Structure suitable for supporting steel pipe stand column on inclined tower body and construction method of structure

Abstract

The invention provides a structure suitable for supporting a steel pipe stand column on an inclined tower body and a construction method of the structure. Two sets of climbing cone embedded parts are embedded and fixed to the two opposite inner sides of two tower bodies respectively, and the two sets of climbing cone embedded parts are welded and fixed to the two ends of a set of opposite supports attached to the shape of the tower body and the distance between the two sets of opposite supports in the transverse bridge direction respectively; the steel pipe stand column supports are fixed to the horizontal installation faces provided by the opposite supports. The method is suitable for various inclined or arc-shaped tower bodies, the used materials are very common, new materials do not need to be purchased again, most components can be recycled, and insufficient utilization and waste of existing steel structure resources are avoided; in addition, the structure is simple, construction is convenient and fast, the construction difficulty is greatly reduced and the construction progress is accelerated while the construction investment is reduced and the engineering cost is saved, and the structure safety is guaranteed.

Description

Technical Field

[0001] The invention belongs to the technical field of bridge construction, and in particular relates to a structure suitable for supporting steel pipe columns on an inclined tower body and a construction method thereof. Background Art

[0002] With the rapid development of infrastructure construction in my country, highway and railway bridges are gradually shifting towards large spans. Among many types of bridges, cable-stayed bridges are widely used due to their large spans and beautiful shapes. The lower crossbeam, as one of its important components, not only increases the overall aesthetics of the bridge, but also connects the two towers to improve overall stability.

[0003] The lower beam concrete construction usually adopts the ground-mounted steel pipe support method and the truss method. The truss method generally requires a large hole slot to be reserved on the tower body to embed the corbel. Because the corbel is large in size, it will generally conflict with the main reinforcement of the tower body, and the main reinforcement needs to be cut off, which weakens the performance of the tower body to a certain extent; the ground-mounted steel pipe support method is more popular than the truss method, and has better force performance and stability, and is safer. The ground-mounted steel pipe support can generally support the steel pipe column on the pedestal or tower base, but if the two tower limbs of the lower tower column are tilted outward or the roots of the two tower limbs are connected together through concrete decoration, the steel pipe column of the lower beam support cannot be directly supported on the tower body. Generally, concrete pads can be poured on the inner side of the two limbs of the tower body, or vertical grooves can be reserved in the tower body concrete to support the steel pipe column, and the steel pipe column can be removed after the lower beam construction is completed, and then grouting and smoothing the surface of the tower body can be used. However, if the inclination rate of the tower body or the curvature radius of the arc-shaped tower body is large, the pouring height of the concrete pedestal or the height of the reserved vertical groove in the tower body concrete will be very large, resulting in a large amount of concrete pouring. It will also be very difficult to chisel out the concrete pedestal in the later stage, which will inevitably increase the difficulty of construction and waste a lot of concrete, resulting in insufficient utilization and waste of existing steel structure resources and increased construction investment. Summary of the invention

[0004] In view of the problems existing in the prior art, the present invention provides the following technical solutions:

[0005] A structure suitable for supporting steel pipe columns on an inclined tower body, wherein the steel pipe columns are welded and fixed on the opposite supports, and the two ends of the opposite supports are respectively welded and fixed to a set of steel plates of climbing cone embedded parts, and the steel plates of each set of climbing cone embedded parts are detachably connected and fixed to a plurality of climbing cones embedded in the inner wall of one of the opposite sides of the two tower bodies through climbing cone nuts.

[0006] Furthermore, the brace is welded by section steel and a plurality of transverse stiffening plates, and the steel pipe column is welded and fixed on the upper surface of the section steel.

[0007] Furthermore, a plurality of transverse stiffening plates are welded to the steel sections at corresponding positions of the steel pipe columns and at certain intervals.

[0008] The present invention also provides a construction method suitable for supporting steel pipe columns on an inclined tower body, which is characterized in that a set of climbing cone embedded parts are respectively embedded and fixed on the opposite inner sides of the two limbs of the tower body, and the two sets of climbing cone embedded parts are respectively welded and fixed to the two ends of a group of braces that fit the shape of the tower body and the transverse distance of the bridge, and the steel pipe column supports are fixed on the horizontal installation surface provided by the braces.

[0009] Specifically, the steps include:

[0010] S1. Pre-embed a number of climbing cones on the two inner sides of the two tower bodies where the supporting positions need to be set, and connect a steel plate of a certain thickness with the climbing cone on this side through a climbing cone nut to form a climbing cone embedded part;

[0011] S2. Cut the steel in strict accordance with the tower shape and transverse spacing of the position of the brace, and weld several transverse stiffening plates at the corresponding steel pipe column installation position and a certain interval to form a brace. Then, weld the two ends of the brace to the steel plates of the climbing cone embedded parts embedded in the inner side of the two limbs of the tower body respectively;

[0012] S3. Support the steel pipe column of the lower crossbeam bracket on the brace and weld it firmly;

[0013] S4. After the lower beam is cast, remove the steel pipe columns of the lower beam support;

[0014] S5. Loosen the climbing cone nut, remove the steel plates of the supporting and embedded climbing cone parts at both ends at the same time, and smooth the climbing cone hole with mortar to restore it to the original design appearance.

[0015] Compared with the traditional method of pouring concrete pads on the inner sides of the two tower bodies or first reserving vertical grooves in the tower body concrete to support the steel pipe columns, and then grouting and smoothing the tower body surface after the lower crossbeam construction is completed and the steel pipe columns are removed, the present invention can effectively solve the problem that the pouring height of the concrete pad or the height of the reserved vertical grooves in the tower body concrete is very large due to the large inclination rate of the tower body or the curvature radius of the arc-shaped tower body, and it is very difficult to chisel out the concrete pad in the later stage. This structure and construction method are suitable for various inclined or arc-shaped tower bodies, and the materials used are very common, there is no need to purchase new materials, and most of the components can be recycled and reused, avoiding the underutilization and waste of existing steel structure resources. In addition, the structure is simple and the construction is convenient and quick. While reducing construction investment and saving engineering costs, it greatly reduces the construction difficulty, speeds up the construction progress, and is conducive to ensuring structural safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings that constitute a part of the present invention are used to provide further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 It is a schematic diagram of the transverse bridge structure of an embodiment;

[0018] Figure 2 A schematic diagram of the longitudinal structure of the embodiment;

[0019] Figure 3 It is a structural schematic diagram of a single set of climbing cone embedded parts in the transverse direction and along the bridge direction;

[0020] Figure 4 It is a schematic diagram of the structure of a single set of braces in the transverse and longitudinal directions of the bridge.

[0021] Reference numerals in the figures: 10, climbing cone embedded part; 101, climbing cone; 102, steel plate; 20, brace; 201, steel section; 202, transverse stiffening plate. DETAILED DESCRIPTION

[0022] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0023] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0024] As shown in the figure, a structure suitable for supporting steel pipe columns on an inclined tower body of the present invention includes a climbing cone embedded part 10 and a brace 20.

[0025] The climbing cone embedded part 10 is composed of a climbing cone 101 and a steel plate 102. A plurality of climbing cones 101 are embedded at designated positions on the inner side of the two limbs of the tower body, and then a steel plate 102 of a certain thickness is placed along the inner surfaces of the two opposite sides of the tower body. The steel plate 102 is connected to the climbing cone 101 into a whole through a climbing cone nut.

[0026] The brace 20 is welded by a steel section 201 and a transverse stiffening plate 202, and its two ends are respectively welded to the climbing cone embedded parts 10 embedded in the inner side of the two tower bodies. It is characterized in that: the steel section 201 is cut strictly according to the shape of the tower body and the transverse bridge spacing at the position of the brace 20, and the transverse stiffening plate 202 is welded at the corresponding steel pipe column of the steel section 201 and at a certain interval to make it a whole, and then the two ends of the welded brace 20 are respectively welded to the climbing cone embedded parts 10 embedded in the inner side of the two tower bodies.

[0027] A construction method for supporting steel pipe columns using the above structure includes the following steps:

[0028] S1. Pre-embed a plurality of climbing cones 101 on the two inner sides of the two limbs of the tower body where the support 20 is required, and connect a steel plate 102 of a certain thickness with the climbing cone 101 on this side through a nut of the climbing cone 101 to form a climbing cone embedded part 10;

[0029] S2, cut the steel 201 strictly according to the tower shape and transverse spacing of the position of the brace 20, and weld a number of transverse stiffening plates 202 at the corresponding steel pipe column installation position and a certain interval to form the brace 20, and then weld the two ends of the brace 20 to the steel plates 102 of the climbing cone embedded parts 10 embedded in the inner side of the two limbs of the tower body respectively;

[0030] S3. Support the steel pipe column of the lower crossbeam bracket on the brace and weld it firmly;

[0031] S4. After the lower beam is cast, remove the steel pipe columns of the lower beam support;

[0032] S5. Loosen the nuts of the climbing cone 101, remove the brace 20 and the steel plates 102 of the climbing cone embedded parts 10 at both ends at the same time, and smooth the hole of the climbing cone 101 with mortar to restore it to the original design appearance.

[0033] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A structure suitable for supporting steel pipe columns on an inclined tower, characterized in that: The steel pipe column is welded and fixed on the brace, and the two ends of the brace are respectively welded and fixed to a set of steel plates of climbing cone embedded parts. The steel plates of each set of climbing cone embedded parts are detachably connected and fixed to a number of climbing cones embedded in the inner wall of one of the opposite sides of the two tower bodies through climbing cone nuts.

2. A structure suitable for supporting steel pipe columns on an inclined tower as claimed in claim 1, characterized in that: The braces are welded together by section steel and a plurality of transverse stiffening plates, and the steel pipe columns are welded and fixed on the upper surface of the section steel.

3. A structure suitable for supporting steel pipe columns on an inclined tower as claimed in claim 2, characterized in that: A plurality of transverse stiffening plates are welded to the steel sections at corresponding positions of the steel pipe columns and at certain intervals.

4. A construction method suitable for supporting steel pipe columns on an inclined tower body, characterized in that: A set of climbing cone embedded parts is respectively embedded and fixed on the inner sides of the two limbs of the tower body. The two sets of climbing cone embedded parts are respectively welded and fixed to the two ends of a group of braces that fit the shape of the tower body and the transverse distance of the bridge. The steel pipe column support is fixed on the horizontal installation surface provided by the brace.

5. A construction method suitable for supporting steel pipe columns on an inclined tower body as claimed in claim 4, characterized in that: The steps include: S1. Pre-embed a number of climbing cones on the two inner sides of the two tower bodies where the supporting positions need to be set, and connect a steel plate of a certain thickness with the climbing cone on this side through a climbing cone nut to form a climbing cone embedded part; S2. Cut the steel in strict accordance with the tower shape and transverse spacing of the position of the brace, and weld several transverse stiffening plates at the corresponding steel pipe column installation position and a certain interval to form a brace. Then, weld the two ends of the brace to the steel plates of the climbing cone embedded parts embedded in the inner side of the two limbs of the tower body respectively; S3. Support the steel pipe column of the lower crossbeam bracket on the brace and weld it firmly; S4. After the lower beam is cast, remove the steel pipe columns of the lower beam support; S5. Loosen the climbing cone nut, remove the steel plates of the supporting and embedded climbing cone parts at both ends at the same time, and smooth the climbing cone hole with mortar to restore it to the original design appearance.

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