Vertical shaft supporting beam and construction method thereof

Abstract

The invention discloses a vertical shaft supporting beam and a construction method thereof, and belongs to the technical field of underground construction, and the vertical shaft supporting beam comprises a supporting body, a guide piece and a blocking piece. Wherein at least two connecting ends are formed on the supporting main body; the guide piece is arranged on the connecting end, a guide groove is formed in the inner wall of the shaft and extends in the height direction of the shaft, and the guide piece can be slidably connected with the guide groove; the blocking piece is movably connected to the supporting body and can stretch out or retract in the radial direction of the shaft, a check block is arranged on the inner wall of the shaft, and when the blocking piece stretches out, the check block can abut against the blocking piece, so that the supporting body is limited to move along the shaft. The vertical shaft supporting beam is adopted in the vertical shaft supporting beam construction method. The safety risk of underwater operation is reduced, construction personnel do not need to carry out complex and dangerous operation underwater, the life safety of the personnel is guaranteed, the construction procedure is simplified, and the construction efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of underground construction, and in particular to a shaft support beam and a construction method thereof. Background Art

[0002] Due to its large size, large-diameter shafts are subject to greater water and soil pressures. In order to withstand these pressures, the underwater bottom cover needs to have sufficient strength and stability, so the thickness of the bottom cover is usually designed to be larger. However, during the concrete pouring process, the hydration heat generated inside the larger bottom cover is difficult to dissipate due to the larger bottom cover volume, resulting in a larger temperature gradient. In addition, the bottom cover concrete will shrink during the coagulation and hardening process. The thicker bottom cover is prone to temperature cracks due to uneven shrinkage. At present, the method of constructing support beams at the bottom of the shaft is generally used to reduce the thickness of the bottom cover.

[0003] The construction methods of support beams are generally divided into two types: pre-construction and post-construction. The pre-construction method usually starts with the construction of support beams in the early stages of shaft construction before other construction processes. However, due to the early construction of support beams, the space inside the shaft will be occupied, interfering with the normal operation trajectory of the robot arm in the shaft. The robot arm may collide with support beams that have not been fully formed during operation, or change the operation path to avoid support beams, thus affecting the quality and efficiency of construction.

[0004] The post-construction method of supporting beams is to construct the supporting beams after the main structure of the shaft has been constructed to a certain extent. Generally, the foundation preparation work is completed underwater first, such as cleaning the base, setting embedded parts, etc. Then the prefabricated supporting beam components are transported to the designated location underwater for installation, or the supporting beams are directly cast on site underwater. However, underwater operations face many difficulties, such as low underwater visibility and difficulty in operation for construction personnel; water pressure will affect construction equipment and personnel; the impact of water flow may cause deviations in the construction position, etc. This not only increases the difficulty of construction, but also increases the safety risks during the construction process. Summary of the invention

[0005] The purpose of the present invention is to provide a shaft support beam and a construction method thereof, so as to solve the technical problems existing in the prior art that the construction method of the support beam first is easy to interfere with the subsequent construction process, and the construction method of the support beam afterwards requires underwater operation, which is difficult to operate and has safety hazards.

[0006] As conceived above, the technical solution adopted by the present invention is:

[0007] A shaft support beam, comprising:

[0008] A supporting body, wherein at least two connecting ends are formed on the supporting body;

[0009] A guide member is arranged on the connecting end, a guide groove is provided on the inner wall of the wellbore, the guide groove extends along the height direction of the wellbore, and the guide member can be slidably connected to the guide groove;

[0010] A blocking member is movably connected to the supporting body, and the blocking member can be extended or retracted in the radial direction of the wellbore. A blocking block is provided on the inner wall of the wellbore. When the blocking member is extended, the blocking block can abut against the blocking member, thereby limiting the movement of the supporting body along the wellbore.

[0011] Preferably, two connection ends are formed on the support body, and the two connection ends are symmetrically arranged with respect to the support body.

[0012] Preferably, two guide members are provided on each of the connecting ends, and the two guide members are arranged at intervals along the circumference of the wellbore.

[0013] Preferably, a return spring is provided between the blocking member and the supporting body, and the stopper can push the blocking member to retract, thereby compressing the return spring.

[0014] Preferably, a guiding slope is formed on one side of the blocking member close to the block, and the guiding slope has a low end away from the block and a high end adjacent to the block. During the lowering process of the support body, part of the block can move relatively from the low end to the high end along the guiding slope, thereby pushing the blocking member to retract.

[0015] Preferably, the supporting body comprises a beam body and a steel member, the steel member is arranged at both ends of the beam body, and the steel member and the beam body are connected by anchoring steel bars.

[0016] On the other hand, the present invention also provides a method for constructing a shaft support beam, using the above-mentioned shaft support beam, comprising:

[0017] Matching the guide member with the guide groove, and lowering the support body along the inner wall of the wellbore;

[0018] After the supporting body passes through the stopper, the blocking member extends out;

[0019] After the support body is lowered to the target position, concrete is poured into the gap between the shaft and the support body.

[0020] Preferably, a bearing member is provided on the inner wall of the shaft, and when the supporting body is lowered to the target position, the supporting body can abut against the bearing member.

[0021] Preferably, a shear groove is provided on the bearing member.

[0022] Preferably, the support body is provided with casting holes and drainage holes along the thickness direction thereof.

[0023] Beneficial effects of the present invention:

[0024] The shaft support beam proposed in the present invention, during the construction process, firstly cooperates the guide member with the guide groove, and lowers the support body along the inner wall of the shaft through the lifting equipment; after the support body passes through the block, the blocking member is extended; until the support body is lowered to the target position, concrete is poured into the gap between the shaft and the support body, so that the support body and the inner wall of the shaft are consolidated together to form an overall force system.

[0025] The present invention adopts a prefabricated shaft support beam, which not only avoids the interference problem of subsequent construction in the traditional construction of the support beam, but also does not require construction personnel to perform complex and dangerous operations underwater, thereby reducing the safety risk of underwater operations, simplifying the construction process, and improving construction efficiency. Through the cooperation of the guide member and the guide groove, precise guidance is provided for the installation of the support body. During the construction process, the guide member can slide smoothly along the guide groove, ensuring that the support body can accurately reach the predetermined position, thereby improving the accuracy of the installation. In addition, the design of the blocking member achieves a one-way blocking effect. When the support body is lowered, the blocking member can shrink, thereby ensuring that the support body passes through the block smoothly, avoiding interference during the movement. When the support body completely passes through the block, the blocking member extends and abuts against the block, effectively limiting the support body, and preventing the displacement of the support body due to expansion of the bottom concrete and other reasons, thereby ensuring the stability of the support beam in long-term use. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a top view of a shaft support beam provided in Embodiment 1 of the present invention;

[0027] Figure 2 yes Figure 1 The enlarged view of point A in the middle;

[0028] Figure 3 is a schematic structural diagram of a blocking member provided in Embodiment 1 of the present invention;

[0029] Figure 4 is a first structural schematic diagram of a shaft support beam provided in Embodiment 1 of the present invention;

[0030] Figure 5 is a second structural schematic diagram of the shaft support beam provided in the first embodiment of the present invention;

[0031] Figure 6 is a third structural schematic diagram of the shaft support beam provided in the first embodiment of the present invention;

[0032] Figure 7 It is a partial structural schematic diagram of the shaft support beam provided in the first embodiment of the present invention.

[0033] In the figure:

[0034] 100, shaft; 101, stopper; 102, bearing member; 103, shear groove; 104, casting hole; 105, drainage hole; 106, guide groove;

[0035] 1. Support body; 10. Connection end; 11. Beam body; 12. Steel member; 13. Anchor steel bar;

[0036] 2. Guide parts;

[0037] 3. blocking member; 31. guiding inclined surface; 311. lower end portion; 312. higher end portion;

[0038] 4. Return spring;

[0039] 5. Concrete. DETAILED DESCRIPTION

[0040] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0041] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0043] The technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods.

[0044] Embodiment 1

[0045] See also Figures 1 to 7 The shaft support beam provided by the embodiment of the present invention comprises a support body 1, a guide member 2 and a blocking member 3. Among them, at least two connection ends 10 are formed on the support body 1; the guide member 2 is arranged on the connection end 10, and a guide groove 106 is provided on the inner wall of the shaft 100, and the guide groove 106 extends along the height direction of the shaft 100, and the guide member 2 can be slidably connected with the guide groove 106; the blocking member 3 is movably connected to the support body 1, and the blocking member 3 can be extended or retracted along the radial direction of the shaft 100, and a block 101 is arranged on the inner wall of the shaft 100, and when the block 3 is extended, the block 101 can abut against the block 3, thereby limiting the movement of the support body 1 along the shaft 100.

[0046] Generally speaking, the wellbore 100 extends in the vertical direction, and the support body 1 is horizontally arranged in the wellbore 100. For the convenience of description in conjunction with the drawings, the directions below are described in accordance with the directions shown in the drawings, but are not limited thereto.

[0047] During the construction of the shaft support beam proposed in the present invention, the guide member 2 is first matched with the guide groove 106, and the support body 1 is lowered along the inner wall of the shaft 100 by a lifting device; after the support body 1 passes through the block 101, the blocking member 3 is extended; until the support body 1 is lowered to the target position, concrete 5 is poured into the gap between the shaft 100 and the support body 1, so that the support body 1 and the inner wall of the shaft 100 are consolidated together to form an overall force system.

[0048] The present invention adopts a prefabricated shaft support beam, which not only avoids the interference problem of subsequent construction in the traditional construction of the support beam, but also does not require construction personnel to perform complex and dangerous operations underwater, thereby reducing the safety risk of underwater operations, simplifying the construction process, and improving construction efficiency. Through the cooperation of the guide member 2 and the guide groove 106, precise guidance is provided for the installation of the support body 1. During the construction process, the guide member 2 can slide smoothly along the guide groove 106, ensuring that the support body 1 can accurately reach the predetermined position, thereby improving the accuracy of the installation. In addition, the design of the blocking member 3 achieves a one-way blocking effect. When the support body 1 is lowered, the blocking member 3 can shrink, thereby ensuring that the support body 1 passes through the block 101 smoothly, avoiding interference during the movement. When the support body 1 completely passes through the block 101, the blocking member 3 extends and abuts against the block 101, effectively limiting the support body 1, and preventing the bottom sealing concrete 5 from causing the support body 1 to shift due to expansion and other reasons, thereby ensuring the stability of the support beam in long-term use.

[0049] The specific structure of the shaft support beam is explained below.

[0050] About the support body 1. The support body 1 includes a beam body 11 and a steel member 12. The steel member 12 is arranged at both ends of the beam body 11, and the steel member 12 and the beam body 11 are connected by anchoring steel bars 13. The steel member 12 has high strength and toughness. Being arranged at both ends of the beam body 11 can enhance the bearing capacity and anti-deformation capacity of the ends of the support body 1, and better cope with the pressure from the wellbore 100 and external stress conditions. The steel member 12 is connected to the beam body 11 by anchoring steel bars 13, which improves the reliability and stability of the connection, ensures that the components will not loosen or separate during long-term use, and thus guarantees the overall performance of the support body 1.

[0051] Specifically, the support body 1 is connected to the inner wall of the wellbore 100 through the connection end 10. In this embodiment, two connection ends 10 are formed on the support body 1, and the two connection ends 10 are symmetrically arranged with respect to the support body 1. The symmetrical structural design helps to evenly distribute the pressure and load borne by the support body 1 to the two connection ends 10, thereby reducing local stress concentration and improving the overall stability and reliability of the support body 1. In addition, the symmetrical structure also makes the installation process more convenient and efficient, reduces the difficulty of construction, and ensures the construction quality.

[0052] In this embodiment, the support body 1 is in a rectangular shape, and the two connection ends 10 are respectively located at two ends of the support body 1 in the length direction.

[0053] In other embodiments, the support body 1 may also be cross-shaped, circular or annular, etc. When the support body 1 is cross-shaped, the support body 1 has four connection ends 10, which are respectively located at the four end points of the support body 1; and when the support body 1 is circular or annular, any number of connection ends 10 may be arranged on the periphery of the support body 1, such as four connection ends 10, with the angle between two adjacent connection ends 10 being 90 degrees; or six connection ends 10, with the angle between two adjacent connection ends 10 being 60 degrees, etc. The shape of the support body 1, the number of connection ends 10 and the arrangement position are not limited here.

[0054] Two guide members 2 are arranged on each connection end 10, and the two guide members 2 are arranged at intervals along the circumference of the wellbore 100. Through the joint action of multiple guide members 2, the guiding accuracy and stability of the support body 1 during the lowering process are improved, and the support beam can be more effectively guided to be accurately installed along the predetermined trajectory, reducing installation deviation and ensuring construction quality. The two guide members 2 arranged at intervals can better share the lateral force and impact force during the installation process, reduce the force on a single guide member 2, and thus reduce the wear and damage of the guide member 2.

[0055] It is understandable that, in this embodiment, the guide member 2 is a guide steel plate, and the guide groove 106 is configured to conform to the guide steel plate. In other embodiments, the guide member 2 may also be a guide slider, a guide wheel, etc., and its specific form is not limited here, as long as the guide member 2 can achieve the guiding effect on the support body 1.

[0056] The blocking member 3 can be extended and abutted against the block 101, thereby achieving a limiting effect on the support body 1. Specifically, a return spring 4 is provided between the blocking member 3 and the support body 1, and the block 101 can push the blocking member 3 to retract, thereby compressing the return spring 4. When the block 101 contacts the blocking member 3 and pushes it to retract, the return spring 4 can buffer part of the impact force, avoid component damage caused by hard collision, and extend the service life of the blocking member 3 and related components. In addition, the return spring 4 can ensure that the blocking member 3 automatically returns to the extended state when not affected by external force, thereby achieving a reliable limiting function without actively driving the blocking member 3 to extend, thereby improving the movement efficiency of the blocking member 3.

[0057] See also Figure 3 The side of the blocking member 3 close to the block 101 forms a guiding slope 31, and the guiding slope 31 has a low end 311 away from the block 101 and a high end 312 adjacent to the block 101. During the lowering process of the support body 1, part of the block 101 can move relatively from the low end 311 to the high end 312 along the guiding slope 31, thereby pushing the blocking member 3 to retract. When the support body 1 completely passes through the block 101, the blocking member 3 loses the thrust of the block 101, and the return spring 4 recovers its deformation and stretches, thereby driving the blocking member 3 to extend, achieving the limiting effect on the support body 1.

[0058] In this embodiment, the blocking member 3 is a wedge-shaped block. In other embodiments, the blocking member 3 can also be actively driven to extend or retract the blocking member 3 by a telescopic rod, a hydraulic rod or other injection telescopic device, which will not be described in detail here.

[0059] Embodiment 2

[0060] The embodiment of the present invention further provides a method for constructing a shaft support beam, using the above-mentioned shaft support beam, comprising:

[0061] The guide member 2 is matched with the guide groove 106, and the support body 1 is lowered along the inner wall of the wellbore 100; during the lowering process, part of the block 101 moves relatively from the lower end 311 to the high end 312 along the guide slope 31, thereby pushing the blocking member 3 to retract.

[0062] After the support body 1 passes through the stopper 101, the blocking member 3 loses the thrust of the stopper 101, and the return spring 4 recovers its deformation and stretches, thereby driving the blocking member 3 to extend;

[0063] When the support body 1 is lowered to the target position, concrete 5 is poured into the gap between the shaft 100 and the support body 1 .

[0064] In order to improve the stability of the support body 1 at the target position, a bearing member 102 is provided on the inner wall of the shaft 100, and when the support body 1 is lowered to the target position, the support body 1 can abut against the bearing member 102. On the one hand, the bearing member 102 provides clear positioning and stable support for the lowered support body 1, ensuring that the support body 1 can accurately reach the designed target position, thereby effectively improving the accuracy and precision of the construction and avoiding subsequent problems caused by position deviation. On the other hand, the bearing member 102 can bear part of the weight of the support body 1, disperse the load borne by the support body 1, reduce the concentration of force at the connection between the support body 1 and the shaft 100, help reduce fatigue damage to the support body 1, and extend the service life and reliability of the support body 1.

[0065] The bearing member 102 is an existing corbel, which is an existing structure in the art, and its specific structure will not be described in detail here.

[0066] In order to facilitate the pouring of concrete 5, pouring holes 104 and drainage holes 105 are provided on the support body 1 and the bearing member 102 along the thickness direction thereof. The provision of the pouring holes 104 facilitates the pouring of materials such as concrete 5 into the gap between the support body 1 and the bearing member 102 during the construction process, ensures that the filling is dense, and enhances the stability and integrity of the connection. The drainage holes 105 can timely remove the moisture that may accumulate during the construction process, and avoid the adverse effects of accumulated water on the construction quality and structural stability. Effective drainage prevents water pressure from damaging the support structure, and at the same time reduces the quality problems of the concrete 5 caused by excessive moisture during the solidification process.

[0067] Specifically, the bearing member 102 is provided with a shear groove 103 , which can effectively disperse and withstand the shear force from the supporting body 1 , thereby enhancing the ability of the bearing member 102 to resist horizontal forces.

[0068] The above embodiments are only to illustrate the basic principles and characteristics of the present invention. The present invention is not limited by the above embodiments. Without departing from the spirit and scope of the present invention, the present invention may be subject to various changes and modifications, which are within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A shaft support beam, characterized in that: include: A supporting body (1), wherein at least two connecting ends (10) are formed on the supporting body (1); A guide member (2) is arranged on the connecting end (10); a guide groove (106) is provided on the inner wall of the wellbore (100); the guide groove (106) extends along the height direction of the wellbore (100); and the guide member (2) can be slidably connected to the guide groove (106); A blocking member (3) is movably connected to the supporting body (1), and the blocking member (3) can be extended or retracted in the radial direction of the wellbore (100). A blocking block (101) is provided on the inner wall of the wellbore (100). When the blocking member (3) is extended, the blocking block (101) can abut against the blocking member (3), thereby limiting the movement of the supporting body (1) along the wellbore (100).

2. The shaft support beam according to claim 1, characterized in that: Two connection ends (10) are formed on the support body (1), and the two connection ends (10) are symmetrically arranged with respect to the support body (1).

3. The shaft support beam according to claim 2, characterized in that: Two guide members (2) are arranged on each of the connecting ends (10), and the two guide members (2) are arranged at intervals along the circumference of the wellbore (100).

4. The shaft support beam according to claim 1, characterized in that: A return spring (4) is arranged between the blocking member (3) and the supporting body (1), and the stopper (101) can push the blocking member (3) to retract, thereby compressing the return spring (4).

5. The shaft support beam according to claim 4, characterized in that: A guiding slope (31) is formed on a side of the blocking member (3) close to the blocking block (101); the guiding slope (31) has a low end (311) away from the blocking block (101) and a high end (312) close to the blocking block (101); during the lowering process of the supporting body (1), part of the blocking block (101) can move relatively along the guiding slope (31) from the low end (311) to the high end (312), thereby pushing the blocking member (3) to retract.

6. The shaft support beam according to any one of claims 1 to 5, characterized in that: The supporting body (1) comprises a beam body (11) and a steel component (12); the steel component (12) is arranged at both ends of the beam body (11); and the steel component (12) and the beam body (11) are connected via anchoring steel bars (13).

7. A method for constructing a shaft support beam, characterized in that: The shaft support beam according to any one of claims 1 to 6 comprises: The guide member (2) is matched with the guide groove (106), and the support body (1) is lowered along the inner wall of the wellbore (100); After the supporting body (1) passes through the stopper (101), the blocking member (3) extends out; After the support body (1) is lowered to the target position, concrete (5) is poured into the gap between the shaft (100) and the support body (1).

8. The method for constructing a shaft support beam according to claim 7, characterized in that: A bearing member (102) is provided on the inner wall of the shaft (100), and when the support body (1) is lowered to a target position, the support body (1) can abut against the bearing member (102).

9. The method for constructing a shaft support beam according to claim 8, characterized in that: The bearing member (102) is provided with a shear groove (103).

10. The method for constructing a shaft support beam according to claim 8, characterized in that: The supporting body (1) and the bearing member (102) are provided with casting holes (104) and drainage holes (105) extending through the supporting body (1) and the bearing member (102) along the thickness direction thereof.

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