CN212295807U - Double-cross oblique strut for natural ventilation cooling tower - Google Patents
Double-cross oblique strut for natural ventilation cooling tower Download PDFInfo
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- CN212295807U CN212295807U CN202021414202.8U CN202021414202U CN212295807U CN 212295807 U CN212295807 U CN 212295807U CN 202021414202 U CN202021414202 U CN 202021414202U CN 212295807 U CN212295807 U CN 212295807U
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Abstract
The utility model discloses a double-cross oblique strut for a natural ventilation cooling tower, wherein a plurality of oblique struts are arranged along the circumference to form a support body; the column top horizontal ring beam is arranged at the top of the oblique strut, and a cooling tower drum is supported above the column top horizontal ring beam; the bottom of the oblique strut is connected with the annular foundation through a buttress; the supporter includes the same quantity in the same direction as the slope pillar and the anti-slope pillar, follows clockwise and two anticlockwise directions from the tilt up respectively in the same direction as the slope pillar and the anti-slope pillar, every in the same direction as the slope pillar all with clockwise two adjacent anti-slope pillars in the air intake high-range twice alternately, every in the same direction as the slope pillar all with anticlockwise two adjacent in the same direction as the slope pillar in the air intake high-range twice alternately. The utility model has the advantages of the cooling tower air intake is high, heat-sinking capability is strong, and anti level twists reverse and anti lateral displacement ability reinforce, and the steel construction adopts batch production processing, on-the-spot spelling, construction simple process, construction cycle is short, civil engineering cost is low.
Description
Technical Field
The utility model belongs to the technical field of industry natural draft cooling tower, in particular to double-cross oblique support for natural draft cooling tower.
Background
Most of traditional large-scale industrial reinforced concrete natural draft cooling tower inclined struts adopt human struts (or called A-shaped struts), V-shaped struts, X-shaped struts or I-shaped struts; when the height of the air inlet of the cooling tower is high (close to or more than 40m), a double-cross inclined strut which crosses twice in the height direction of the inclined strut can be adopted.
The spatial bidirectional crossed oblique supporting columns form a plurality of groups of stable triangular stress structures along the circumferential direction and the meridian direction. The stress of the inclined strut is mainly the load of tension and the pressure of a shaft, and the radial bending moment and the tangential bending moment are smaller.
In order to meet the control requirements of strength and slenderness ratio, the section size and the steel bar consumption of the reinforced concrete inclined strut are large. When the diagonal pillar is poured, a scheme of a full frame scaffold is generally adopted at home and abroad to support the diagonal pillar formwork, and pouring construction is divided into multiple sections. Because the height of the diagonal brace is high, the weight is large, the using amount of scaffold steel pipes is large, the lease period is long, the civil engineering cost is high, and the construction period is long (the construction period of the double-cross diagonal brace is even half a year long).
Aiming at the weak points of the cooling tower structure system supported by the oblique struts, particularly the double-cross oblique struts, a novel cooling tower oblique strut structure system is needed to be provided, the construction process is simplified, the construction period is shortened, and the civil engineering cost is reduced.
SUMMERY OF THE UTILITY MODEL
For solving the weak point on the cooling tower structure system that current reinforced concrete diagonal brace supported, the utility model provides a natural draft is double-cross diagonal brace for cooling tower. The natural ventilation cooling tower adopting the structure has the advantages of high air inlet height, high horizontal torsion resistance and lateral displacement resistance, simple construction process, short construction period, low civil engineering cost and the like, and the steel structure is assembled and spliced on a factory processing site.
In order to achieve the above object, the utility model adopts the following technical solutions:
a double-cross oblique strut for a natural ventilation cooling tower comprises an annular foundation, an oblique strut and a horizontal ring beam at the top of the strut;
a plurality of the oblique supporting columns are arranged along the circumference to form a supporting body; arranging the column top horizontal ring beam on the top of the oblique strut; the bottom of the oblique strut is connected with the annular foundation through a buttress;
the supporter includes the same quantity in the same direction as the slope pillar and the anti-slope pillar, follows clockwise and two anticlockwise directions from the tilt up respectively in the same direction as the slope pillar and the anti-slope pillar, every in the same direction as the slope pillar all with clockwise two adjacent anti-slope pillars in the air intake high-range twice cross, every in the same direction as the slope pillar all with anticlockwise two adjacent in the same direction as the slope pillar in the air intake high-range twice cross.
As a further improvement of the present invention, the two intersections of the oblique struts form intersections, and the intersections are intersecting X-shaped nodes;
the intersecting X-shaped node is formed by fixedly connecting four oblique strut short sections at the intersection to form an X-shaped structure, and the inner parts of the four oblique strut short sections are mutually communicated.
As a further improvement of the utility model, the two intersections of the oblique strut form intersections, and the intersections are reinforced X-shaped nodes;
the reinforced X node is an X-shaped structure formed by fixedly connecting four oblique strut short sections at the intersection, a vertical reinforcing plate is arranged between the connection positions, and a plurality of layers of transverse reinforcing plates are arranged on the periphery of the intersection.
As a further improvement of the utility model, the supporting body is provided with 0, one or a plurality of middle horizontal ring beams along the height direction.
As a further improvement of the utility model, the projection of the column top horizontal ring beam, the circle at the twice intersection, the middle horizontal ring beam and the annular foundation on the ground are concentric circles.
As a further improvement of the utility model, the bottoms of the adjacent non-crossed forward-inclined strut and the reverse-inclined strut are arranged on the same buttress.
As a further improvement of the utility model, the oblique supporting column is of a steel pipe concrete structure.
As a further improvement of the utility model, the annular foundation is of a reinforced concrete structure.
As a further improvement of the utility model, the cross section of the oblique strut column limb is circular, rectangular, round corner rectangular or other cross sectional shapes.
Compared with the prior art, the utility model has the advantages of it is following:
the utility model relates to a natural draft is double-cross bracing piece for cooling tower, the main part includes the supporter, and the supporter has formed crossed network structure by the bracing piece of tangential and two radial direction slopes, and twice is alternately in air intake high range. The network structure forms a series of triangular systems, so that the stability is good; the double-cross inclined strut is of a steel pipe concrete structure; the lower ends of the oblique supporting columns are fixed on the annular foundation of the cooling tower through the column bottom buttress, the upper ends of the oblique supporting columns discretely support a tower barrel of the cooling tower, and adjacent oblique supporting columns are connected in a crossed mode through intersecting X-shaped nodes or reinforced X-shaped nodes. The utility model has the advantages of the cooling tower air intake is high, heat-sinking capability is strong, and anti level twists reverse and anti lateral displacement ability reinforce, and the steel construction adopts batch production processing, on-the-spot spelling, construction simple process, construction cycle is short, civil engineering cost is low.
Drawings
FIG. 1 is a three-dimensional view of a double-cross diagonal strut for a natural draft cooling tower (enhanced X-node with inter-strut horizontal ring beams);
FIG. 2 is a three-dimensional diagram of a double-cross concrete-filled steel tube diagonal strut (reinforced X-shaped node with horizontal ring beams between the struts);
FIG. 3 is a three-dimensional diagram of a double-cross concrete-filled steel tube diagonal strut (reinforced X-shaped node, no inter-column horizontal ring beam);
FIG. 4 is a three-dimensional diagram of a double-cross steel pipe concrete oblique strut (intersecting X-shaped node with horizontal ring beams between the struts);
FIG. 5 is a three-dimensional diagram of a double-cross concrete-filled steel tube diagonal strut (intersecting X-shaped node without horizontal ring beams between columns);
FIG. 6 is a diagonal strut intersecting X node;
FIG. 7 is a diagonal strut reinforced X node;
in the figure, 1, a double-cross concrete filled steel tube oblique strut, 1-1 a clockwise oblique strut and 1-2 a counterclockwise oblique strut; 2. a cooling tower drum; 3. pillar bottom buttress of the oblique strut; 4. an annular base; 5. an oblique strut cross node, 5-1, a tubular X node, 5-2 and a reinforced X node; 6. a column top horizontal ring beam; 7. a middle horizontal ring beam.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
Referring to fig. 1 to 4, the utility model relates to a natural draft cooling tower is with two cross bracing struts, two cross bracing struts upper portions are connected with a cooling tower section of thick bamboo, and the lower part is passed through the buttress and is connected with annular basis. The double-cross oblique strut is of a steel pipe concrete structure; the cooling tower barrel 1 is of a reinforced concrete thin shell structure; the annular foundation 3 is of a reinforced concrete structure. The horizontal ring beam 5 is a reinforced concrete, steel pipe concrete or section steel-concrete combined structure.
The oblique strut cross section is circular, rectangle, fillet rectangle or other cross sectional shapes, and the oblique strut is cross-section such as along post axis direction the utility model has the advantages of the whole atress of cooling tower is reasonable, anti level torsion ability is strong, and side direction overall stability is good, the pillar cross section is little, the reinforcing bar quantity is low.
Specifically, the concrete filled steel tube oblique supporting columns 1 are arranged along the circumference, the tops of the oblique supporting columns discretely support a cooling tower drum 2, the bottoms of the oblique supporting columns are connected with an annular foundation 4 through supporting piers 3, the adjacent oblique supporting columns are crossed for two times within the height range of an air inlet 5, and horizontal ring beams 6 are arranged at the tops of the oblique supporting columns.
As shown in fig. 2 and 3, the specific arrangement of the two-time intersection is: the supporting body comprises forward-inclined struts 1-1 and backward-inclined struts 1-2 which are the same in number, the forward-inclined struts 1-1 and the backward-inclined struts 1-2 are inclined from bottom to top along clockwise and anticlockwise directions respectively (the thumb is upward according to a left-hand spiral principle), each forward-inclined strut 1-1 is crossed with two adjacent backward-inclined struts 1-2 in the clockwise direction twice in the height range of the air inlet, and each backward-inclined strut 1-2 is crossed with two adjacent forward-inclined struts 1-1 in the anticlockwise direction twice in the height range of the air inlet.
Wherein, the cooling tower barrel 2 is a cast-in-place reinforced concrete thin shell structure; the double-cross steel pipe concrete inclined strut 1 is of a steel pipe concrete structure; the annular foundation 4 is of a reinforced concrete structure.
As a preferred embodiment, as shown in fig. 6, a cross point 5 is formed at two intersections of the diagonal struts, and the cross point 5 is a intersecting X node 5-1; the intersecting X-shaped node 5-1 is formed by fixedly connecting four oblique strut short sections at the intersection to form an X-shaped structure, and the interiors of the four oblique strut short sections are mutually communicated.
Optionally, the cross section of the column limb of the steel tube concrete oblique supporting column 1 is circular, rectangular, rounded rectangle or other cross section shapes, preferably circular. The two layers of cross points 5 of the steel pipe concrete diagonal strut adopt intersecting X nodes 5-1 or reinforced X nodes 5-2 consisting of longitudinal and transverse reinforcing plates, and reinforced X nodes are preferred.
As shown in fig. 7, a cross point 5 is formed at the two intersections of the oblique struts, and the cross point 5 is a reinforced X node 5-2; the reinforced X-shaped node 5-2 is formed by fixedly connecting four oblique strut short sections at the intersection to form an X-shaped structure, vertical reinforcing plates are arranged between the joints, and a plurality of layers of transverse reinforcing plates are arranged on the periphery of the intersection.
The outer steel tube of the double-cross steel tube concrete inclined strut 1 is constructed by adopting a scheme of factory processing, field assembly and integral or sectional hoisting; the concrete in the steel pipe is poured along the height of the column once or in sections by adopting a jacking method, a high-throwing method or a jacking and high-throwing method. The connection between the adjacent sections of the steel pipe adopts welding or flange-bolt connection.
Optionally, the outer steel pipe of the oblique strut is hoisted in place by adopting an oblique support at the inner side of the temporary tower or an oblique pull rod cable at the outer side of the temporary tower to realize positioning;
the horizontal ring beams 6 and 7 are of a steel structure, a reinforced concrete structure and a section steel-concrete combined structure. The horizontal ring beam is connected with the steel pipe concrete oblique support column to provide enhanced horizontal radial rigidity for the oblique support column.
The supporting body is provided with 0 or one or more middle horizontal ring beams 7 along the height direction. One or more horizontal ring beams 7 are arranged between the steel pipe concrete inclined strut columns along the height direction, the middle ring beam 7 can be omitted, and a horizontal ring beam is preferably arranged.
The projections of the column top horizontal ring beam 6, the circle where the two intersections are located, the middle horizontal ring beam 7 and the annular foundation 4 on the ground are concentric circles.
The bottoms of the adjacent non-crossed forward-inclined strut 1-1 and the reverse-inclined strut 1-2 are arranged on the same buttress 3.
The double-cross oblique strut of the utility model is applied to a natural ventilation cooling tower, and a plurality of oblique struts 1 are arranged along the circumference to form a supporting body; the column top horizontal ring beam 6 is arranged at the column top of the oblique strut 1, and the cooling tower drum 2 is supported above the column top horizontal ring beam 6; the bottom of the oblique strut 1 is connected with an annular foundation 4 through a buttress 3.
The present invention will be described in detail with reference to the following specific examples.
Example 1
As shown in fig. 1, it is a three-dimensional view of a double-cross concrete-filled steel tube diagonal strut natural draft cooling tower; FIG. 2 is a three-dimensional view of the double-cross concrete-filled steel tube diagonal bracing column in FIG. 1; the upper part of the double-cross inclined strut is connected with a cooling tower barrel, and the lower part of the double-cross inclined strut is connected with a cooling tower annular foundation through a buttress; horizontal ring beams are arranged between the columns and at the tops of the columns; the double-cross oblique strut is of a reinforced concrete or steel pipe concrete structure; the cooling tower barrel 1 is of a reinforced concrete thin shell structure; the annular foundation 3 is of a reinforced concrete structure; the horizontal ring beams 6 between the columns and at the tops of the columns are steel structures, steel pipe concrete or steel section-concrete combined structures.
The specific construction method comprises the following steps: firstly, constructing a cooling tower ring group; reserving a buttress vertical dowel bar in the ring base; constructing pillar bottom buttresses partially; the steel pipe concrete column steel pipe structure is processed in a factory and segmented, is anticorrosive and is transported to the site; assembling and forming, sectional hoisting, and auxiliary positioning of an internal inclined support or external anchoring structure; the bottom of the steel pipe is welded or bolted with the buttress embedded part, and adjacent steel pipe columns are welded or bolted with flanges; splicing the horizontal ring beam and the ring beam among the columns into a ring; hoisting the upper half steel pipe column, positioning the outer anchoring structure in an auxiliary mode, and splicing the horizontal ring beam and the ring beam at the top of the column into a ring; and constructing an upper tower barrel.
Example 2
As shown in fig. 3, the double-cross oblique strut adopts a reinforced X-shaped node and has no horizontal ring beam between the struts, and the other structures are the same as those of embodiment 1.
Example 3
As shown in fig. 4, the double-cross diagonal struts adopt intersecting X-shaped joints, and have horizontal ring beams between the struts, and the other structures are the same as those of embodiment 1.
Example 4
As shown in fig. 5, the double-cross diagonal struts adopt intersecting X-shaped joints, have no horizontal ring beam between the struts, and have the same structure as that of embodiment 1.
The above is a further detailed description of the present invention, and it should not be considered that the detailed embodiments of the present invention are limited thereto, and it will be apparent to those skilled in the art that the present invention can be implemented by a plurality of simple deductions or replacements without departing from the spirit of the present invention, and all should be considered as belonging to the present invention, which is determined by the appended claims.
Claims (9)
1. A double-cross oblique strut for a natural ventilation cooling tower is characterized by comprising an annular foundation (4), an oblique strut (1) and a horizontal ring beam (6) at the top of the strut;
a plurality of oblique supporting columns (1) are arranged along the circumference to form a supporting body; the column top horizontal ring beam (6) is arranged at the column top of the oblique column (1); the column bottom of the oblique strut (1) is connected with the annular foundation (4) through a buttress (3);
the supporting body comprises the same number of clockwise inclined struts (1-1) and anticlockwise inclined struts (1-2), the clockwise inclined struts (1-1) and the anticlockwise inclined struts (1-2) are inclined upwards from bottom to top respectively along clockwise and anticlockwise directions, each clockwise inclined strut (1-1) is crossed twice with two adjacent clockwise inclined struts (1-2) within the height range of the air inlet, and each anticlockwise inclined strut (1-2) is crossed twice with two adjacent anticlockwise inclined struts (1-1) within the height range of the air inlet.
2. The double-crossing diagonal strut for a natural draft cooling tower of claim 1, wherein the two crossings of said diagonal strut form a crossing point (5), said crossing point (5) being a intersecting X-node (5-1);
the intersecting X-shaped node (5-1) is formed by fixedly connecting four oblique strut short sections at the intersection to form an X-shaped structure, and the interior of the X-shaped structure is communicated with the interior of the X-shaped node.
3. The double-crossing diagonal strut for a natural draft cooling tower of claim 1, wherein the two crossings of said diagonal strut form a crossing point (5), said crossing point (5) being a reinforced type X node (5-2);
the reinforced X-shaped node (5-2) is formed by fixedly connecting four oblique strut short sections at the intersection to form an X-shaped structure, a vertical reinforcing plate is arranged between the joints, and a plurality of layers of transverse reinforcing plates are arranged on the periphery of the intersection.
4. A double cross diagonal bracing for natural draft cooling towers according to claim 2 or 3, wherein said support body is provided with 0, one or more intermediate horizontal ring beams (7) in the height direction.
5. The double-cross oblique strut for the natural draft cooling tower as claimed in claim 4, wherein the projections of the horizontal ring beam (6) on the top of the strut, the circle where the two intersections are located, the middle horizontal ring beam (7) and the annular foundation (4) on the ground are concentric circles.
6. The dual cross diagonal brace for a natural draft cooling tower of claim 1, wherein: the bottoms of the forward inclined strut (1-1) and the reverse inclined strut (1-2) which are adjacent and not crossed are arranged on the same buttress (3).
7. The double-cross diagonal strut for a natural draft cooling tower according to claim 1, wherein the diagonal strut (1) is a steel pipe concrete structure.
8. The double-cross diagonal strut for a natural draft cooling tower as claimed in claim 1, wherein said ring foundation (4) is a reinforced concrete structure.
9. A double-cross diagonal bracing for natural draft cooling towers according to claim 1, wherein the cross-section of the legs of said diagonal bracing (1) is circular or rectangular.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021414202.8U CN212295807U (en) | 2020-07-16 | 2020-07-16 | Double-cross oblique strut for natural ventilation cooling tower |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021414202.8U CN212295807U (en) | 2020-07-16 | 2020-07-16 | Double-cross oblique strut for natural ventilation cooling tower |
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| CN212295807U true CN212295807U (en) | 2021-01-05 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111677350A (en) * | 2020-07-16 | 2020-09-18 | 中国电力工程顾问集团西北电力设计院有限公司 | Natural ventilation cooling tower adopting double-cross oblique struts |
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- 2020-07-16 CN CN202021414202.8U patent/CN212295807U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111677350A (en) * | 2020-07-16 | 2020-09-18 | 中国电力工程顾问集团西北电力设计院有限公司 | Natural ventilation cooling tower adopting double-cross oblique struts |
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