Bridge structural systems and construction methods based on concrete slab components

Abstract

This invention discloses a bridge structural system assembled from concrete slab components, including at least one main beam, two or more cap beams, and two or more columns. Each column is an I-shaped strip structure, comprising a vertically arranged web parallel to the bridge direction, and a top and bottom plate perpendicular to the bridge direction on both sides of the web. Each cap beam includes a top plate and two side plates located below the top plate near both sides. Multiple beam webs are evenly distributed between two or more cap beams along the transverse direction. Multiple bridge deck panels are evenly distributed on top of the beam webs along the transverse direction and are connected to all beam webs as a whole through connecting structures. This invention transforms all prefabricated components of the bridge into slab components, simplifying the prefabrication process and improving production efficiency.

Description

Technical Field

[0001] This invention relates to the field of bridge construction technology, and in particular to a bridge structural system and construction method based on the assembly of concrete slab components. Background Technology

[0002] In recent years, the construction methods for concrete bridges have gradually shifted from cast-in-place construction to prefabrication and assembly processes. Current technologies typically involve prefabricating bridge piers, pier cap beams, and small box girders in a prefabrication plant, and then transporting them to the construction site for assembly. This increases on-site construction speed and reduces the environmental impact of the construction site.

[0003] In the field of bridge precast components, precast component factories need to produce beams, cap beams and columns at the same time. Since the size and weight of various components vary greatly, multiple production lines are generally required. Depending on the components being produced, supporting lifting equipment and storage platforms are set up, and professional personnel training is conducted for various types of equipment.

[0004] In terms of applying intelligent rebar placement equipment, due to the diverse sizes of prestressed concrete bridge components and the extremely dense rebar, a 6-DOF robotic arm is required. Furthermore, due to the large size of the components, the internal rebar cannot still be automatically placed.

[0005] Moreover, due to the rapid development of prefabricated bridge technology, there are now various connection structures that can effectively connect concrete slabs, and prefabricated bridge structures can perform mechanical properties that are basically equivalent to cast-in-place structures.

[0006] Therefore, existing technical solutions also have the following two drawbacks, which limit the economy and convenience of prefabricated bridge construction:

[0007] (1) Bridge components come in a variety of shapes, including long column type, polygonal type, and box type. The internal steel reinforcement structure of the components is also very diverse. During factory production, different production lines need to be set up, and it is difficult to achieve automated production.

[0008] (2) The bridge components are large in size. The weight of the columns can reach 100t, and the smallest side length is usually more than 1.5m. The weight of the cap beam can reach 300t, and the smallest side length can reach 2.5m. The weight of the small box girder can reach 150t, and the smallest height is 1.2m. Special equipment is needed to transport and hoist the overweight and oversized components.

[0009] Therefore, how to reduce the structural forms and size of prefabricated components has become a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0010] In view of the above-mentioned deficiencies of the prior art, the present invention provides a bridge structure system and construction method for assembling concrete slab components, the purpose of which is to simplify the basic structural form of precast components, improve the production efficiency of precast components, and reduce the difficulty of transportation and hoisting of precast components.

[0011] To achieve the above objectives, the present invention discloses a bridge structural system assembled from concrete slab components, including at least one main beam, two or more cap beams, and two or more columns.

[0012] The columns, the cap beams, and the main beams are all concrete structures.

[0013] Each of the columns is a strip structure with an "I"-shaped cross-section, and includes a vertically arranged column web that is parallel to the longitudinal direction of the bridge, as well as a column top plate and a column bottom plate arranged on both sides of the column web that are perpendicular to the longitudinal direction of the bridge.

[0014] Each of the column web plates is connected to the corresponding column top plate and the corresponding column bottom plate by means of a connecting structure.

[0015] Each of the aforementioned cap beams includes a cap beam top plate and two cap beam side plates disposed below the cap beam top plate near both sides;

[0016] Each of the top plates of the cap beam is connected to the corresponding two side plates of the cap beam by a connecting structure;

[0017] Each of the aforementioned cap beams is provided with at least two of the aforementioned columns below it;

[0018] The upper end of each column web plate is higher than the corresponding column top plate and the corresponding column bottom plate, and is inserted into the "concave" structure formed by the two cap beam side plates and the corresponding cap beam top plate of the corresponding cap beam;

[0019] Each of the column web plates is inserted into the upper end face of the "concave" shaped structure, and the two sides near the upper end are respectively connected to the corresponding top plate of the cap beam and the two side plates of the cap beam through a connecting structure.

[0020] The two side plates of each cap beam are connected together with the top plate and bottom plate of each corresponding column through a connecting structure.

[0021] Each of the main beams comprises multiple webs and multiple bridge deck panels;

[0022] Multiple beam webs are evenly distributed along the transverse bridge direction between two or more cap beams;

[0023] Multiple bridge deck panels are evenly distributed on top of multiple beam webs along the transverse direction of the bridge, and are connected to all beam webs as a whole through a connecting structure.

[0024] Preferably, every four of the columns, two of the cap beams, and one of the main beams constitute a unit.

[0025] Preferably, the span of each main beam is 30m; the height of each cap beam is 1.6m and the width is 15m.

[0026] The height of each column top plate and the corresponding column bottom plate is the same, which is 10m.

[0027] The height of the web of each column is 11.6m.

[0028] Preferably, each of the column web, each of the column top plate, each of the column bottom plate, each of the cap beam top plate, each of the cap beam side plate, each of the beam web, and each of the bridge decks comprises a plurality of segments connected sequentially by a connecting structure.

[0029] The present invention also provides a method for constructing a bridge structure system assembled from concrete slab components, comprising the following steps:

[0030] Step 1: Prefabricate all the column webs, column top plates, column bottom plates, cap beam top plates, cap beam side plates, beam webs, and bridge deck panels required for the project, and transport them to the construction site.

[0031] Step 2: Install all the aforementioned column webs;

[0032] Step 3: Install all column top plates and all column bottom plates, and connect each column top plate and each column bottom plate to the corresponding column web plate;

[0033] Step 4: Install all the cap beam side plates, and each cap beam side plate is connected to the corresponding column top plate or the corresponding column bottom plate;

[0034] Step 5: Install all the top plates of the cap beams and connect each top plate of the cap beam to the corresponding side plate of the cap beam;

[0035] Step 6: Install all the aforementioned beam webs;

[0036] Step 7: Install all the bridge deck panels and connect all the bridge deck panels to all the beam webs to form a whole.

[0037] The beneficial effects of this invention are:

[0038] The present invention transforms all prefabricated components of the bridge into plate-like components, which will simplify the process flow of the prefabrication plant and improve the production efficiency of the prefabrication plant.

[0039] The various plate-shaped components in this invention are thin and lightweight, making them easier to transport and hoist, thus reducing transportation and hoisting costs.

[0040] The following will further explain the concept, specific structure, and technical effects of the present invention in conjunction with the accompanying drawings, so as to fully understand the purpose, features, and effects of the present invention. Attached Figure Description

[0041] Figure 1 A cross-sectional view of the overall layout of an embodiment of the present invention is shown.

[0042] Figure 2 An elevation view of the overall layout of an embodiment of the present invention is shown.

[0043] Figure 3 A cross-sectional view of the column structure according to an embodiment of the present invention is shown.

[0044] Figure 4 An elevation view of a column structure according to an embodiment of the present invention is shown.

[0045] Figure 5 A cross-sectional view of the cap beam structure according to an embodiment of the present invention is shown.

[0046] Figure 6 An elevation view of a cap beam structure according to an embodiment of the present invention is shown.

[0047] Figure 7 A cross-sectional view of the main beam structure according to an embodiment of the present invention is shown.

[0048] Figure 8 The following describes construction steps 1 of an embodiment of the present invention.

[0049] Figure 9 The following is a construction step 2 of an embodiment of the present invention.

[0050] Figure 10 The following is a construction step 3 of an embodiment of the present invention.

[0051] Figure 11 The following is a construction step 4 of an embodiment of the present invention.

[0052] Figure 12 The following is a construction step 5 of an embodiment of the present invention.

[0053] Figure 13 The following is a construction step 6 of an embodiment of the present invention.

[0054] Figure 14 The following is a construction step 7 of an embodiment of the present invention. Detailed Implementation

[0055] Example

[0056] like Figures 1 to 7 As shown, the bridge structural system assembled from concrete slab components includes at least one main beam 3, two or more cap beams 2, and two or more columns 1.

[0057] Among them, column 1, cap beam 2 and main beam 3 are all concrete structures;

[0058] Each column 1 is a strip structure with an "I" shaped cross section, including a vertically arranged column web 11 that is parallel to the longitudinal direction of the bridge, and a column top plate 12 and a column bottom plate 13 arranged on both sides of the column web 11 that are perpendicular to the longitudinal direction of the bridge.

[0059] Each column web 11 is connected to the corresponding column top plate 12 and the corresponding column bottom plate 13 by a connecting structure.

[0060] Each cap beam 2 includes a cap beam top plate 22 and two cap beam side plates 21 disposed below the cap beam top plate 22 near the two sides;

[0061] Each cap beam top plate 22 is connected to the corresponding two cap beam side plates 21 by a connection structure;

[0062] Each cap beam 2 is provided with at least two columns 1 below it;

[0063] The upper end of each column web 11 is higher than the corresponding column top plate 12 and the corresponding column bottom plate 13, and is inserted into the "concave" structure formed by the two cap beam side plates 21 and the corresponding cap beam top plate 22 of the corresponding cap beam 2.

[0064] Each column web 11 is inserted into the upper end face of the "concave" shaped structure, and the two sides near the upper end are connected to the corresponding cap beam top plate 22 and the two cap beam side plates 21 through the connection structure.

[0065] The two side plates 21 of each cap beam 2 are connected to the top plate 12 and bottom plate 13 of each corresponding column 1 through a connection structure.

[0066] Each main beam 3 includes multiple beam webs 31 and multiple bridge deck panels 32;

[0067] Multiple beam webs 31 are evenly distributed along the transverse direction between two or more cap beams 2;

[0068] Multiple bridge deck panels 32 are evenly distributed on top of multiple beam webs 31 along the transverse direction of the bridge, and are connected to all beam webs 31 as a whole through a connecting structure.

[0069] This invention transforms prefabricated bridge components into several types of plate-like components, including column web 11, column top plate 12, column bottom plate 13, cap beam top plate 22, cap beam side plate 21, beam web 31, and bridge deck 32. This allows for standardized production methods, equipment, and personnel across all production lines in the factory. Furthermore, the reduced component size leads to lower production equipment costs.

[0070] Meanwhile, because slab components are thin, typically no more than 0.5m thick, after the robotic arm completes the surface reinforcement arrangement, it only needs to insert the reinforcement bars within 0.5m into the reinforcement cage. The robotic arm is easy to operate, enabling automated production. Furthermore, since they are all slab components, the difficulty of centralized steam curing is also greatly reduced. Therefore, this structural scheme can significantly improve the production efficiency of component factories.

[0071] The plate division method in this invention fully considers the stress requirements of the bridge structure. Based on the basic principles of structural mechanics, it ensures the core functional requirements of the main beam resisting bending and shear, the cap beam resisting bending and shear, and the columns resisting bending and compression.

[0072] In practical applications, each column web 11 is connected to the corresponding column top plate 12 and the corresponding column bottom plate 13 through a connecting structure, so that the three become structural components that can work together to bear the load.

[0073] The top plate 22 of the cap beam and the corresponding two side plates 21 of the cap beam, the part of the column web plate 11 inserted into the concave structure of the cap beam 2 and the top plate 22 of the cap beam, the two side plates 21 of the cap beam, and the two side plates 21 of the cap beam and the corresponding top plate 12 and bottom plate 13 of the column are all connected together by a connection structure to form structural components that can cooperate in bearing the load.

[0074] In some embodiments, every four columns 1, two cap beams 2, and one main beam 3 constitute a unit.

[0075] In some embodiments, each main beam 3 has a span of 30m; each cap beam 2 has a height of 1.6m and a width of 15m.

[0076] The height of each column top plate 12 and the corresponding column bottom plate 13 is the same, which is 10m.

[0077] The height of the web of each column 11 is 11.6m.

[0078] In some embodiments, each column web 11, each column top plate 12, each column bottom plate 13, each cap beam top plate 22, each cap beam side plate 21, each beam web 31, and each bridge deck 32 includes multiple segments connected sequentially by a connecting structure.

[0079] like Figures 8 to 14As shown, the present invention also provides a method for constructing a bridge structure system assembled from concrete slab components, comprising the following steps:

[0080] Step 1: Prefabricate all the column webs 11, all column top plates 12, all column bottom plates 13, all cap beam top plates 22, all cap beam side plates 21, all beam webs 31 and all bridge deck panels 32 required for the project, and transport them to the construction site.

[0081] Step 2: Install all column webs 11;

[0082] Step 3: Install all column top plates 12 and all column bottom plates 13, and connect each column top plate 12 and each column bottom plate 13 to the corresponding column web plate 11.

[0083] Step 4: Install all the cap beam side plates 21. Each cap beam side plate 21 is connected to the corresponding column top plate 12 or the corresponding column bottom plate 13.

[0084] Step 5: Erect all the top plates 22 of the cap beams and connect each top plate 22 of the cap beam to the corresponding side plate 21 of the cap beam.

[0085] Step 6: Erect all beam webs 31;

[0086] Step 7: Install all bridge deck panels 32 and connect all bridge deck panels 32 with all beam webs 31 to form a whole.

[0087] The preferred embodiments of the present invention have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of the present invention without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of the present invention through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A method of constructing a bridge structure system of concrete slab members assembled; characterized by, It includes at least one main beam (3), two or more cap beams (2) and two or more columns (1); The column (1), the cap beam (2), and the main beam (3) are all concrete structures; Each of the columns (1) is a strip structure with an "I" shaped cross section, including a column web (11) that is vertically arranged and parallel to the bridge direction, and a column top plate (12) and a column bottom plate (13) that are arranged on both sides of the column web (11) and are perpendicular to the bridge direction. Each of the column web plates (11) is connected to the corresponding column top plate (12) and the corresponding column bottom plate (13) by means of a connecting structure; Each of the above-mentioned cap beams (2) includes a cap beam top plate (22) and two cap beam side plates (21) disposed below the cap beam top plate (22) near the two sides. Each of the top plates (22) of the cap beam is connected to the corresponding two side plates (21) of the cap beam by a connecting structure; Each of the above-mentioned cap beams (2) is provided with at least two of the above-mentioned columns (1); The upper end of each column web (11) is higher than the corresponding column top plate (12) and the corresponding column bottom plate (13), and is inserted into the "concave" structure formed by the two cap beam side plates (21) and the corresponding cap beam top plate (22) of the corresponding cap beam (2); Each of the column web plates (11) is inserted into the upper end face of the "concave" shaped structure, and the two sides near the upper end are respectively connected to the corresponding top plate (22) of the cap beam and the two side plates (21) of the cap beam through a connecting structure. The two side plates (21) of each cap beam (2) are connected together with the top plate (12) and the bottom plate (13) of each corresponding column (1) by a connection structure. Each of the main beams (3) includes multiple beam webs (31) and multiple bridge deck panels (32); Multiple web plates (31) of the beams are evenly distributed along the transverse direction between two or more cap beams (2); Multiple bridge deck panels (32) are evenly distributed on the top of multiple beam webs (31) along the transverse direction of the bridge, and are connected to all beam webs (31) as a whole through a connection structure; Each unit consists of four of the aforementioned columns (1), two of the aforementioned cap beams (2), and one of the aforementioned main beams (3); Each of the column web (11), each of the column top plate (12), each of the column bottom plate (13), each of the cap beam top plate (22), each of the cap beam side plate (21), each of the beam web (31), and each of the bridge deck (32) includes multiple segments connected sequentially by a connecting structure. The construction method includes the following steps: Step 1: Prefabricate all required column webs (11), all column top plates (12), all column bottom plates (13), all cap beam top plates (22), all cap beam side plates (21), all beam webs (31), and all bridge deck panels (32) in the factory and transport them to the construction site; Step 2: Install all the aforementioned column webs (11); Step 3: Install all column top plates (12) and all column bottom plates (13), and connect each column top plate (12) and each column bottom plate (13) to the corresponding column web plate (11); Step 4: Install all the cap beam side plates (21), and each cap beam side plate (21) is connected to the corresponding column top plate (12) or the corresponding column bottom plate (13); Step 5: Erect all the top plates (22) of the cap beams and connect each top plate (22) of the cap beams to the corresponding side plates (21) of the cap beams; Step 6: Erect all the web plates of the beams (31); Step 7: Install all the bridge deck panels (32) and connect all the bridge deck panels (32) with all the beam webs (31) into a whole.

2. The construction method of the bridge structure system assembled with concrete slab components according to claim 1, characterized in that, Each of the main beams (3) has a span of 30m; each of the cap beams (2) has a height of 1.6m and a width of 15m; The height of each column top plate (12) and the corresponding column bottom plate (13) is the same, both being 10m. The height of each of the column webs (11) is 11.6m.

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