CN112324198A - Structure of wall-separated type constructional column - Google Patents

Structure of wall-separated type constructional column Download PDF

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Publication number
CN112324198A
CN112324198A CN202011163576.1A CN202011163576A CN112324198A CN 112324198 A CN112324198 A CN 112324198A CN 202011163576 A CN202011163576 A CN 202011163576A CN 112324198 A CN112324198 A CN 112324198A
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China
Prior art keywords
constructional column
wall
rock wall
supporting bracket
rock
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CN202011163576.1A
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CN112324198B (en
Inventor
刘瑞雪
侯东奇
张恩宝
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PowerChina Chengdu Engineering Co Ltd
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PowerChina Chengdu Engineering Co Ltd
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    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04HBUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H5/00Buildings or groups of buildings for industrial or agricultural purposes
    • E04H5/02Buildings or groups of buildings for industrial purposes, e.g. for power-plants or factories
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/18Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
    • E04B1/20Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of concrete, e.g. reinforced concrete, or other stonelike material
    • E04B1/21Connections specially adapted therefor

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Finishing Walls (AREA)

Abstract

The invention discloses an off-wall type constructional column structure, belongs to the field of underground engineering, and provides an off-wall type constructional column structure capable of improving the efficiency of rock wall surface drainage, outer wall internal ventilation and operation period maintenance, which comprises a constructional column adjacent to a rock wall of an underground workshop, wherein the constructional column is at a certain distance L from the rock wall of the underground workshop, and the certain distance L is more than 20cm and less than 60 cm; at least one supporting bracket is arranged along the upper height direction of the constructional column at intervals, the thickness b of each supporting bracket is equal to the distance L between the constructional column and the rock wall, an anchor bar penetrating through the thickness b direction of each supporting bracket is arranged in each supporting bracket, one end of each supporting bracket is connected with the constructional column through the anchor bar, and the other end of each supporting bracket is connected with the rock wall through the anchor bar. The invention can form a corresponding gap between the constructional column and the rock wall, thereby effectively improving the efficiency of rock wall surface drainage, outer wall internal ventilation and operation period maintenance and solving the technical problem of adopting a wall-attached constructional column structure in the traditional mode.

Description

Structure of wall-separated type constructional column
Technical Field
The invention relates to the field of underground engineering, in particular to an off-wall constructional column structure.
Background
In the underground powerhouse of the hydropower station, the constructional column close to the rock wall side is often higher in height, in order to enhance the stability of the constructional column and the bent frame, the constructional column is of a wall-attached constructional column structure, one side of the constructional column is directly attached to the surface of the rock wall in a clinging mode through the wall-attached constructional column structure, and the anchor bars are connected with the rock wall in an anchoring mode. However, in actual engineering operation, the attached constructional columns isolate the space between the outer wall and the rock wall, so that the efficiency of rock wall surface drainage, outer wall internal ventilation and operation period maintenance is reduced. Especially, if the thickness of the column from the lower part of the power station rock wall beam to the generator layer is larger, the wall-attached column can also cause the waste of certain materials such as concrete, reinforcing steel bars and the like.
Disclosure of Invention
The invention aims to provide an off-wall constructional column structure capable of improving the efficiency of rock wall surface drainage, outer wall internal ventilation and operation maintenance.
The technical scheme adopted by the invention for solving the technical problems is as follows: the off-wall type constructional column structure comprises a constructional column adjacent to a rock wall of an underground workshop, wherein the constructional column is at a certain distance L from the rock wall of the underground workshop and meets the condition that L is more than 20cm and less than 60 cm; at least one supporting bracket is arranged along the upper height direction of the constructional column at intervals, the thickness b of each supporting bracket is equal to the distance L between the constructional column and the rock wall, an anchor bar penetrating through the thickness b direction of each supporting bracket is arranged in each supporting bracket, one end of each supporting bracket is connected with the constructional column through the anchor bar, and the other end of each supporting bracket is connected with the rock wall through the anchor bar.
Further, the method comprises the following steps: the cross-sectional shape of the support bracket in the thickness direction thereof is rectangular or trapezoidal.
Further, the method comprises the following steps: the construction column is a rectangular column with a rectangular cross section, the long side of the rectangle corresponding to the cross section of the construction column corresponds to the width D of the construction column, and the short side of the rectangle corresponding to the cross section corresponds to the thickness B of the construction column.
Further, the method comprises the following steps: the width D of the support bracket is equal to the width D of the construction column, and the height h of the support bracket is 60-150 cm.
Further, the method comprises the following steps: the width D was 80cm, the thickness B was 60cm, and the spacing L was 40 cm.
Further, the method comprises the following steps: the number of the support brackets is at least two, and the distance between every two adjacent support brackets is 4-6 m.
Further, the method comprises the following steps: the end part of the anchor bar in the implanted constructional column is provided with a bending section which is vertically bent.
Further, the method comprises the following steps: the rock wall comprises an inner rock body part and a concrete spraying layer on the surface, the support bracket penetrates through the concrete spraying layer and then contacts with the surface of the inner rock body part, and the corresponding ends of the anchor bars are implanted into the inner rock body part.
Further, the method comprises the following steps: the length of each anchor rib is 20-28 mm, the row spacing is 0.3-0.5 m, and the anchoring depth of the anchor rib implanted into the rock wall is not less than 40 phi; the anchoring depth of the anchor bars implanted into the constructional column is not less than 40 phi, wherein phi is the diameter of the anchor bars.
Further, the method comprises the following steps: the anchoring depth of the anchor bars implanted into the rock wall is required to be not less than 2 m.
The invention has the beneficial effects that: according to the invention, the constructional column is arranged to be at a certain distance L from the rock wall, so that a corresponding clearance channel can be formed between the constructional column and the rock wall, the efficiency of rock wall surface drainage, outer wall internal ventilation and operation period maintenance can be effectively improved, and the technical problem existing in the traditional mode that a wall-attached constructional column structure is adopted is effectively solved. In addition, the structure of supporting the bracket and the anchor bars is arranged, so that the constructional column is effectively connected and supported with the rock wall, the structural strength and stability of the constructional column arranged away from the wall are guaranteed, and the bearing capacity of the constructional column is guaranteed.
Drawings
FIG. 1 is a front view of an off-wall construction post structure according to the present invention;
FIG. 2 is a top view of an off-wall construction column structure according to the present invention;
labeled as: rock wall 1, constructional column 2, support bracket 3, anchor bar 4, bend section 41, inside rock portion 11, spout concrete layer 12.
Detailed Description
The invention is further described with reference to the following figures and detailed description.
It should be noted that, if directional indications are used in the present invention, such as terms of directions and orientations of up, down, left, right, front and back, the terms are used to facilitate description of relative positional relationship between members, and an absolute position that is not a positional relationship between related members and members is specifically used only to explain a relative positional relationship between members and a motion situation, etc. in a specific posture, if the specific posture is changed, the directional indication is changed accordingly.
The off-wall constructional column structure comprises a constructional column 2 adjacent to a rock wall 1 of an underground workshop, wherein the constructional column 2 has a certain distance L from the rock wall 1 of the underground workshop, and the distance L is more than 20cm and less than 60 cm; at least one supporting bracket 3 is arranged along the upper and lower height direction of the constructional column 2 at intervals, the thickness b of the supporting bracket 3 is equal to the distance L between the constructional column 2 and the rock wall 1, an anchor bar 4 penetrating through the thickness b direction of the supporting bracket 3 is arranged in the supporting bracket 3, one end of the supporting bracket 3 is connected with the constructional column 2 through the anchor bar 4, and the other end of the supporting bracket 3 is connected with the rock wall 1 through the anchor bar 4.
Because an independent constructional column structure which is far away from the rock wall 1 and is arranged in the middle of the plant exists in the underground plant, the independent constructional column structure does not have a connection relation with the rock wall 1 and does not need to be connected with the rock wall, and meanwhile, the problems of reducing the drainage of the rock wall surface, the ventilation in the outer wall, the maintenance efficiency in the operation period and the like in the background technology of the invention do not exist. Therefore, it is clear that the off-wall constructional column structure in the invention is used for changing the structural form that the constructional column is directly and closely matched with the rock wall in the traditional on-wall constructional column structure, so as to solve the technical problem that the constructional column 2 which is arranged adjacent to the rock wall 1 of the underground workshop is arranged in the on-wall constructional column structure.
In the invention, a certain distance L is set between a constructional column 2 and a rock wall 1, and the value range is 20-60 cm; therefore, a certain space gap can be reserved between the constructional column 2 and the rock wall 1, the width of the gap is between 20 and 60cm, and the efficiency of rock wall surface drainage, outer wall internal ventilation and operation period maintenance can be effectively improved through the gap; therefore, the technical problem of the prior common wall-mounted constructional column structure is solved.
In the invention, because the constructional column 2 is arranged away from the wall, in order to ensure the structural strength and stability of the constructional column 2, the corresponding structure of the support bracket 3 is arranged, and the support bracket 3 is effectively connected with the rock wall 1 and the constructional column 2 through the corresponding anchor bars 4, so that the support and reinforcement effect on the constructional column 2 is realized. Specifically, at least two support brackets 3 may be arranged at intervals along the vertical height direction of the construction column 2 according to the height of the construction column 2, and the interval between the support brackets 3 may be set to 4-6m preferentially, for example, the interval between two adjacent support brackets 3 is set to 5 m.
In addition, as for the specific structural shape of the support corbel 3, it may be preferable in the present invention to provide that its cross-sectional shape in the thickness direction is rectangular or trapezoidal; wherein the upper one of the support brackets 3 in fig. 1 is a case where the sectional shape in the thickness direction is rectangular, and the lower one of the support brackets 3 in fig. 1 is a case where the sectional shape in the thickness direction is trapezoidal, and the base of the trapezoidal shape is correspondingly connected to the constructional column 2. In addition, the height h of the supporting bracket 3 can be generally set to be 60-150 cm; when the cross-sectional shape of the support bracket 3 in the thickness direction is rectangular, the height h thereof corresponds to a constant value, such as 100 cm; when the cross-sectional shape of the support bracket 3 in the thickness direction is a trapezoid, the height h thereof corresponds to a variable value, and in this case, it may be specifically set to vary linearly from 100cm to 150 cm.
In addition, the structure of the construction pillars 2 is generally configured as rectangular parallelepiped pillars having a rectangular cross section, wherein the cross section refers to a section perpendicular to the height direction of the construction pillars 2; reference is made in particular to the sectional shape shown in fig. 2, the longer side of the rectangle corresponding to the cross section corresponding to the width D of the constructional column 2 and the shorter side of the rectangle corresponding to the cross section corresponding to the thickness B of the constructional column 2. In the above structure, the width D of the support corbel 3 may further preferably be set equal to the width D of the construction column 2, which will be shown in fig. 2. For example, a specific configuration column 2 may be provided having a width D of 80cm and a thickness B of 60 cm; the spacing L may then be set to 40 cm.
In addition, in order to improve the strength of the fixed connection structure between the anchor bar 4 and the constructional column 2 after being implanted into the constructional column 2, the invention can further provide that the end part of the anchor bar 4 implanted into the constructional column 2 is provided with a vertically bent bending section 41; this increases the pull-out resistance of the anchor 4 by the bent section 41, as shown in fig. 1, and thus increases the structural strength of the connection.
In addition, in actual engineering, the excavated rock is usually used as a rock wall 1 of a factory building after a concrete layer is sprayed on the surface of an exposed rock; thus, the rock wall 1 described in the present invention may comprise an inner rock section 11 and a superficial shotcrete layer 12; under the structure, in order to ensure the connection strength of the support bracket 3 and the rock wall, the support bracket 3 is arranged to penetrate through the shotcrete layer 12 and then contact with the surface of the inner rock body part 11, and meanwhile, the corresponding end of the anchor bar 4 is arranged to be implanted into the inner rock body part 11. That is, after the corresponding shotcrete layer 12 is sprayed, when the corbels 3 need to be supported, the corresponding shotcrete layer 12 needs to be excavated on the surface of the rock wall 1 and then the construction is performed.
In addition, the function of the anchor bars 4 is mainly to effectively fix the support corbels 3 to the corresponding rock wall 1 and to the construction column 2, so as to improve the structural strength of the connection. Specifically, in order to ensure the firmness of the anchor bars 4 after connection, the following parameters are preferably set: the length of each anchor rib 4 is 20-28 mm, the row spacing is 0.3-0.5 m, and the anchoring depth of the anchor ribs 4 implanted into the rock wall 1 is not less than 40 phi; the anchoring depth of the anchor bars 4 implanted in the constructional column 2 is not less than 40 phi, wherein phi is the diameter of the anchor bars 4.
More specifically, in order to ensure the firmness of the anchor bars 4 implanted into the rock wall 1, the anchoring depth of the anchor bars 4 implanted into the rock wall 1 is further set to be not less than 2m, so as to ensure the structural strength of the implanted anchor bars.
Without loss of generality, the anchor bars 4 may be conventional mortar anchors, while the support brackets 3 and the construction columns 2 are conventional reinforced concrete structures.

Claims (10)

1. Off-wall constructional column structure, including constructional column (2) adjacent with rock wall (1) of underground factory building, its characterized in that: the constructional column (2) is at a certain distance L from the rock wall (1) of the underground workshop, and the distance L is more than 20cm and less than 60 cm; at least one supporting bracket (3) is arranged along the upper and lower height direction of the constructional column (2) at intervals, the thickness b of the supporting bracket (3) is equal to the distance L between the constructional column (2) and the rock wall (1), an anchor bar (4) penetrating through the thickness b direction of the supporting bracket (3) is arranged in the supporting bracket (3), one end of the supporting bracket (3) is connected with the constructional column (2) through the anchor bar (4), and the other end of the supporting bracket (3) is connected with the rock wall (1) through the anchor bar (4).
2. An offwall construction column structure as defined in claim 1, wherein: the cross-sectional shape of the support bracket (3) along the thickness direction is rectangular or trapezoidal.
3. An offwall construction column structure as defined in claim 1, wherein: the constructional column (2) is a rectangular column with a rectangular cross section, the long side of the rectangle corresponding to the cross section of the constructional column corresponds to the width D of the constructional column (2), and the short side of the rectangle corresponding to the cross section corresponds to the thickness B of the constructional column (2).
4. An offwall construction column structure as defined in claim 3, wherein: the width D of the support bracket (3) is equal to the width D of the constructional column (2), and the height h of the support bracket (3) is 60-150 cm.
5. An offwall construction column structure as defined in claim 3, wherein: the width D was 80cm, the thickness B was 60cm, and the spacing L was 40 cm.
6. An offwall construction column structure as defined in claim 1, wherein: the number of the support brackets (3) is at least two, and the distance between every two adjacent support brackets (3) is 4-6 m.
7. An offwall construction column structure as defined in claim 1, wherein: the end of the anchor bar (4) in the implantation constructional column (2) is provided with a vertically bent bending section (41).
8. An offwall construction column structure as defined in claim 1, wherein: the rock wall (1) comprises an internal rock part (11) and a concrete spraying layer (12) on the surface, the support bracket (3) penetrates through the concrete spraying layer (12) and then is in contact with the surface of the internal rock part (11), and the corresponding end of the anchor bar (4) is implanted into the internal rock part (11).
9. An offwall construction column structure as claimed in any one of claims 1 to 8, wherein: the length of each anchor bar (4) is 20-28 mm, the row spacing is 0.3-0.5 m, and the anchoring depth of the anchor bars (4) implanted into the rock wall (1) is not less than 40 phi; the anchoring depth of the anchor bar (4) implanted into the constructional column (2) is not less than 40 phi, wherein phi is the diameter of the anchor bar (4).
10. An offwall construction column structure as defined in claim 9, wherein: the anchoring depth of the anchor bars (4) embedded into the rock wall (1) is required to be not less than 2 m.
CN202011163576.1A 2020-10-27 2020-10-27 Structure of wall-separated type constructional column Active CN112324198B (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202124933U (en) * 2011-06-09 2012-01-25 中国建筑第六工程局有限公司 Connecting structure for steel bar truss floor deck and concrete wall column
RU117956U1 (en) * 2011-12-30 2012-07-10 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Самарский государственный архитектурно-строительный университет" (СГАСУ) DEVICE FOR STRENGTHENING THE COLUMN AND MOUNTED PANELS OF THE WALL
CN105350503A (en) * 2015-10-10 2016-02-24 中国电建集团贵阳勘测设计研究院有限公司 Hydropower station underground powerhouse unit transformer access tunnel structure and construction method thereof
CN207130793U (en) * 2017-08-31 2018-03-23 中国电建集团成都勘测设计研究院有限公司 For the water guide structure below underground power house ceiling structure edge

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202124933U (en) * 2011-06-09 2012-01-25 中国建筑第六工程局有限公司 Connecting structure for steel bar truss floor deck and concrete wall column
RU117956U1 (en) * 2011-12-30 2012-07-10 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Самарский государственный архитектурно-строительный университет" (СГАСУ) DEVICE FOR STRENGTHENING THE COLUMN AND MOUNTED PANELS OF THE WALL
CN105350503A (en) * 2015-10-10 2016-02-24 中国电建集团贵阳勘测设计研究院有限公司 Hydropower station underground powerhouse unit transformer access tunnel structure and construction method thereof
CN207130793U (en) * 2017-08-31 2018-03-23 中国电建集团成都勘测设计研究院有限公司 For the water guide structure below underground power house ceiling structure edge

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