Stiff framework suitable for construction of space linear complex concrete tower column

Abstract

The utility model provides a stiff skeleton suitable for construction of a space linear complex concrete tower column, the stiff skeleton comprises a plane truss structure composed of stiff skeleton vertical rods, stiff skeleton inclined rods and stiff skeleton horizontal rods, and a space truss structure is formed by connecting stiff skeleton parallel connection components and stiff skeleton horizontal inclined struts. Joints are connected through splice plates, stiff skeleton vertical inclined struts are arranged between the stiff skeleton vertical rods and the stiff skeleton parallel connection components, and stiff skeleton horizontal inclined struts are arranged between the stiff skeleton horizontal rods and the stiff skeleton parallel connection components. Stiff skeleton vertical rods of the stiff skeleton of the middle section are connected through a filling plate, and node stiffening plates are arranged on the upper side and the lower side of the filling plate respectively. The stiff framework provided by the utility model replaces a traditional cast-in-place support construction method, the steel consumption of a temporary structure is reduced, the adaptability to surrounding geology and environmental conditions is improved, the steel bar construction difficulty is reduced, and the stress performance of the space linear complex tower column is effectively improved.

Description

Technical Field

[0001] The invention belongs to the technical field of bridge engineering, and in particular relates to a rigid skeleton suitable for the construction of concrete tower columns with complex spatial linear shapes. Background Art

[0002] As an architectural work of art, bridges have been given more significance in modern society. People are constantly proposing new concepts and new design shapes, and various bridge towers with complex linear shapes have emerged. At present, the construction of concrete towers with complex spatial linear shapes mainly adopts the bracket method. The concrete towers with complex spatial linear shapes require high linear precision, large structural rigidity, and a large concrete volume. Therefore, a support system with great structural strength and rigidity is required. Not only does it require a large amount of steel and high cost, but for projects with complex geological conditions and surrounding environments, the construction of the support system itself is also a major challenge, and water construction is even more difficult. In addition, the concrete towers with complex spatial linear shapes are subject to complex forces, and the large number of steel bars and complex spatial linear shapes also lead to difficulties in steel bar installation and difficult control of the thickness of the protective layer. In addition, the concrete towers with complex spatial linear shapes are subject to complex forces after the bridge is completed due to the complexity of their structure itself. Therefore, how to ensure that they can have good performance during construction and bridge operation, and how to ensure their complex spatial linear shapes, requires further research in combination with design and construction. Summary of the invention

[0003] In view of this, the invention aims to overcome the defects in the prior art and proposes a rigid skeleton suitable for the construction of concrete tower columns with complex spatial linear shapes.

[0004] To achieve the above object, the technical solution created by the present invention is implemented as follows:

[0005] A rigid frame suitable for the construction of a spatial linear complex concrete tower column, comprising a three-part rigid frame of a bottom section, an intermediate section and a top section; the rigid frame comprises a plane truss structure composed of a rigid frame vertical rod, a rigid frame diagonal rod and a rigid frame horizontal rod, and is connected into a spatial truss structure by a rigid frame horizontal connecting member and a rigid frame horizontal diagonal brace; the nodes of the rigid frame of the bottom section and the rigid frame of the intermediate section, and the nodes of the rigid frame of the intermediate section and the rigid frame of the top section are all connected by a splicing plate, and the rigid frame vertical rods of each rigid frame and the rigid frame horizontal connecting member are connected by a splicing plate. Vertical diagonal braces of the rigid frame are arranged between the components, and horizontal diagonal braces of the rigid frame are arranged between the rigid frame horizontal bars of each rigid frame and the rigid frame parallel-connected components; the rigid frame vertical bars of the middle segment rigid frame are connected by filling plates, and node stiffening plates are arranged on the upper and lower sides of the filling plates respectively; the rigid frame vertical bars of the bottom section rigid frame all protrude downward from the lowest rigid frame parallel-connected components; formwork and rigid frame connectors are arranged on the outermost rigid frame vertical bars of each part of the rigid frame, as well as on the innermost rigid frame vertical bars of the three parts of the rigid frame of the middle segment and the top section.

[0006] Furthermore, two node stiffening plates are respectively provided on the upper and lower sides of the filler plate, and the node stiffening plates on the upper and lower sides of the filler plate are symmetrically arranged.

[0007] Furthermore, the nodes of each rigid frame are fixed by welding.

[0008] Furthermore, the splicing plate is a splicing plate with air holes.

[0009] Furthermore, the uppermost rigid frame parallel-jointed component of the top rigid frame is located at the top end of its rigid frame vertical rod, and its rigid frame vertical rod does not protrude upward from the rigid frame parallel-jointed component.

[0010] Furthermore, the vertical diagonal braces of the rigid frame are made of channel steel.

[0011] Furthermore, the horizontal diagonal braces of the rigid frame are made of channel steel.

[0012] Compared with the prior art, the present invention has the following advantages:

[0013] The construction method of the present invention replaces the traditional cast-in-place support construction method with a rigid skeleton, thereby saving the amount of steel used in temporary structures, improving adaptability to surrounding geological and environmental conditions, and expanding the scope of application of tower columns with complex spatial linear shapes. It is beneficial to reduce the amount of steel bars used in tower columns with complex linear shapes, reduces the difficulty of steel bar construction, and effectively improves the stress performance of tower columns with complex spatial linear shapes. At the same time, it improves the seismic performance of tower columns after they are completed as bridges. It can ensure the accurate position of steel bars during installation, provide spatial positions for precise adjustment and fixation of the construction template position, and play a beneficial role in controlling the overall deviation of the tower column. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The drawings constituting part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments and descriptions of the present invention are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0015] Figure 1 A schematic diagram of the structure when the present invention is created and applied;

[0016] Figure 2 The structural schematic diagram of the rigid skeleton at the cross section of the tower column in the invention;

[0017] Figure 3 A schematic diagram of the structure of the connection point of the vertical rod of the rigid frame of the intermediate segment rigid frame created by the present invention;

[0018] Figure 4 The invention provides a structural schematic diagram of the connection node portion of the rigid skeleton vertical rods, the rigid skeleton diagonal rods and the rigid skeleton parallel connecting components. DETAILED DESCRIPTION

[0019] 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.

[0020] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0021] In the description of the invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the invention can be understood according to specific circumstances.

[0022] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0023] A rigid skeleton suitable for the construction of complex linear concrete tower columns, such as Figures 1 to 4 As shown, the rigid skeleton includes three parts, namely, a bottom section, an intermediate section and a top section; the rigid skeleton includes a plane truss structure composed of a rigid skeleton vertical rod 4, a rigid skeleton diagonal rod 5 and a rigid skeleton horizontal rod 6, and is connected into a spatial truss structure by a rigid skeleton horizontal connecting member 7 and a rigid skeleton horizontal diagonal brace 8, and the nodes of the bottom section rigid skeleton 3 and the intermediate section rigid skeleton 2, and the nodes of the intermediate section rigid skeleton and the top section rigid skeleton 1 are all connected by a splicing plate 9.

[0024] A rigid frame vertical diagonal brace 10 is provided between the rigid frame vertical bars of each rigid frame and the rigid frame parallel connection member, and a rigid frame horizontal diagonal brace is provided between the rigid frame horizontal bars of each rigid frame and the rigid frame parallel connection member; the rigid frame vertical bars of the middle segment rigid frame are connected by a filling plate 12, and node stiffening plates 13 are provided on the upper and lower sides of the filling plate respectively; the rigid frame vertical bars of the bottom section rigid frame all protrude downward from the lowest rigid frame parallel connection member; templates and rigid frame connectors 14 are provided on the outermost rigid frame vertical bars of each part of the rigid frame, as well as on the innermost rigid frame vertical bars of the three parts of the rigid frame of the middle segment and the top section.

[0025] After the rigid frame is installed, a space truss is formed, which has high rigidity and accurate position. The rigid frame, steel frame and template can be welded or connected into a whole, which greatly enhances its rigidity and wind resistance. In addition, after the rigid frame forms a space truss, it is itself a simple construction platform structure. As long as the panels are laid on it, it can become a large construction work surface. In addition, when workers operate at high altitudes, they can also use the reliable rigid frame to fix the safety belt, which plays a role in safety protection for workers.

[0026] The present invention replaces the traditional cast-in-place support construction method with a rigid skeleton structure, which saves the amount of steel used in temporary structures, improves adaptability to surrounding geological and environmental conditions, and expands the scope of application of tower columns with complex spatial linear shapes. It can also ensure that the position of the steel bars is accurate during installation and that the protective layer can be guaranteed. When installing steel bars in high pier construction, the steel bars will swing back and forth due to the strong wind force, which brings many difficulties to the positioning of the steel bars; coupled with the complex spatial linear shapes of concrete tower columns, the steel bars are also complex spatial linear shapes, making positioning extremely difficult. As a result, the installation position of the steel bars is inaccurate, and the thickness of the steel bar protective layer is difficult to control. During the installation process, a rigid skeleton is used to correct and fix the rigidity of the steel bars, which can ensure that the position of the steel bars is accurate during installation and that the thickness of the protective layer can be guaranteed.

[0027] Usually, two node stiffening plates are provided on the upper and lower sides of the filler plate, and the node stiffening plates on the upper and lower sides of the filler plate are arranged symmetrically. The nodes of each rigid frame are welded and fixed. The splicing plate adopts a splicing plate with air holes. As an example, the vertical diagonal brace of the rigid frame is made of channel steel. The horizontal diagonal brace of the rigid frame is made of channel steel.

[0028] The rigid frame vertical rods of the bottom rigid frame all protrude downward from the rigid frame horizontal connecting member at the bottom; the rigid frame horizontal connecting member at the top of the top rigid frame is at the top of its rigid frame vertical rods, and its rigid frame vertical rods do not protrude upward from the rigid frame horizontal connecting member. This structural design makes the bottom rigid frame more firmly combined with the tower base and more stable, while the top of the top rigid frame (tower column top) is relatively flat, meeting the engineering requirements.

[0029] A method for constructing a concrete tower column using the above-mentioned rigid skeleton is provided below, comprising the following steps:

[0030] After the construction of the pedestal 15 is completed, the bottom section rigid frame is installed and accurately positioned, the tower base is cast, and the bottom section rigid frame is pre-buried in the tower base 16; then the middle section of the rigid frame is installed, accurately positioned, and firmly connected to the bottom section rigid frame; then the installers operate the platform 11, tie the tower column steel bars, install the tower column formwork, and cast the first layer of concrete; then according to the designated tower column concrete segmentation line 17, each layer of concrete is cast from bottom to top in sequence until the top layer of concrete casting is completed.

[0031] When installing the bottom section rigid frame, the rigid frame vertical bars, rigid frame diagonal bars, and rigid frame horizontal bars first form a plane truss, and then are connected to form a spatial truss structure through the rigid frame flat joint and the rigid frame horizontal diagonal brace. The rigid frame nodes are connected through splicing plates with air holes to form the rigid frame bottom section, which is hoisted as a whole to the tower column construction position for positioning and installation. The rigid frame vertical bars in the middle section of the rigid frame are connected through filler plates and stiffening plates. All node connections of the above rigid frames are constructed by welding.

[0032] The construction method of the present invention replaces the traditional cast-in-place support construction method with a rigid skeleton, which saves the amount of steel used in temporary structures, improves the adaptability to surrounding geological and environmental conditions, expands the scope of application of tower columns with complex linear shapes in space, is conducive to reducing the amount of steel bars used in tower columns with complex linear shapes, reduces the difficulty of steel bar construction, effectively improves the force-bearing performance of tower columns with complex linear shapes in space, and improves the seismic performance of tower columns after they are completed into bridges. It can ensure the accurate position of steel bars during installation, provide a spatial position for the precise adjustment and fixation of the construction template position, and play a favorable role in the overall deviation control of the tower column. In addition, after the rigid skeleton in the present invention forms a spatial truss, it itself is a simple construction platform. As long as the panels are laid on it, it can become a large construction work surface. In addition, when workers operate at high altitudes, they can also use a reliable rigid skeleton to fix the safety belt, which plays a role in safety protection for the workers.

[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 rigid skeleton suitable for the construction of concrete tower columns with complex spatial linear shapes, characterized by: The invention comprises a rigid skeleton of three parts, namely, a bottom section, an intermediate section and a top section; the rigid skeleton comprises a plane truss structure composed of a rigid skeleton vertical rod, a rigid skeleton diagonal rod and a rigid skeleton horizontal rod, and is connected into a spatial truss structure by a rigid skeleton horizontal connecting member and a rigid skeleton horizontal diagonal brace; the nodes of the rigid skeleton of the bottom section and the rigid skeleton of the intermediate section, and the nodes of the rigid skeleton of the intermediate section and the rigid skeleton of the top section are connected by a splicing plate, and a rigid skeleton vertical diagonal brace is provided between the rigid skeleton vertical rod and the rigid skeleton horizontal connecting member of each rigid skeleton A rigid frame horizontal diagonal brace is arranged between the rigid frame horizontal rod of each rigid frame and the rigid frame parallel connection member; the rigid frame vertical rods of the middle segment rigid frame are connected by filling plates, and node stiffening plates are respectively arranged on the upper and lower sides of the filling plates; the rigid frame vertical rods of the bottom section rigid frame all protrude downward from the lowest rigid frame parallel connection member; templates and rigid frame connecting parts are arranged on the outermost rigid frame vertical rods of each part of the rigid frame, as well as on the innermost rigid frame vertical rods of the three parts of the rigid frame of the middle segment and the top section.

2. A rigid skeleton suitable for the construction of spatial linear complex concrete tower columns according to claim 1, characterized in that: Two node stiffening plates are respectively arranged on the upper and lower sides of the filler plate, and the node stiffening plates on the upper and lower sides of the filler plate are arranged symmetrically.

3. The rigid skeleton suitable for the construction of spatial linear complex concrete tower columns according to claim 1, characterized in that: The nodes of each rigid frame are fixed by welding.

4. The rigid skeleton suitable for the construction of spatial linear complex concrete tower columns according to claim 1, characterized in that: The splicing plate is a splicing plate with air holes.

5. The rigid skeleton suitable for the construction of spatial linear complex concrete tower columns according to claim 1, characterized in that: The uppermost rigid frame parallel connection member of the top section rigid frame is located at the top end of its rigid frame vertical rod, and its rigid frame vertical rod does not protrude upward from the rigid frame parallel connection member.

6. The rigid skeleton suitable for the construction of spatial linear complex concrete tower columns according to claim 1, characterized in that: The vertical diagonal braces of the rigid frame are made of channel steel.

7. The rigid skeleton suitable for the construction of spatial linear complex concrete tower columns according to claim 1, characterized in that: The horizontal diagonal braces of the rigid frame are made of channel steel.

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