CN114922225B - Underground construction platform - Google Patents
Underground construction platform Download PDFInfo
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- CN114922225B CN114922225B CN202210579205.4A CN202210579205A CN114922225B CN 114922225 B CN114922225 B CN 114922225B CN 202210579205 A CN202210579205 A CN 202210579205A CN 114922225 B CN114922225 B CN 114922225B
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- 238000010276 construction Methods 0.000 title claims abstract description 30
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 201
- 239000010959 steel Substances 0.000 claims abstract description 201
- 230000007246 mechanism Effects 0.000 claims abstract description 102
- 238000000034 method Methods 0.000 claims description 23
- 230000007423 decrease Effects 0.000 claims description 4
- 230000000087 stabilizing effect Effects 0.000 description 6
- 230000005484 gravity Effects 0.000 description 5
- 238000003780 insertion Methods 0.000 description 5
- 230000037431 insertion Effects 0.000 description 5
- 230000000670 limiting effect Effects 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 238000012966 insertion method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 238000005381 potential energy Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 230000002829 reductive effect Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/04—Making large underground spaces, e.g. for underground plants, e.g. stations of underground railways; Construction or layout thereof
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- Engineering & Computer Science (AREA)
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- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
- Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
Abstract
The invention relates to an underground construction platform, which comprises a first adjusting mechanism and a length element, wherein the end part of the first adjusting mechanism is provided with at least one length element for increasing the stressed area, and the length elements are radially distributed by taking the end part of the first adjusting mechanism as the center. The length element comprises at least one first section, one and/or both ends of which are provided with a second section for abutment against a steel pipe column surface. The middle part of the first section protrudes towards one side of the first adjusting mechanism, and the protruding part and the surface of the steel pipe column form a first space. The first adjusting mechanism and the length element are part of the self structure of the construction platform, the verticality adjustment of the steel pipe column can be realized without external circuit support, and the verticality adjustment is high in completion degree.
Description
Description of the division
The original foundation of the divisional application is patent application with application number of 202110181319.9, application date of 2021, 2 and 9, and the invention is named as a working platform for self-weight sinking type steel pipe column construction and a using method thereof.
Technical Field
The invention relates to the technical field of underground engineering construction, in particular to an underground construction platform.
Background
The cover-excavation method is gradually popularized in subway station engineering due to the characteristics that the cover-excavation method can effectively reduce the interference to the normal life of a city, the influence to ground traffic and the influence to adjacent buildings. In station engineering constructed by top-down construction, steel pipe columns are generally used for pouring concrete as permanent middle columns, and vertical loads transmitted by main stringers are finally born. The construction method of the steel pipe column mainly adopts an HPE hydraulic vertical insertion method. The HPE hydraulic vertical insertion method is to lower an empty steel pipe column to a designed elevation through an HPE hydraulic insertion instrument, then to pour concrete, and to control the verticality of the steel pipe column through the HPE hydraulic insertion instrument. However, the HPE hydraulic vertical insertion method uses high cost of machine equipment, consumes long time for insertion, has loud noise of a pressure device and has high requirements on construction sites. In the prior art, the gravity self-sinking type steel pipe column can be adopted to lower the field requirement, shorten the construction period and reduce the cost, but how to control the perpendicularity of the gravity self-sinking type steel pipe column is a main problem facing the current engineering.
For example, chinese patent publication No. CN100537905C discloses a reverse construction method one column one pile construction process and a correction device thereof. Specifically, the correction device includes a steel casing disposed on a concrete floor. The correction support is arranged at the bottom of the steel pile casing in a matched mode, and the outer correction support is correspondingly arranged above the steel pile casing through the roadbed plate. The outer correction bracket and the inner correction bracket are symmetrically positioned and fixed. The outer correction bracket and the inner correction bracket are respectively provided with an adjusting bolt. The technical scheme that this patent provided is that utilize two some first mathematics basic principle, on the basis of guaranteeing steel-pipe column straightness machining precision, through two sets of correcting unit about, correct the axis position and the straightness that hangs down of steel-pipe column and fix the steel-pipe column.
For example, chinese patent publication No. CN110863495a discloses a steel pipe column insertion accurate positioning structure including a tool section connecting the outer side of the steel pipe column; the device also comprises a protective cylinder and a positioning platform which are arranged in the preset hole; one end of the protective cylinder is exposed out of the ground; the positioning platform is positioned above the orifice of the preset hole and is connected with the ground through screw steel. The positioning platform comprises a base, a bracket, a cross brace for stabilizing the bracket and an adjustable cross rod. One end of the bracket is connected with the base. The support is provided with a rail cross bar with a chute. The adjustable cross rod is in sliding connection with the rail cross rod. The positioning platform is also provided with a positioning pin for limiting the steel pipe column. The locating pin sets up in adjustable horizontal pole. The support sets up two adjustable crossbars, and adjustable crossbars set up two locating pins. On the same horizontal plane, one end of the steel pipe column can be positioned through four positioning pins. In this patent document, the steel pipe column is positioned by a two-point positioning method: one point is on the ground surface and one point is in a preset hole. And the ground surface point utilizes a positioning platform to position the elevation and the ground position of the top end of the steel pipe column. The locating point in the preset hole is fixed with the concrete plane by a fixing piece. When the bottom is sealed, the positions of the steel pipe columns can be continuously ensured only by adjusting the rail cross rod and matching with the plumb standard.
However, when the technical scheme provided by the patent does not consider that the verticality is adjusted by using the two-point one-line principle, the steel pipe column possibly hoisted due to unbalanced stress can generate torsion and unstable state, and the torsion and unstable state can aggravate accumulation of verticality adjustment errors, so that the verticality requirement can be met only by repeated adjustment, and the defects of overlarge labor force configuration quantity, obvious system error superposition effect, excessive subjective uncertain factors of manual operation and the like exist, so that the installation of the steel pipe column with large dead weight is not facilitated. And to the mounting means of gravity self-sinking formula steel-pipe column that descends, the straightness adjusting device is perpendicular to the effort and the frictional force that contact each other produced of steel-pipe column at the in-process that the steel-pipe column is sunken also can produce the damage to steel-pipe column self structure to influence the steel-pipe column and sink the speed.
The Chinese patent literature with the publication number of CN109371970A discloses a pile sinking stabilizing platform for offshore wind power single piles, which comprises a first hull, a second hull, pile sinking guide frames, pile stabilizing frames, a winch and a hydraulic centralizing mechanism, wherein the first hull and the second hull are oppositely arranged, the pile sinking guide frames are arranged between the first hull and the second hull, the winch and the pile stabilizing frames are arranged on the first hull and the second hull, the hydraulic centralizing mechanism is arranged on the side face of the pile stabilizing frame, a pulley is arranged at the top of the pile stabilizing frame, and one end of a steel rope of the winch is connected with a hoisting lug plate on a pile body after passing through the pulley. The pile sinking guide frame can guide and position the steel pipe pile in the pile sinking process, is not influenced by wind waves, can adjust the perpendicularity of the adjusted steel pipe pile through the hydraulic righting mechanism, overcomes the defects of the existing offshore wind power pile sinking construction method, improves the stability of a single pile foundation, and ensures the safe operation of the wind turbine generator. However, the problem of convenient centering during construction of the steel pipe column cannot be solved, the hydraulic centering mechanism is used for adjusting the verticality of the steel pipe column, a distribution circuit is needed, and when the electric quantity of a ship is insufficient due to ocean stormy waves, the hydraulic centering mechanism is invalid and the verticality adjustment work is completed by manpower, so that the hydraulic centering mechanism is used for adjusting the verticality of the steel pipe column by virtue of the external hydraulic centering mechanism, and a certain failure risk exists.
Furthermore, there are differences in one aspect due to understanding to those skilled in the art; on the other hand, as the inventors studied numerous documents and patents while the present invention was made, the text is not limited to details and contents of all that are listed, but it is by no means the present invention does not have these prior art features, the present invention has all the prior art features, and the applicant remains in the background art to which the rights of the related prior art are added.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a working platform for self-weight sinking type steel pipe column construction, which comprises a first supporting body and a base. A first pair of middle parts and a second pair of middle parts which are spaced from each other are arranged between the base and the top of the first support body. The first and/or second pairs of intermediate portions are movable along the first support. Preferably, the first pair of middle portions and the second pair of middle portions are both disposed at the ground surface. In the prior art, in the process of adjusting the steel pipe column by adopting a two-point one-line mathematical principle, torque is generated through the height difference between the first pair of middle parts and the second pair of middle parts, and then the adjustment of the verticality of the steel pipe column is realized. The height difference determines the torque, and if the torque is too small, the first adjusting mechanism can apply larger acting force to push the steel pipe column, so that the steel pipe column is locally subjected to larger acting force. On the one hand, although the steel-pipe column belongs to the building member that rigidity is stronger, the local great effort that bears can not produce structural damage, but under the too little circumstances of first adjustment mechanism and steel-pipe column area of contact, this kind of great effort can aggravate steel-pipe column self atress imbalance, and then leads to steel-pipe column self torsion and unstability. On the other hand, applying a larger force also causes greater wear on the first adjustment mechanism. According to the invention, the first pair of middle parts and/or the second pair of middle parts slide along the first support body, the distance between the first pair of middle parts and the second pair of middle parts can be adjusted according to the steel pipe column and engineering parameters, and further the torque is controlled, so that the first adjusting mechanism can realize the adjustment of the verticality of the steel pipe column by applying smaller acting force.
The invention also provides a working platform for the dead weight sinking type steel pipe column construction, which comprises a first supporting body and a base. A first pair of middle parts is arranged between the base and the top of the first supporting body. The first centering portion is provided with at least one first adjustment mechanism. The end of the first adjusting mechanism is provided with at least one length element for increasing the stressed area. When the position of the steel pipe column is limited by using the first adjusting mechanism, the acting force of the first adjusting mechanism can aggravate unbalanced stress of the steel pipe column and further lead the steel pipe column to twist and be unstable under the condition that the contact area of the first adjusting mechanism and the steel pipe column is too small. The non-stationary state of the steel pipe column naturally increases the difficulty of perpendicularity adjustment, and particularly errors generated in the non-stationary state are accumulated and overlapped. The invention increases the stress area of the steel pipe column through the length element to improve the local stress state of the steel pipe column. In addition, the friction force between the plurality of length elements and the surface of the steel pipe column can also slow down the torsion degree of the steel pipe column caused by the stress.
According to a preferred embodiment, the plurality of first adjustment mechanisms provided in the first centering portion are provided at intervals from each other in the circumferential direction of the first support body. The plurality of length elements arranged at the end part of the first adjusting mechanism are distributed radially by taking the end part of the first adjusting mechanism as a center.
According to a preferred embodiment, the length element comprises at least one first section. One end and/or both ends of the first section are provided with a second section. The second section is for abutting against a steel pipe column surface.
According to a preferred embodiment, the middle portion of the first section protrudes towards the first adjusting means side. The convex portion and the steel pipe column surface form a first space.
According to a preferred embodiment, the protruding portion of the first section is provided with a hinge. The hinge divides the first section into a first segment and a second segment. The first section and the second section rotate towards one side of the steel pipe column respectively. Or the first section and the second section respectively rotate towards the side far away from the steel pipe column.
According to a preferred embodiment, the first adjusting mechanism is provided with at least one push rod connected to the second section, the first section and/or the second section.
According to a preferred embodiment, the first segment and/or the second segment has an arc. The hinge moves toward the steel pipe column side without contacting the steel pipe column in the case where the first section and the second section are rotated toward the side away from the steel pipe column, respectively.
According to a preferred embodiment, the second section has an angle with the first/second section. The included angle is greater than 0 DEG and less than 180 deg. The included angle gradually decreases along with the direction in which the length element extends along the circumferential direction of the steel pipe column.
The invention also provides a use method of the working platform for the dead weight sinking type steel pipe column construction. The using method comprises the steps of lowering and adjusting the verticality of the steel pipe column by using the working platform suitable for dead weight sinking type steel pipe column construction.
Drawings
FIG. 1 is a schematic view of a preferred embodiment of the work platform of the present invention;
FIG. 2 is a schematic view of a longitudinal partial structure of the structure shown in FIG. 1;
FIG. 3 is a schematic view of the structure of a preferred embodiment of the console of the present invention;
FIG. 4 is a schematic view of the structure of a preferred embodiment of the base of the present invention;
FIG. 5 is a schematic view of a preferred embodiment of a length element of the present invention;
FIG. 6 is a schematic view of a preferred construction of the length element of the present invention;
FIG. 7 is a schematic view of a preferred embodiment of the length element of the present invention covering a steel pipe column surface;
FIG. 8 is a schematic view of a preferred construction of the second section of the present invention;
FIG. 9 is a flow chart of the steps of a preferred embodiment of a method of using a work platform of the present invention.
List of reference numerals
1: first support body 2: operating table 3: support ring
4: first cross brace 5: a second pair of middle parts 6: base seat
7: second support 8: guardrail 9: first centering portion
10: plate 11: second cross brace 12: first groove body
13: first adjustment mechanism 14: second tank 15: sliding body
16: frame 17: fourth cross brace 18: leveling device
19: opening 20: third cross brace 21: steel pipe column
22: length element 23: first section 24: second section
25: first space 26: hinge 27: push rod
231: first segment 232: second section
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
Example 1
As shown in fig. 1, the invention provides a working platform for self-weight sinking type steel pipe column construction. The working platform comprises a first support body 1, an operating platform 2 and a base 6. Preferably, the first support 1 may be a polygonal body or a cylindrical body. The first supporting body 1 may adopt a steel frame structure. For example, the first support 1 may be a quadrilateral, built with a rectangular steel frame. For example, the first support 1 is constructed from four H-section steels. The base 6 is located at the bottom of the first support 1. The first support body 1 is provided with the operation panel 2 on the side opposite to the base 6. Preferably, the console 2 may be provided on top of the first support 1. The console 2 is movable toward the base 6 along the longitudinal direction of the first support 1. Preferably, the distance between the console 2 and the second centering portion 5 is adjusted based on the length of the steel pipe column 21 and engineering parameters. Through this setting method, the beneficial effect who reaches is: aiming at the principle of adjusting the verticality of the two-point type steel pipe column 21, torque is generated at two adjusting positions with a certain height difference in the axial direction of the steel pipe column 21, so that the verticality of the steel pipe column 21 is adjusted. Specifically, the two adjusting positions are the console 2 and the second pair of middle parts 5, respectively, and the torque can generate acting force on the steel pipe column 21, so that the steel pipe column 21 is forced to change the self-inclined state, and the steel pipe column 21 is vertical to the natural terrace. The height difference determines the torque, and if the torque is too small, the verticality adjusting device can apply larger acting force to push the steel pipe column 21, so that the steel pipe column 21 is locally subjected to larger acting force. The verticality adjusting means may be the first adjusting mechanism 13 of the present embodiment. On the one hand, although the steel pipe column 21 belongs to a building member with stronger rigidity, structural damage can not be generated when larger acting force is locally born, under the condition that the contact area between the verticality adjusting device and the steel pipe column 21 is too small, the imbalance of the stress of the steel pipe column 21 is aggravated by the larger acting force, and further the steel pipe column 21 is twisted and unstable. On the other hand, applying a larger force also causes larger wear on the perpendicularity adjusting device, and the required specification of the perpendicularity adjusting device is too high, thereby increasing the cost. According to the embodiment, the operating platform 2 slides along the first supporting body 1, the distance between the operating platform 2 and the second centering portion 5 can be adjusted according to the steel pipe column 21 and engineering parameters, and further the torque is controlled, so that the perpendicularity adjusting device can adjust the perpendicularity of the steel pipe column 21 by applying smaller acting force.
Preferably, as shown in fig. 1 and 2, the working platform further comprises a support ring 3 and a first cross brace 4. The support ring 3 and the first cross brace 4 are respectively arranged between the console 2 and the base 6. The support ring 3 and the first cross brace 4 serve to stabilize the first support body 1.
Preferably, the console 2 is provided with a first pair of intermediate sections 9, as shown in fig. 1 and 3. A second pair of intermediate portions 5 is provided between the first pair of intermediate portions 9 and the base 6, as shown in fig. 2. In use, the steel pipe column 21 passes through the first pair of intermediate sections 9 and the second pair of intermediate sections 5 in succession. As shown in fig. 1, the first pair of middle parts 9 and the second pair of middle parts 5 are respectively disposed at different positions along the length direction of the first support body 1. The first 9 and second 5 pairs of intermediate portions are parallel to each other. By this arrangement, the perpendicularity of the steel pipe column 21 can be controlled by restricting displacement according to the mathematical principle of two points and one line.
In another embodiment, the console 2 may not move along the longitudinal direction of the first support 1. The first pair of intermediate portions 9 moves in the longitudinal direction of the first support body 1. Or the first pair of middle parts 9 is fixed in position and the second pair of middle parts 5 moves along the first support 1. Or both the first pair of middle parts 9 and the second pair of middle parts 5 may be movable along the first support 1. Through this setting mode, the elevation condition of steel-pipe column 21 can be observed to the operation panel 2 not removal, and first pair of middle part 9 removal can realize adjusting the distance with second pair of middle part 5 according to steel-pipe column 21 and engineering parameter, and then the size of control moment of torsion for perpendicularity adjusting device can be through exerting less effort realization to the regulation of steel-pipe column 21 perpendicularity.
Preferably, the console 2 is provided with a plate 10. The plate body 10 is intended to carry an operator and a first pair of intermediate portions 9. Preferably, the plate body 10 may be made of a patterned steel plate.
Preferably, the console 2 further comprises a railing 8. The guard rail 8 surrounds the edges of the plate body 10. Preferably, the height of the guard rail 8 is not less than 0.8m.
Preferably, the plate body 10 is provided with openings 19. The opening 19 is used for passage of the steel pipe column 21. The cross section of the opening 19 is larger than the cross section of the steel pipe column 21. The shape of the opening 19 may be rectangular, circular, polygonal, etc. A first pair of intermediate portions 9 is provided at the opening 19. The first pair of intermediate portions 9 is detachably connected to the plate body 10 at an opening 19. The detachable mode can be a bolt connection, a hinge connection, a buckle connection and the like.
Preferably, the first pair of middle portions 9 comprises a second cross brace 11, a third cross brace 20 and a first adjustment mechanism 13. The second cross brace 11 is disposed on the plate body 10 at the opening 19. The second cross brace 11 is detachably connected with the plate body 10. The second cross brace 11 may be H-section steel. The second cross brace 11 is provided with a first groove 12. The third cross brace 20 is connected to the second cross brace 11 through the first groove 12. The third cross brace 20 may be moved through the first slot 12 in a length direction of the third cross brace 20. For example, the third cross brace 20 may be bolted to the first groove body 12 by bolts, so that the third cross brace 20 is fixed to the second cross brace 11. Preferably, in the case where the opening 19 is rectangular, the second and third cross braces 11 and 20 are respectively disposed around the opening 19 in a symmetrical manner, as shown in fig. 3. For example, the second cross braces 11 are disposed in a symmetrical manner on opposite sides of the opening 19, respectively. The third cross braces 20 are respectively provided on opposite sides of the opening 19 in a symmetrical manner. Preferably, both ends of the third wale 20 are connected with the first groove bodies 12 respectively provided on the ends of the second wale 11.
Preferably, the first adjusting mechanism 13 is used to adjust the position of the steel pipe column 21. The first adjusting mechanism 13 is provided on the second cross brace 11 and the third cross brace 20, respectively. Preferably, the second and third cross braces 11 and 20 are provided with a second channel 14 connected to the first adjustment mechanism 13. The first adjusting mechanism 13 is detachably connected with the second cross brace 11/the third cross brace 20. Preferably, the first adjustment mechanism 13 is movable in the length direction of the second/third wales 11/20. The first adjusting mechanism 13 is connected with the second cross brace 11/the third cross brace 20 through the second groove body 14 through bolts. Preferably, the first adjusting mechanism 13 can adjust the position through the second groove 14. Preferably, the first adjustment mechanism 13 may be a jack, an adjusting screw or the like. The number of the first adjusting mechanisms 13 may be four, and are provided on the second cross brace 11 and the third cross brace 20, respectively, as shown in fig. 3. In this arrangement, when adjusting the perpendicularity of the steel pipe column 21, the steel pipe column 21 is pushed or abutted/not abutted with the steel pipe column 21 by the plurality of first adjustment mechanisms 13 to limit the position, and further the adjustment of the perpendicularity is achieved by positioning the steel pipe column 21.
Preferably, the force-receiving surface of the first adjustment mechanism 13 is provided with at least one sliding body 15. The sliding body 15 can ensure that the contact surface moves in the plane direction. Through this setting mode, the friction between the first adjustment mechanism 13 and the steel pipe column 21 is rolling friction through the setting of the sliding body 15, and abrasion and the friction force to the steel pipe column 21 are obviously reduced, and then when the dead weight of the steel pipe column 21 sinks, the first adjustment mechanism 13 can enable the sinking of the steel pipe column 21 to be smoother while limiting.
Preferably, the second pair of intermediate portions 5 is arranged between the support ring 3 and the base 6. The second pair of middle portions 5 may limit the steel pipe column 21. Preferably, the second pair of middle parts 5 is of the same construction as the first pair of middle parts 9. For example, the second pair of intermediate portions 5 is provided with a second adjusting mechanism having the same structure as the first adjusting mechanism 13. Preferably, the first and second adjustment mechanisms 13 and 13 control the perpendicularity of the steel pipe column 21 in such a manner as to limit displacement. Preferably, the first adjusting mechanism 13/second adjusting mechanism is adjusted to adjust the verticality of the steel pipe column 21 in such a manner that the line connecting the first adjusting mechanism 13 of the first pair of middle portions 9 and the second adjusting mechanism of the second pair of middle portions 5 is parallel to the axis of the first support body 1. Preferably, the first adjusting mechanism 13/the second adjusting mechanism are adjusted to adjust the verticality of the steel pipe column 21 in such a manner that the line connecting the first adjusting mechanism 13 of the first pair of middle parts 9 and the second adjusting mechanism of the second pair of middle parts 5 is perpendicular to the natural terrace.
Preferably, as shown in fig. 1, the first support 1 is provided with a second support 7 along the first direction. One end of the second support 7 is connected to the first support 1. One end of the second supporting body 7 opposite to the first supporting body 1 is connected with the base 6. Preferably, the end of the second supporting body 7 opposite to the first supporting body 1 may not be connected to the base 6. For example, the end of the second supporting body 7 opposite to the first supporting body 1 may be connected to a natural floor. The first direction is neither parallel nor perpendicular to the length direction of the first support 1, as shown in fig. 1. Preferably, the second supporting bodies 7 may be provided at opposite sides of the first supporting body 1, respectively. The second supporting body 7 can support the first supporting body 1. For example, the second support 7 may be H-steel. The number of the second supports 7 on each side of the first support 1 may be 1, 2, 3 or more. Preferably, in the case where the base 6 is rectangular, the end portions of the second support 7 may be provided on each side of the base 6 and the extension thereof.
Preferably, as shown in fig. 4, the base 6 comprises a frame 16 and a fourth cross brace 17. Preferably, the base 6 may be rectangular. The frame 16 is formed of two parallel metal bodies. For example, the frame 16 may be formed from two H-beams. At least one fourth cross brace 17 is arranged between the frame bodies 16. The fourth cross braces 17 may be disposed in parallel or non-parallel with each other. Preferably, the end of the second support 7 may be provided on the frame 16 or the fourth cross brace 17.
Preferably, the base 6 is provided with leveling means 18. Leveling devices 18 may be provided at the connection of the fourth cross braces 17 with the frame 16. For example, 4 fourth cross braces 17 may be provided. As shown in fig. 4, the leveling device 18 is provided at the bottom of the junction of the fourth cross bar 17 and the frame 16. The levelling device 18 may be a jack. The number of leveling devices 18 may be 1, 2, 3 or more.
In order to facilitate understanding, the principle of adjusting the perpendicularity of the working platform provided by the embodiment is described.
Before the self-sinking construction of the steel pipe column 21, the working platform is firstly hung above the pile hole. The working platform is leveled by means of a leveling device 18 provided at the base 6.
The steel pipe column 21 is suspended to the center of the work platform. Specifically, the cross center may be marked at the end of the steel pipe column 21, and the steel pipe column 21 may be lowered after aligning the cross center of the steel pipe column 21 with the cross centers of the first pair of intermediate portions 9 and the second pair of intermediate portions 5. After the steel pipe column 21 sequentially passes through the first pair of middle parts 9 and the second pair of middle parts 5, the position of the steel pipe column 21 is adjusted through the first adjusting mechanism 13 of the first pair of middle parts 9 and the second adjusting mechanism of the second pair of middle parts 5, and the steel pipe column 21 is limited within the error allowable range. After the verticality adjustment of the steel pipe column 21 is completed, the steel pipe column 21 continues to be lowered, the elevation of the steel pipe column 21 is controlled by the elevation of the upper operating table 2, and the steel pipe column 21 is lowered to a specified position and then fixed.
The difference between this embodiment and the prior art is that the working platform does not provide a pressure device, and the sinking is completed by the dead weight of the steel pipe column 21 after the concrete is poured, and the working platform itself has leveling and positioning functions, and can control the insertion position of the steel pipe column 21 by the two-point principle through the first pair of middle parts 9 and the second pair of middle parts 5, and control the verticality of the steel pipe column 21 by limiting displacement. And the first adjusting mechanism 13 and the second adjusting mechanism are provided with the sliding body 15, so that the steel pipe column 21 can be more smoothly lowered. The elevation is measured upside down by the console 2 to control the steel pipe column 21 to reach the designed elevation.
Example 2
This embodiment is a further addition/modification of embodiment 1, and the repeated contents are not repeated.
In embodiment 1, the verticality of the steel pipe column 21 is adjusted by the first pair of middle parts 9 and the second pair of middle parts 5, and a two-point and one-line principle is adopted. The principle of the two-point one-line is that torque is generated by the height difference between the first pair of middle parts 9 and the second pair of middle parts 5, and then the verticality of the steel pipe column 21 is controlled by the first adjusting mechanism 13 and the second adjusting mechanism in a mode of limiting the position movement of the steel pipe column 21. During the adjustment of the steel pipe column 21, the steel pipe column 21 is subjected to two forces. An acting force is that the steel pipe column 21 is in an inclined state and is respectively abutted against the first pair of middle parts 9 and the second pair of middle parts 5 under the action of self gravity, and then the first adjusting mechanism 13 of the first pair of middle parts 9 and the second adjusting mechanism of the second pair of middle parts 5 generate supporting acting force on the steel pipe column 21. The other acting force is an acting force actively applied to the steel pipe column 21 by adjusting the inclination state of the steel pipe column 21 by the first adjusting mechanism 13 and the second adjusting mechanism. Since the steel pipe column 21 has a large gravity, a large force needs to be applied to change the inclination state of the steel pipe column 21. However, in the case where the contact area between the first adjustment mechanism 13/the second adjustment mechanism and the steel pipe column 21 is too small, such a large force may aggravate the unbalance of the stress of the steel pipe column 21 itself, and further cause the torsion and unbalance of the steel pipe column 21 itself. If the steel pipe column 21 is in a hoisting state at this time, the self-torsion of the steel pipe column inevitably causes torsion of the hoisting device, and the damage of the hoisting device may be caused. Moreover, the force of the hoisting device against torsion is also fed back to the steel pipe column 21, thereby causing the steel pipe column 21 to be in an unstable state. Because the first adjusting mechanism 13 and the second adjusting mechanism are in contact with the steel pipe column 21, acting force generated in a non-stable state can be fed back to the first adjusting mechanism 13 and the second adjusting mechanism, on one hand, the first adjusting mechanism 13 and the second adjusting mechanism are impacted, abrasion can be generated, and errors are caused; on the other hand, the state that the working platform is leveled is damaged due to impact, so that a plurality of errors are accumulated and overlapped, and the requirement of perpendicularity adjustment can be met through repeated leveling and adjustment for a plurality of times. The sliding body 15 is provided on the bearing surfaces of the first and second adjustment mechanisms 13 and 21, that is, on the portion in contact with the steel pipe column. The sliding body 15 is provided to smoothly lower the steel pipe column 21, but also to easily cause the steel pipe column 21 to rotate along its own axis.
Based on the above problems, the present embodiment improves and supplements the first adjustment mechanism 13 and the second adjustment mechanism in embodiment 1.
Preferably, the end of the first adjustment mechanism 13 is provided with at least one length element 22, as shown in fig. 5. The length element 22 is used to cover and contact the surface of the steel pipe column 21. The length element 22 can increase the contact area of the first adjusting mechanism 13 with the steel pipe column 21. The length element 22 may increase the bearing surface of the first adjustment mechanism 13.
As shown in fig. 5, the length elements 22 may be provided in a plurality, for example 1, 2, 3 or more. Preferably, the plurality of length elements 22 may be radially arranged centering on the end of the first adjustment mechanism 13. By this arrangement, the contact area between the first adjusting mechanism 13 and the steel pipe column 21 can be further increased, and the steel pipe column 21 can be subjected to balanced stress in the radial direction, so that the torsion of the steel pipe column 21 can be reduced.
Referring to fig. 6, the length element 22 comprises at least one first section 23. The number of first sections 23 may be 1, 2, 3 or more. A second section 24 is arranged between the two first sections 23. Or at least one end of the first section 23 is provided with a second section 24. The second section 24 is used for abutting against the surface of the steel pipe column 21, so as to increase the stress area of the steel pipe column 21. Preferably, the middle portion of the first section 23 is convex towards the first adjustment mechanism 13, as shown in fig. 6. In the case where the first adjustment mechanism 13 drives the length element 22 against the steel pipe column 21, at least the convex portion of the first section 23 does not abut against the surface of the steel pipe column 21, as shown in fig. 7. The convex portion of the first section 23 forms a first space 25 with the surface of the steel pipe column 21, as shown in fig. 6 and 7. The first space 25 accommodates a protrusion and an edge of the surface of the steel pipe column 21.
Preferably, the raised portion of the first section 23 is provided with a hinge 26. The first section 23 is divided into a first segment 231 and a second segment 232 by a hinge 26. The first segment 231 and the second segment 232 may be rotated relative to each other by the hinge 26, as shown in fig. 7. Preferably, the first section 231 and the second section 232 are rotatable toward the steel pipe column 21 side. The first section 231 and the second section 232 may be turned towards the side remote from the steel pipe column 21. The second section 24 can be abutted against the surface of the steel pipe column 21 by the relative rotation of the first section 231 and the second section 232, so that the length element 22 covers the surface of the steel pipe column 21, the stress area of the steel pipe column 21 is increased, and the unbalanced stress degree of the steel pipe column 21 is relieved.
Preferably, the hinge 26 is provided with a spring. By this arrangement, the first segment 231 and the second segment 232 can be kept to have a force to rotate toward the steel pipe column 21 side by the elastic potential energy of the spring, and further when the first adjusting mechanism 13 pushes the length element 22 to contact the surface of the steel pipe column 21, the second segment 24 can automatically abut against the surface of the steel pipe column 21 under the action of the elastic potential energy of the spring.
Preferably, the first segment 231 and the second segment 232 have a certain curvature. In this arrangement, when the first segment 231 and the second segment 232 are rotated toward the side away from the steel pipe column 21, the protruding portion of the first segment 23 and the surface of the steel pipe column 21 can also form the first space 25. Meanwhile, the first space 25 can also be used for protecting the hinge 26, so that the hinge 26 is prevented from contacting the surface of the steel pipe column 21, and therefore the hinge 26 cannot directly lean against the surface of the steel pipe column 21 under the pushing of the first adjusting mechanism 13, and further abrasion or deformation occurs.
Preferably, the first adjustment mechanism 13 is provided with at least one push rod 27. One end of the push rod 27 is connected to the first adjusting mechanism 13. The other end of the push rod 27 is connected to the second section 24. Preferably, one end of the push rod 27 may be connected with the first segment 231 and/or the second segment 232. Preferably, one end of the push rod 27 may be connected with the second section 24, the first section 231 and/or the second section 232, respectively. The number of push rods 27 may be 1, 2, 3 or more. Preferably, the push rod 27 is retractable under the control of the first adjustment mechanism 13. By this arrangement, the first adjusting mechanism 13 can apply a force to the second section 24 via the push rod 27, thereby pushing to change the perpendicularity of the steel pipe column 21 or change the position of the steel pipe column 21. Meanwhile, the arrangement mode can also increase the acting force point to the steel pipe column 21, and is further beneficial to the stress balance of the steel pipe column 21. It should be noted that, the first segment 231 and the second segment 232 have a certain arc setting, so that when the first segment 231 and the second segment 232 rotate, the hinge 26 can move toward the steel pipe column 21 side, so as to avoid blocking the push rod 27.
Referring to fig. 6 and 7, the second section 24 is angled with respect to the first section 23. The included angle is greater than 0 DEG and less than 180 deg. Preferably, the included angle is within the interval [90 °,160 ° ]. Since the first adjustment mechanism 13 applies a force to the second section 24 through the push rod 27, the first segment 231 and the second segment 232 are rotated toward the side away from the steel pipe column 21, as shown in fig. 7. In this way, the blocking of the protruding portion of the first section 23 with the push rod 27 can be avoided. And when the included angle is within the interval of [90 °,160 ° ], the first segment 231 and the second segment 232 are advantageously rotated toward the side away from the steel pipe column 21.
Preferably, the included angle gradually decreases with the length element 22 in the circumferential extension direction of the steel pipe column 21. Through this setting method, the beneficial effect who reaches is: even in the case where the steel pipe column 21 is a cylinder, the gradual decrease in the included angle can cause the second section 24 to fit the surface of the steel pipe column 21, thereby increasing the stress area of the steel pipe column 21.
Preferably, the length element 22 increases in width gradually in a direction away from the end of the first adjustment mechanism 13. The second section 24 gradually increases in width in a direction away from the end of the first adjustment mechanism 13. By this arrangement, the contact area with the steel pipe column 21 increases away from the center direction in which the force is applied, and the force against the torsion of the steel pipe column 21 itself increases.
Referring to fig. 8, the second section 24 is provided with at least one sliding body 15. The sliding body 15 may be a sphere. In order to avoid that the arrangement of the sliding body 15 makes the steel pipe column 21 easier to twist, the sliding body 15 may be a cylinder. By this arrangement, the steel pipe column 21 is prevented from being twisted more easily and the steel pipe column 21 is smoothly lowered.
Preferably, the end of the second adjustment mechanism is likewise provided with a length element 22. The structure of the length element 22 is the same as in the above preferred embodiment, and the repetition is not repeated.
Example 3
The invention provides a use method of a working platform. The working platform is used for construction of dead weight sinking type steel pipe columns. The use method can be realized by the working platform and/or other alternative parts. In the case where no conflict/contradiction occurs, the method of using the working platform of the present embodiment can be implemented by the working platform provided in embodiment 1.
The present embodiment provides a method for using a work platform suitable for self-weight sinking type steel pipe column construction, and the work platform in embodiment 1 and embodiment 2 is used to adjust the verticality of the steel pipe column 21. As shown in fig. 9, the use method includes the steps of:
s100: the working platform is leveled by a leveling device 18 provided on the base 6.
S200: the steel pipe column 21 is lowered after aligning the centers of the first and second pairs of middle parts 9 and 5 with the centers of the steel pipe column 21 so that the steel pipe column 21 passes through the first and second pairs of middle parts 9 and 5 in sequence. Preferably, the position of the steel pipe column 21 is adjusted by the first adjusting mechanism 13 of the first pair of middle parts 9 and the second adjusting mechanism of the second pair of middle parts 5, and the steel pipe column 21 is limited within the error allowance range. The error allowable range is less than 1/300. Preferably, the end of the first adjustment mechanism 13 is provided with at least one length element 22. The structure and implementation of the length element 22 are the same as the length element 22 provided in example 2, and the repetition is omitted.
S300: after the verticality adjustment of the steel pipe column 21 is completed, the steel pipe column 21 continues to be lowered, the elevation of the steel pipe column 21 is controlled by the elevation of the upper operating table 2, and the steel pipe column 21 is lowered to a specified position and then fixed.
The present specification contains several inventive concepts, and applicant reserves the right to issue a divisional application according to each of the inventive concepts. The description of the invention encompasses multiple inventive concepts, such as "preferably," "according to a preferred embodiment," or "optionally," all means that the corresponding paragraph discloses a separate concept, and that the applicant reserves the right to filed a divisional application according to each inventive concept.
It should be noted that the above-described embodiments are exemplary, and that a person skilled in the art, in light of the present disclosure, may devise various solutions that fall within the scope of the present disclosure and fall within the scope of the present disclosure. It should be understood by those skilled in the art that the present description and drawings are illustrative and not limiting to the claims. The scope of the invention is defined by the claims and their equivalents.
Claims (7)
1. An underground construction platform comprises a first adjusting mechanism (13) and a length element (22), and is characterized in that at least one length element (22) for increasing a stressed area is arranged at the end part of the first adjusting mechanism (13), and the length elements (22) are radially distributed with the end part of the first adjusting mechanism (13) as a center;
the length element (22) comprises at least one first section (23), one and/or both ends of the first section (23) being provided with a second section (24), the second section (24) being intended to abut against a surface of a steel pipe column (21);
the middle part of the first section (23) protrudes towards one side of the first adjusting mechanism (13), and the protruding part and the surface of the steel pipe column (21) form a first space (25);
the convex portion of the first section (23) is provided with a hinge (26), the hinge (26) dividing the first section (23) into a first segment (231) and a second segment (232), wherein,
the first section (231) and the second section (232) move toward the steel pipe column (21) side, respectively; or,
the first segment (231) and the second segment (232) are respectively rotated towards the side far away from the steel pipe column (21).
2. Underground construction platform according to claim 1, characterized in that the first adjustment mechanism (13) is provided with at least one push rod (27) connected to the second section (24), first section (231) and/or second section (232).
3. A method of using the underground construction platform according to claim 1 or 2, characterized in that the method uses the underground construction platform to make a perpendicularity adjustment of the steel pipe column (21), the method comprising:
the position of the steel pipe column (21) is limited by using a first adjusting mechanism (13), at least one length element (22) for increasing the stressed area is arranged at the end part of the first adjusting mechanism (13), and the length elements (22) are radially distributed by taking the end part of the first adjusting mechanism (13) as the center.
4. A method of use according to claim 3, characterized in that the length element (22) comprises at least a first section (23) and a second section (24), the first section (23) not bearing at least its raised portion against the surface of the steel pipe column (21) in case the first adjustment mechanism (13) drives the length element (22) against the steel pipe column (22).
5. The use according to claim 4, characterized in that the first section (23) is divided into a first segment (231) and a second segment (232) by means of a hinge (26), the first segment (231) and the second segment (232) being rotatable relative to each other by means of the hinge (26), the relative rotation of the first segment (231) and the second segment (232) being such that the second segment (24) is brought to bear against the surface of the steel-pipe column (21), whereby the length element (22) covers the surface of the steel-pipe column (21).
6. The use according to claim 5, characterized in that the first segment (231) and/or the second segment (232) have an arc, wherein,
the hinge (26) moves toward the steel pipe column (21) side without contacting the steel pipe column (21) while the first section (231) and the second section (232) are rotated toward the side away from the steel pipe column (21), respectively.
7. The method of use according to claim 6, wherein the second section (24) is at an angle to the first section (231)/second section (232), wherein,
the included angle gradually decreases along the circumferential extending direction of the steel pipe column (21) along with the length element (22).
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| CN202210579205.4A CN114922225B (en) | 2021-02-09 | 2021-02-09 | Underground construction platform |
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| CN202210579205.4A CN114922225B (en) | 2021-02-09 | 2021-02-09 | Underground construction platform |
| CN202110181319.9A CN112962668B (en) | 2021-02-09 | 2021-02-09 | Working platform for self-weight sinking type steel pipe column construction and using method thereof |
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| CN202210573329.1A Active CN114908803B (en) | 2021-02-09 | 2021-02-09 | Steel pipe column construction system |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN114908803B (en) | 2024-02-27 |
| CN114908803A (en) | 2022-08-16 |
| CN112962668B (en) | 2022-06-21 |
| CN112962668A (en) | 2021-06-15 |
| CN114922225A (en) | 2022-08-19 |
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