Prefabricated T-beam to prefabricated box beam pedestal and its modification method

Abstract

The present application discloses a prefabricated T-beam-to-prefabricated box-beam pedestal and its modification method. The prefabricated T-beam-to-prefabricated box-beam pedestal comprises: an original T-beam pedestal, a foundation widening portion, a first box-beam pedestal end, and a plurality of transition widening portions; the original T-beam pedestal comprises a designated pedestal end and a transition foundation section, the first box-beam pedestal end is arranged at a position at a first designated distance from the designated pedestal end, and the transition foundation section is located between the designated pedestal end and the first box-beam pedestal end; the foundation widening portion is located underground and connected to the underground portion of the transition foundation section, the transition widening portion is arranged on the foundation widening portion, one side of the transition widening portion is connected to the above-ground portion of the transition foundation section, and the upper end of the transition widening portion is flush with the top of the transition foundation section. The present application solves the technical problem in the related art that the prefabricated box-beam pedestal cannot solve the prefabrication of beams of different structural forms in the existing prefabrication yard.

Description

Technical Field

[0001] The present application relates to the technical field of bridge engineering, and in particular to a pedestal for converting a prefabricated T-beam into a prefabricated box beam and a modification method thereof. Background Art

[0002] With the rapid development of national highway construction, the proportion of bridges is getting larger and larger, and the structural forms of precast beams are also increasing. Usually, beams and slabs of one structural form are precast on the same pedestal, and precast beams of other structural forms need to be equipped with corresponding special pedestals. This not only requires the expansion of the precast site, the increase of temporary land, and the extension of the construction period, but also increases the construction cost.

[0003] With regard to the problem that the prefabricated box girder pedestal in the related technology cannot solve the problem of prefabrication of beams of different structural forms in the existing prefabrication yard, no effective solution has been proposed so far. Summary of the invention

[0004] The main purpose of the present application is to provide a prefabricated T-beam to prefabricated box beam pedestal and its modification method, so as to solve the problem in the related art that the prefabricated box beam pedestal cannot solve the prefabrication of beams of different structural forms in the existing prefabrication yard.

[0005] In order to achieve the above objectives, in a first aspect, the present application provides a pedestal for converting a prefabricated T-beam into a prefabricated box beam.

[0006] The prefabricated T-beam-to-prefabricated box-beam pedestal according to the present application comprises: an original T-beam pedestal, a foundation widening portion, a first box-beam pedestal end, and a plurality of transition widening portions;

[0007] The original T-beam pedestal includes a designated pedestal end and a transition foundation section, the first box beam pedestal end is arranged at a position with a first designated distance from the designated pedestal end, and the transition foundation section is located between the designated pedestal end and the first box beam pedestal end;

[0008] The foundation widening portion is located underground and connected to the underground portion of the transition foundation section. The transition widening portion is arranged on the foundation widening portion. The multiple transition widening portions are arranged in sequence along the full length direction of the transition foundation section. One side of the transition widening portion is connected to the above-ground portion of the transition foundation section, and the upper end of the transition widening portion is flush with the top end of the transition foundation section.

[0009] Optionally, it also includes a second box beam pedestal end;

[0010] The second box girder pedestal end is arranged at a position which is a second specified distance away from the designated pedestal end, and the transition foundation section is located between the designated pedestal end and the second box girder pedestal end, wherein the first specified distance and the second specified distance are different.

[0011] Optionally, a plurality of transition widening portions are provided between the first box girder pedestal end and the second box girder pedestal end and the designated pedestal end respectively.

[0012] Optionally, the upper end surface of the foundation widening portion is flush with the upper end surface of the underground portion of the transition foundation section.

[0013] Optionally, the transition widening portion includes a concrete seat and a supporting steel structure;

[0014] The concrete seat is on the upper end surface of the foundation widening portion and the upper end surface of the underground part of the transition foundation section;

[0015] The supporting steel structure comprises a flat steel plate and two supporting parts;

[0016] The lower ends of the two supporting parts are fixed in the concrete seat, and the flat steel plate is placed on the upper ends of the two supporting parts.

[0017] Optionally, the supporting part includes a first steel plate, a second steel plate, an I-beam and a channel steel, the first steel plate is arranged in the concrete seat, the I-beam is arranged on the first steel plate, the second steel plate is arranged on the I-beam, the channel steel is arranged on the second steel plate, and the flat steel plate is arranged on the channel steel.

[0018] Optionally, a sealing strip is also included;

[0019] A channel steel is provided on one side of the upper end of the transition base section, the slot of the channel steel points to the connected transition widening portion, and the sealing strip is arranged in the slot of the channel steel.

[0020] Optionally, the designated pedestal end and the first box beam pedestal end are both provided with reserved grooves corresponding to the prefabricated box beams, the bottom of the reserved groove is provided with a bottom steel plate, the side wall of the reserved groove is provided with triangular steel, and the triangular steel is welded to the bottom steel plate.

[0021] Optionally, a double-sided adhesive layer is provided between the triangular steel corresponding to the reserved groove set on the designated pedestal end and the designated pedestal end, and a double-sided adhesive layer is provided between the triangular steel corresponding to the reserved groove set on the first box girder pedestal end and the first box girder pedestal end.

[0022] In a second aspect, the present application also provides a method for converting a prefabricated T-beam into a prefabricated box beam pedestal, the method comprising:

[0023] Disposing a first box beam pedestal end at a first specified distance from a specified pedestal end in the original T beam pedestal;

[0024] A groove having the same embedded depth as the transition foundation section in the original T-beam pedestal is excavated between the designated pedestal end and the first box beam pedestal end, and the groove is adjacent to the transition foundation section;

[0025] pouring concrete in the groove so that the poured concrete forms a foundation widening portion on one side of the transition foundation section;

[0026] A plurality of transition widening portions are sequentially arranged on the foundation widening portion, wherein one side of the transition widening portion is connected to the portion of the transition foundation section exposed to the ground, and the upper end of the transition widening portion is flush with the upper end of the transition foundation section.

[0027] In an embodiment of the present application, a prefabricated T-beam to prefabricated box beam pedestal is provided, which is provided by: an original T-beam pedestal, a foundation widening portion, a first box beam pedestal end and a plurality of transition widening portions; the original T-beam pedestal includes a designated pedestal end and a transition foundation section, the first box beam pedestal end is arranged at a position which is a first designated distance away from the designated pedestal end, and the transition foundation section is located between the designated pedestal end and the first box beam pedestal end; the foundation widening portion is located underground and connected to the underground portion of the transition foundation section, the transition widening portion is arranged on the foundation widening portion, the plurality of transition widening portions are arranged in sequence along the length direction of the transition foundation section, one side of the transition widening portion is connected to the above-ground portion of the transition foundation section, and the upper end of the transition widening portion is flush with the top end of the transition foundation section. In this way, by modifying the prefabricated T-beam pedestal, that is, setting the foundation widening part, the first box beam pedestal end and multiple transition widening parts, a prefabricated box beam pedestal for prefabricating box beams can be formed; it makes full use of the existing prefabricated T-beam pedestal, and measures are taken on the pedestal to meet the box beam prefabrication, without the need to build a new prefabrication site and pedestal; thereby solving the technical problem in the related art that the prefabricated box beam pedestal cannot solve the prefabrication of beams of different structural forms in the existing prefabrication site. At the same time, this application can speed up the construction progress and reduce construction investment. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The drawings constituting a part of this application are used to provide a further understanding of this application, so that other features, purposes and advantages of this application become more obvious. The schematic embodiment drawings and their descriptions of this application are used to explain this application and do not constitute an improper limitation on this application. In the drawings:

[0029] Figure 1 It is a top view schematic diagram of a prefabricated T-beam-to-prefabricated box beam pedestal provided according to an embodiment of the present application;

[0030] Figure 2 It is a front view schematic diagram of a prefabricated T-beam-to-prefabricated box beam pedestal provided according to an embodiment of the present application;

[0031] Figure 3 yes Figure 1 Schematic diagram of the structure of the middle AA section;

[0032] Figure 4 yes Figure 1 Structural diagram of the middle BB end surface;

[0033] Figure 5 It is a partial large-scale drawing of a transition foundation segment provided in an embodiment of the present application;

[0034] Figure 6 This is a partial large-scale diagram of a reserved slot provided in an embodiment of the present application. DETAILED DESCRIPTION

[0035] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0036] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present application described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0037] In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0038] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to specific circumstances.

[0039] In addition, the terms "installed", "set", "provided with", "connected", "slidingly connected", and "fixed" should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0040] In addition, the term "plurality" shall mean two or more.

[0041] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0042] like Figure 1-Figure 6 As shown, the embodiment of the present application provides a prefabricated T-beam to prefabricated box beam pedestal, the device comprises an original T-beam pedestal, a basic widening portion 3, a first box beam pedestal end 4 and a plurality of transition widening portions 5;

[0043] The original T-beam pedestal includes a designated pedestal end 1 and a transition base section 2, the first box beam pedestal end 4 is arranged at a position with a first designated distance from the designated pedestal end 1, and the transition base section 2 is located between the designated pedestal end 1 and the first box beam pedestal end 4;

[0044] The foundation widening portion 3 is located underground and connected to the underground portion of the transition foundation segment 2. The transition widening portion 5 is arranged on the foundation widening portion 3. The multiple transition widening portions 5 are arranged in sequence along the full length direction of the transition foundation segment 2. One side of the transition widening portion 5 is connected to the above-ground portion of the transition foundation segment 2, and the upper end of the transition widening portion 5 is flush with the top end of the transition foundation segment 2.

[0045] Among them, the designated pedestal end 1 is a pedestal end in the original T-beam pedestal. During construction, one pedestal end can be selected from the two pedestal ends in the original T-beam pedestal as the designated pedestal end, and the transition foundation section 2 is the transition foundation section in the original T-beam pedestal.

[0046] Specifically, by modifying the prefabricated T-beam pedestal, that is, setting a basic widening portion 3, a first box beam pedestal end 4 and a plurality of transition widening portions 5, a prefabricated box beam pedestal for prefabricating box beams can be formed; it makes full use of the existing prefabricated T-beam pedestal, and by taking measures on the pedestal, it can meet the needs of box beam prefabrication, without the need to build a new prefabrication site and pedestal; thereby solving the technical problem in the related technology that the prefabricated box beam pedestal cannot solve the prefabrication of beams of different structural forms in the existing prefabrication site.

[0047] like Figure 1 and Figure 2 As shown, optionally, it also includes a second box beam pedestal end 6;

[0048] The second box girder pedestal end 6 is arranged at a position which is a second specified distance away from the designated pedestal end 1, and the transition base section 2 is located between the designated pedestal end 1 and the second box girder pedestal end 6, wherein the first specified distance and the second specified distance are not the same.

[0049] Specifically, by setting the second box beam pedestal end 6, the prefabricated T-beam-to-prefabricated box beam pedestal can be used to manufacture prefabricated box beams of two different specifications.

[0050] The first designated distance may be 26 meters, and the second designated distance may be 31 meters.

[0051] Optionally, a plurality of transition widening portions 5 are provided between the first box girder pedestal end 4 and the second box girder pedestal end 6 and the designated pedestal end 1, respectively.

[0052] The transition widening portion 5 can be evenly arranged.

[0053] As 1 and Figure 3 As shown, in addition, optionally, at least one transition widening portion 5 may also be provided on the designated pedestal end 1 .

[0054] Specifically, the upper end surface of the foundation widening portion 3 is flush with the upper end surface of the underground portion of the transition foundation section 2 .

[0055] like Figure 3 and Figure 4 As shown, optionally, the transition widening portion 5 includes a concrete seat 7 and a supporting steel structure;

[0056] The concrete seat 7 is on the upper end surface of the foundation widening portion 3 and the upper end surface of the underground part of the transition foundation section 2;

[0057] The supporting steel structure comprises a flat steel plate 8 and two supporting parts;

[0058] The lower ends of the two supporting parts are fixed in the concrete seat 7, and the flat steel plate 8 is placed on the upper ends of the two supporting parts.

[0059] In this embodiment, the above structure is adopted, which can improve the overall strength of the transition widening portion 5 and also make the transition widening portion 5 easy to manufacture or modify on site.

[0060] like Figure 3 and Figure 4 As shown, specifically, the supporting part includes a first steel plate 9, a second steel plate 10, an I-beam 11 and a channel steel 12, the first steel plate 9 is arranged in the concrete seat 7, the I-beam 11 is arranged on the first steel plate 9, the second steel plate 10 is arranged on the I-beam 11, the channel steel 12 is arranged on the second steel plate 10, and the flat steel plate 8 is arranged on the channel steel 12.

[0061] like Figures 3 to 5 As shown, optionally, in order to prevent grout leakage between the transition widening portion 5 and the transition base section 2, the prefabricated T-beam-to-prefabricated box beam pedestal further includes a sealing strip 14;

[0062] A channel steel 13 is provided at one side of the upper end of the transition base section 2 , the groove of the channel steel 13 points to the connected transition widening portion 5 , and the sealing strip 14 is arranged in the groove of the channel steel 13 .

[0063] The sealing strip 14 may be a rubber strip.

[0064] like Figure 6 As shown, specifically, the designated pedestal end 1 and the first box beam pedestal end 4 are both provided with a reserved groove 15 corresponding to the prefabricated box beam, the bottom of the reserved groove 15 is provided with a bottom steel plate 16, the side wall of the reserved groove 15 is provided with a triangular steel 17, and the triangular steel 17 is welded to the bottom steel plate 16.

[0065] Optionally, in order to prevent leakage of mortar from the outer side of the triangular steel 17, a double-sided adhesive layer is provided between the triangular steel 17 corresponding to the reserved groove 15 provided on the designated pedestal end 1 and the designated pedestal end 1, and a double-sided adhesive layer 18 is provided between the triangular steel 17 corresponding to the reserved groove provided on the first box girder pedestal end 4 and the first box girder pedestal end 4.

[0066] In addition, the designated pedestal end 1, the first box girder pedestal end 4 and the second box girder pedestal end 6 are all provided with beam lifting holes to facilitate the placement of lifting equipment when the box girder is extracted.

[0067] In addition, steel meshes are provided in the first box girder pedestal end 4 and the second box girder pedestal end 6 .

[0068] In an embodiment of the present application, a prefabricated T-beam to prefabricated box beam pedestal is provided, which is provided with: an original T-beam pedestal, a foundation widening portion 3, a first box beam pedestal end 4 and a plurality of transition widening portions 5; the original T-beam pedestal includes a designated pedestal end 1 and a transition foundation section 2, the first box beam pedestal end 4 is arranged at a position which is a first designated distance away from the designated pedestal end 1, and the transition foundation section 2 is located between the designated pedestal end 1 and the first box beam pedestal end 4; the foundation widening portion 3 is located underground and connected to the underground part of the transition foundation section 2, the transition widening portion 5 is arranged on the foundation widening portion 3, the plurality of transition widening portions 5 are arranged in sequence along the length direction of the transition foundation section 2, one side of the transition widening portion 5 is connected to the above-ground part of the transition foundation section 2, and the upper end of the transition widening portion 5 is flush with the top of the transition foundation section 2. In this way, by modifying the prefabricated T-beam pedestal, that is, setting the foundation widening part 3, the first box beam pedestal end 4 and multiple transition widening parts 5, a prefabricated box beam pedestal for prefabricating box beams can be formed; it makes full use of the existing prefabricated T-beam pedestal, and measures are taken on the pedestal to meet the box beam prefabrication, without the need to build a new prefabrication site and pedestal; thereby solving the technical problem in the related art that the prefabricated box beam pedestal cannot solve the prefabrication of beams of different structural forms in the existing prefabrication site. At the same time, this application can speed up the construction progress and reduce construction investment.

[0069] Based on the same technical concept, the present application also provides a method for converting a prefabricated T-beam into a prefabricated box beam pedestal, the method comprising:

[0070] A first box beam pedestal end 4 is arranged at a first designated distance from a designated pedestal end 1 in the original T beam pedestal;

[0071] A groove having the same embedded depth as the transition foundation section 2 in the original T-beam pedestal is excavated between the designated pedestal end 1 and the first box beam pedestal end 4, and the groove is adjacent to the transition foundation section 2;

[0072] pouring concrete in the groove so that the poured concrete forms a foundation widening portion on one side of the transition foundation section 2;

[0073] A plurality of transition widening portions 3 are sequentially arranged on the foundation widening portion, wherein one side of the transition widening portion 3 is connected to the portion of the transition foundation section 2 exposed on the ground, and the upper end of the transition widening portion 3 is flush with the upper end of the transition foundation section 2.

[0074] Optionally, the method further comprises:

[0075] A second box beam pedestal end 6 is arranged at a second designated distance from a designated pedestal end 1 in the original T beam pedestal.

[0076] Specifically, a groove having the same embedded depth as the transition foundation section 2 in the original T-beam pedestal is excavated between the designated pedestal end 1 and the first box beam pedestal end 4, and the groove depth may be 0.2 meters.

[0077] Specifically, pouring concrete in the slots is as follows:

[0078] The foundation widening portion 3 is cast in the slot at one time, and a funnel or chute is used in the casting process to avoid concrete segregation, and a small inserted vibrator is used for vibration to ensure that the concrete is poured densely.

[0079] Optionally, the transition width portion 5 can be evenly arranged, and each transition width portion 5 can be arranged at an interval of 1 meter. Specifically, two I10 I-beams are used as supports for each 1 meter. 10mm thick steel plates are welded on the top and bottom of the I-beams. The bottom is connected longitudinally with I10 I-beams, and 5cm thick C25 concrete is poured. [5 channel steel and T-shaped steel plate are welded on the top steel plate, and the top surface 8mm steel plate is welded to the channel steel and T-shaped steel plate into a whole to form a transition width portion 5.

[0080] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A prefabricated T-beam to prefabricated box beam pedestal, characterized in that: The prefabricated T-beam-to-prefabricated box-beam pedestal further comprises: an original T-beam pedestal, a foundation widening portion, a first box-beam pedestal end, and a plurality of transition widening portions; The original T-beam pedestal includes a designated pedestal end and a transition foundation section, the first box beam pedestal end is arranged at a position with a first designated distance from the designated pedestal end, and the transition foundation section is located between the designated pedestal end and the first box beam pedestal end; The foundation widening portion is located underground and connected to the underground portion of the transition foundation section, the transition widening portion is arranged on the foundation widening portion, the multiple transition widening portions are arranged in sequence along the length direction of the transition foundation section, one side of the transition widening portion is connected to the above-ground portion of the transition foundation section, and the upper end of the transition widening portion is flush with the top end of the transition foundation section; Also includes a second box beam pedestal end; The second box girder pedestal end is arranged at a position which is a second specified distance from the designated pedestal end, and the transition foundation section is located between the designated pedestal end and the second box girder pedestal end, wherein the first specified distance and the second specified distance are different; A plurality of transition width parts are provided between the first box beam pedestal end and the second box beam pedestal end and the designated pedestal end respectively; The upper end surface of the foundation widening portion is flush with the upper end surface of the underground portion of the transition foundation section.

2. The prefabricated T-beam to prefabricated box beam pedestal according to claim 1 is characterized in that: The transition widening portion includes a concrete seat and a supporting steel structure; The concrete seat is on the upper end surface of the foundation widening portion and the upper end surface of the underground part of the transition foundation section; The supporting steel structure comprises a flat steel plate and two supporting parts; The lower ends of the two supporting parts are fixed in the concrete seat, and the flat steel plate is placed on the upper ends of the two supporting parts.

3. The prefabricated T-beam to prefabricated box beam pedestal according to claim 2 is characterized in that: The support part includes a first steel plate, a second steel plate, an I-beam and a channel steel, the first steel plate is arranged in the concrete seat, the I-beam is arranged on the first steel plate, the second steel plate is arranged on the I-beam, the channel steel is arranged on the second steel plate, and the flat steel plate is arranged on the channel steel.

4. The prefabricated T-beam to prefabricated box beam pedestal according to claim 3 is characterized in that: It also includes sealing strips; A channel steel is provided on one side of the upper end of the transition base section, the slot of the channel steel points to the connected transition widening portion, and the sealing strip is arranged in the slot of the channel steel.

5. The prefabricated T-beam to prefabricated box beam pedestal according to claim 1 is characterized in that: The designated pedestal end and the first box beam pedestal end are both provided with reserved grooves corresponding to the prefabricated box beams, the bottom of the reserved groove is provided with a bottom steel plate, the side wall of the reserved groove is provided with triangular steel, and the triangular steel is welded to the bottom steel plate.

6. The prefabricated T-beam to prefabricated box beam pedestal according to claim 5, characterized in that: A double-sided adhesive layer is provided between the triangular steel corresponding to the reserved groove set on the end head of the designated pedestal and the end head of the designated pedestal, and a double-sided adhesive layer is provided between the triangular steel corresponding to the reserved groove set on the end head of the first box girder pedestal and the end head of the first box girder pedestal.

7. A method for converting a prefabricated T-beam into a prefabricated box beam pedestal as claimed in claim 1, characterized in that: The method includes: Disposing a first box beam pedestal end at a first specified distance from a specified pedestal end in the original T beam pedestal; A groove having the same embedded depth as the transition foundation section in the original T-beam pedestal is excavated between the designated pedestal end and the first box beam pedestal end, and the groove is adjacent to the transition foundation section; pouring concrete in the groove so that the poured concrete forms a foundation widening portion on one side of the transition foundation section; A plurality of transition widening portions are sequentially arranged on the foundation widening portion, wherein one side of the transition widening portion is connected to the portion of the transition foundation section exposed to the ground, and the upper end of the transition widening portion is flush with the upper end of the transition foundation section.

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