respectively arranged on the outer diameters of two adjacent steel pipes 1. The locking pin 32 of any steel pipe 1 is axially inserted into the locking port 31 of another adjacent steel pipe 1 to connect the two adjacent steel pipes 1.

[0043] In one embodiment, the lock mouth 31 is a steel slot with an I-shaped slot or a wedge-shaped slot, and the lock pin 32 is an I-shaped steel or a wedge-shaped steel that can be vertically inserted into the steel slot. The lock mouth 31 and the lock pin 32 can be integrally formed with the steel pipe 1, or the lock mouth 31 and the lock pin 32 can be fixed on both sides of the steel pipe 1 by welding.

[0044] The steel pipe 1 is formed by connecting a plurality of standard steel pipes end to end, and the ends of two adjacent standard steel pipes 1 are connected to each other through a longitudinal connection device. The surface of the longitudinal connection device is wrapped with a water stop strip or coated with a water stop coating to achieve side water stop. In a preferred embodiment, the longitudinal connection device is a concave-convex socket joint (such as Figure 4 As shown), the length of the socket joint is not less than 50cm, and the concave and convex socket joint has a positioning function to ensure the vertical verticality of the steel pipe construction.

[0045] In one embodiment, if the well depth is relatively shallow, the retaining structure can be directly used as a retaining and water-stopping structure, which is conducive to simplifying the structure.

[0046] The steel pipe 1 is pressed into the soil by static pressure method, middle excavation method, etc. Before construction, the bottom of the steel pipe 1 is not closed, and the inside of the steel pipe 1 is filled with fluid reinforcement material to improve the rigidity of the support structure.

[0047] Embodiment 1

[0048] A certain project is close to surrounding houses and other buildings, and the construction space on the site is small, so a caisson with a diameter of 15m and a depth of 30m is being constructed.

[0049] In this embodiment, the steel pipe 1 is a steel pipe with an open bottom end, a diameter of the steel pipe is 800 mm, and a wall thickness of the steel pipe is 2 cm.

[0050] In this embodiment, the steel pipes 1 are connected to each other by using an interlocking device 3, and the locking mouth is self-waterproof or coated with a water-stopping material, so that it has a certain water-stopping ability.

[0051] In this embodiment, the bottom of the steel pipe 1 is buried to a depth of 35 m, which is slightly greater than the bottom depth of the caisson underground structure 3 .

[0052] In this embodiment, the steel pipe 1 is composed of a number of standard sections, and the sections are connected to each other through male and female socket joints, and the length of the joints is not less than 50 cm.

[0053] In this embodiment, the steel pipe is sunk into the soil and is pressed into the soil by a static pile driver.

[0054] In this embodiment, concrete is filled into the steel pipe to improve the rigidity of the steel pipe.

[0055] In this embodiment, before the steel pipe is constructed, a concrete annular ring beam is constructed along the outer periphery of the caisson, and the ring beam size is 1m×1m. Then, the steel pipe is constructed close to the annular ring beam to control the verticality of the steel pipe.

[0056] according to Figure 5-Figure 12 The main steps shown in the figure are used for on-site construction, which specifically include the following construction steps:

[0057] 1) Construct a concrete ring beam 2 outside the caisson, such as Figure 5 As shown;

[0058] 2) The surrounding lock-mouth steel pipes are pressed into the construction section by section to form an isolation enclosure ring, such as Figure 6-7 As shown;

[0059] 3) Prefabrication of caisson structure, such as Figure 8 As shown;

[0060] 4) The soil in the caisson is excavated underwater without drainage;

[0061] 5) The caisson structure is raised and sunk to the bottom, such as Figure 9-10 As shown;

[0062] 6) Construction of caisson bottom sealing 5, such as Fig.11 As shown;

[0063] 7) Pumping out water from underground structures of caissons;

[0064] 8) Construction of the underground structure bottom plate 6 of the caisson, such as Fig.12 shown.

[0065] This example introduces a structure and construction method for reducing disturbance caused by caisson construction in a narrow space and sensitive environment, which can provide a simple, economical and effective treatment method for caisson construction in narrow space and sensitive environment in the future.

[0066] The above describes the preferred embodiments of the utility model. It should be understood that the utility model is not limited to the above-mentioned specific implementation methods, and the devices and structures that are not described in detail should be understood to be implemented in a common manner in the art; any technician familiar with the art can use the above-disclosed methods and technical contents to make many possible changes and modifications to the technical solutions of the utility model without departing from the scope of the technical solution of the utility model, or modify them into equivalent embodiments of equivalent changes, which does not affect the essential content of the utility model. Therefore, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the utility model without departing from the content of the technical solution of the utility model still falls within the scope of protection of the technical solution of the utility model.

Claims

1. A micro-disturbance shaft enclosure structure, characterized in that: An isolation enclosure ring formed by a plurality of vertical steel pipes (1) is arranged on the periphery of the well-forming mechanism (4), an annular ring beam (2) is arranged between the isolation enclosure ring and the well-forming mechanism (4), and the depth of the isolation enclosure ring is greater than the depth of the well-forming mechanism (4); Adjacent steel pipes (1) are connected via an interlocking device (3) arranged on the outer diameter, and the steel pipe (1) is a single-section steel pipe or is formed by connecting a plurality of standard-section steel pipes end to end.

2. A micro-disturbance shaft enclosure structure as claimed in claim 1, characterized in that: The interlocking device (3) comprises a locking port (31) and a locking pin (32) respectively arranged on the outer diameters of two adjacent steel pipes (1); the locking pin (32) of any one steel pipe (1) is axially inserted into the locking port (31) of another adjacent steel pipe (1) to connect the two adjacent steel pipes (1); The surface of the interlocking device (3) is wrapped with a water-stopping tape or coated with a water-stopping paint.

3. A micro-disturbance shaft enclosure structure as claimed in claim 2, characterized in that: The locking opening (31) is a steel slot with an I-shaped groove or a wedge-shaped groove, and the locking pin (32) is an I-shaped steel or a wedge-shaped steel that can be vertically inserted into the steel slot.

4. A micro-disturbance shaft enclosure structure as claimed in claim 3, characterized in that: The locking port (31) and the locking pin (32) are integrally formed with the steel pipe (1), or The locking port (31) and the locking pin (32) are fixed to the steel pipe (1) by welding.

5. A micro-disturbance shaft enclosure structure as claimed in claim 1, characterized in that: The steel pipe (1) is filled with fluid reinforcement material.

6. A micro-disturbance shaft enclosure structure as claimed in claim 1, characterized in that: The annular ring beam (2) is any one of a steel structure, a cast-in-place concrete structure, and a prefabricated concrete structure.

7. A micro-disturbance shaft enclosure structure as claimed in claim 1, characterized in that: The ends of two upper and lower adjacent standard steel pipe sections (1) are connected to each other via a longitudinal connection device, and a water stop strip is wound around the surface of the longitudinal connection device or a water stop paint is applied to the surface.

8. A micro-disturbance shaft enclosure structure as claimed in claim 7, characterized in that: The longitudinal connecting device is a concave-convex socket-type joint, and the length of the socket-type joint is not less than 50 cm.

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