Hidden steel cover beam and hidden telescopic device combined structure

Abstract

The utility model relates to a combined structure of an implicit steel cover beam and an implicit telescopic device structure. The combined structure comprises an implicit cover beam (10), a main beam bracket (20), a support system (30), a limiting device (40) and an implicit telescopic device (50). The longitudinal bridge direction of the hidden cover beam (10) is consistent with the line shape of the main beam, the main beam is slotted to form two symmetrical main beam brackets (20), and the main beam brackets (20) are lapped on the hidden cover beam (10). And the main beam bracket (20) is limited by a limiting device (40). And the brackets are connected through hidden telescopic devices (50). The device is suitable for urban steel structure bridges, and effectively solves the problems that an existing bent cap is poor in attractiveness and economical efficiency, and an existing expansion joint structure is exposed on a bridge floor and poor in comfort.

Description

Technical Field

[0001] The utility model belongs to the technical field of a hidden steel cap beam and a hidden telescopic device combined structure, in particular to the technical field of a hidden steel cap beam and a hidden telescopic device combined structure. Background Art

[0002] The bridge needs to install bearings in the middle to reduce deflection and bending moment. In order to ensure that the bridge has enough space to place the bearings and limit the displacement of the bridge, a cap beam is usually made on the top of the pier. In order to ensure that the bridge has sufficient stability and does not roll over, the main beam needs to have a larger cross beam at the support to increase the transverse distance of the bearings. In this case, the cap beam size must also be made larger, such as Figure 6 .

[0003] However, with the continuous development and optimization of bridge structures, the weight of bridges has been reduced, and this method of increasing stability by increasing the size of the structure has become increasingly cumbersome. At the same time, as engineers continue to explore, they invented seamless expansion joints to solve the problem of a large expansion joint exposed at the bridge head. However, the existing seamless expansion joint structure exposes the expansion material on the bridge deck. After long-term load and weathering, the expansion performance of the material decreases, which will inevitably affect the durability and safety of the bridge.

[0004] The existing technology makes a larger crossbeam on the main beam and a larger crossbeam on the pier top to install the support, which has the following problems:

[0005] 1. The cap beam cross bridge extends outward too much, destroying the continuity of the steel box beam, resulting in an unsightly appearance and not meeting aesthetic requirements;

[0006] 2. The cap beam, cross beam and limit block use a large amount of steel, which reduces the economic efficiency of the bridge. At the same time, the heavy deadweight will further increase the investment in piers and pile foundations.

[0007] 3. When the seamless expansion joint is exposed on the bridge deck, it is subjected to load and weathering, and the elasticity of the expansion material decreases, which easily leads to the failure of the expansion joint. Moreover, the exposed expansion joint will also reduce the comfort of driving and pedestrians. Summary of the invention

[0008] The utility model is to solve the above problems and defects, and provides a hidden steel cap beam and hidden expansion device structure and construction method, so as to solve the problems of poor economy, inconvenient construction, poor aesthetics, etc. of the traditional cap beam and the problem of seamless expansion joints exposed on the bridge deck.

[0009] The utility model is implemented by the following technical solution.

[0010] A combination structure of an implicit steel cap beam and an implicit telescopic device, including a pier column; the combination structure of the utility model includes an implicit cap beam 10, a main beam corbel 20, a support system 30, a limit device 40, and an implicit telescopic device 50;

[0011] The hidden cap beam 10 is fixedly arranged on the top of the pier;

[0012] The main beam corbels 20 are symmetrically arranged adjacently on the upper part of the implicit cap beam 10; the adjacent main beam corbels 20 are the first span main beam corbel 20.1 and the second span main beam corbel 20.2;

[0013] The support system 30 is fixedly arranged between the hidden cap beam 10 and the main beam corbel 20; the support system 30 is arranged in at least two sets;

[0014] The limiting device 40 is fixedly arranged between the hidden cap beam 10 and the main beam corbel 20; the limiting device 40 is fixedly arranged between the two sets of support systems 30;

[0015] The first span main beam corbel 20.1 and the second span main beam corbel 20.2 are connected by an implicit telescopic device 50;

[0016] The hidden expansion device 50 is fixedly arranged at the expansion joint between the first span main beam corbel 20.1 and the second span main beam corbel 20.2;

[0017] The side surface of the implicit cap beam 10 and the side surface of the main beam corbel 20 are arranged in the same plane.

[0018] Furthermore, the side surfaces of the implicit cap beam 10 and the main beam corbel 20 of the utility model are both inclined.

[0019] Furthermore, the hidden telescopic device 50 of the utility model is composed of a T-shaped steel plate 51, an I-shaped steel plate 52, a telescopic body layer 53, a tube body 54, a sleeve 55, and a spring 56;

[0020] The T-shaped steel plate 51 is fixedly arranged at the bottom of the expansion joint;

[0021] The I-shaped steel plate 52 is fixedly arranged at the top of the expansion joint;

[0022] The telescopic body layer 53, the tube body 54, the sleeve 55, and the spring 56 are arranged between the T-shaped steel plate 51 and the I-shaped steel plate 52;

[0023] The sleeve 55 is fixedly arranged on the upper part of the T-shaped steel plate 51; one end of the sleeve 55 is in contact with and connected to the second span main beam bracket 20.2; a spring 56 is fixedly arranged in the sleeve 55;

[0024] The tube body 54 is inserted into the sleeve 55 and connected therewith; one end of the tube body 54 is in contact with the first span main beam bracket 20.1; the other end of the tube body 54 is in contact with the spring 56;

[0025] The tube body 54 and the sleeve 55 are arranged in the telescopic body layer 53 .

[0026] Furthermore, the telescopic body layer 53 of the present invention is an existing material having elasticity after curing, such as a polyurethane telescopic body.

[0027] Furthermore, the implicit cap beam 10 of the utility model includes a cap beam top plate 11, a cap beam bottom plate 12, a longitudinal bridge stiffening plate 13, a cap beam diagonal brace 14, a sealing plate A15, a transverse bridge stiffening plate 17, and a transverse bridge sealing plate 18;

[0028] The cap beam top plate 11, the cover plate A15, the cap beam diagonal brace 14, and the cap beam bottom plate 12 are fixedly connected to form the periphery;

[0029] The length of the cap beam top plate 11 is greater than the length of the cap beam bottom plate 12;

[0030] The upper ends of the longitudinal bridge stiffening plates 13 and the transverse bridge stiffening plates 17 are respectively fixedly connected to the cap beam top plate 11; the lower ends of the longitudinal bridge stiffening plates 13 and the transverse bridge stiffening plates 17 are respectively fixedly connected to the cap beam diagonal braces 14 or the cap beam bottom plate 12.

[0031] Furthermore, the implicit cap beam 10 of the utility model includes a pier column steel pipe 16; the pier column steel pipe 16 is arranged at the lower part of the cap beam bottom plate 12 and is fixedly connected to the cap beam bottom plate 12; the pier column steel pipe 16 is looped and fixedly connected to the outer side of the pier column.

[0032] Furthermore, the main beam corbel 20 of the utility model includes a main beam top plate 21, a main beam bottom plate 22, a main beam vertical beam 23, a corbel bottom plate 24, a stiffening plate 25, a fulcrum vertical beam 26, a sealing plate B27, an expansion joint stiffening plate 28, and a corbel diagonal brace 29;

[0033] The main beam top plate 21, the corbel brace 29, and the corbel bottom plate 24 are fixedly connected to form the periphery;

[0034] The length of the main beam top plate 21 is greater than the length of the corbel bottom plate 24;

[0035] The upper ends of the stiffening plates 25 and the fulcrum vertical beams 26 are respectively fixedly connected to the main beam top plate 21; the lower ends of the stiffening plates 25 and the fulcrum vertical beams 26 are respectively fixedly connected to the corbel bottom plate 24 or the corbel diagonal brace 29;

[0036] The expansion joint stiffening plate 28 is arranged parallel to the lower part of the main beam top plate 21, and the expansion joint stiffening plate 28 is fixedly connected to the stiffening plate 25 and the fulcrum vertical beam 26 respectively; a sealing plate B27 is fixedly arranged between the expansion joint stiffening plate 28 and the corbel bottom plate 24;

[0037] The main beam bottom plate 22 is arranged parallel to the lower part of the main beam top plate 21; the upper end of the main beam vertical beam 23 is fixedly connected to the main beam top plate 21; the lower end of the main beam vertical beam 23 is connected to the main beam bottom plate 22. The main beam bottom plate 22 and the cap beam bottom plate 12 are in the same plane.

[0038] Furthermore, the support system 30 of the utility model includes upper and lower leveling steel plates 31, a support 32, and a stainless steel plate 33;

[0039] The upper and lower leveling steel plates 31 include an upper leveling steel plate and a lower leveling steel plate;

[0040] From bottom to top, the lower leveling steel plate, the support 32, the stainless steel plate 33 and the upper leveling steel plate are fixedly connected in sequence;

[0041] The lower leveling steel plate is fixedly arranged on the upper part of the cap beam top plate 11;

[0042] The upper leveling steel plate is fixedly arranged at the lower part of the corbel bottom plate 24 .

[0043] Furthermore, the main beam corbel 20 and the implicit cap beam 10 of the utility model are simultaneously limited in the longitudinal and transverse directions of the bridge by a limiting device 40;

[0044] The limiting device 40 includes a rectangular groove 41, a baffle 42, a baffle stiffener 43, and a rubber pad 44;

[0045] The rectangular groove 41 is fixedly arranged on the upper part of the cap beam top plate 11;

[0046] The baffle plate 42 and the baffle plate reinforcement 43 are fixedly arranged at the lower part of the corbel bottom plate 24;

[0047] The baffle 42 is arranged outside the rectangular groove 41 and at a certain distance from the rectangular groove 41;

[0048] The baffle reinforcement 43 is vertically fixed at the rear side of the baffle 42;

[0049] A rubber pad 44 is fixedly mounted on a surface of the baffle plate 42 facing the rectangular groove 41 .

[0050] The construction method of the above-mentioned implicit steel cap beam and implicit telescopic device combined structure, the construction method described in the utility model comprises the following steps:

[0051] Step F1: Determine the cap beam line shape according to the main beam line shape, and ensure that the cap beam diagonal brace 14 and the main beam diagonal web and the corbel diagonal brace 29 are in the same plane;

[0052] Step F2: The implicit cap beam 10 is consolidated with the pier column steel pipe 16, and the stopper rectangular groove 41 is installed on the cap beam in advance;

[0053] Step F3: Sufficient space is left between the cap beam and the main beam corbel 20 to install the support system 30 and the limit device 40. A baffle 42 and a baffle stiffener 43 are installed at the bottom of the corbel at the center of the connection line of the support system 30. A rubber pad 44 is installed on the inner side of the baffle 42. A distance of the length of an expansion joint is left on the baffle 42 in the longitudinal direction of the bridge.

[0054] Step F4: Determine the thickness of each side of the upper and lower leveling steel plates 31 according to the longitudinal and transverse slopes of the bridge, and install the support 30 on the implicit cap beam 10;

[0055] Step F5: pre-install the tube body 54 on one main beam corbel 20, and install the sleeve 55 and the spring 56 on the other main beam corbel 20;

[0056] Step F6: welding the main beam top plate 21, the main beam top plate 21 and the main beam corbel 20 have the same length;

[0057] Step F7: symmetrically assemble the two main beam corbels 20. Before assembling, place the T-shaped steel plate 51 and the I-shaped steel plate 52. The longitudinal distance between the two main beam corbels 20 is one expansion joint distance. Place them on the implicit cap beam 10 and fill them with polyurethane expansion body.

[0058] The beneficial effects of the utility model are as follows: 1. The utility model realizes hiding the cap beam inside the main beam, which is economical, convenient and efficient in construction, and reduces the damage of rainwater to the cap beam;

[0059] 2. Hiding the expansion joint in the main beam can protect the expansion body layer and ensure the continuity of the bridge deck at the same time, greatly increasing the durability of the expansion body material and the driving comfort of the bridge deck;

[0060] 3. The implicit cap beam (10) and the implicit expansion device structure together constitute an implicit sub-joining mode of the bridge, which is structurally innovative;

[0061] 4. The cap beam and main beam have consistent lines, with smooth structure and good landscape effect.

[0062] The utility model is further explained below in conjunction with the accompanying drawings and specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0063] Figure 1 It is a cross-sectional view of the implicit cap beam (10) and the corbel of the utility model.

[0064] Figure 2This is a vertical view of the implicit cap beam (10), corbel, and implicit telescopic device of the utility model.

[0065] Figure 3 It is a top plan view of the cap beam of the utility model.

[0066] Figure 4 The utility model relates to a limiting device.

[0067] Figure 5 It is a structural diagram of the implicit telescopic device of the utility model.

[0068] Figure 6 It is a schematic diagram of the prior art structure.

[0069] The numbers in the figure are: 10—implicit cap beam, 11—cap beam top plate, 12—cap beam bottom plate, 13—longitudinal bridge stiffening plate, 14—cap beam diagonal brace, 15—cover plate A, 16—pier column steel pipe, 17—transverse bridge stiffening plate, 18—transverse bridge cover plate, 19—self-compacting concrete, 20—main beam corbel, 20.1—first span main beam corbel, and 20.2—second span main beam corbel, 21—main beam top plate, 22—main beam bottom plate, 23—main beam vertical beam, 24—corbel bottom plate, 25—main beam vertical beam, 26—main beam vertical beam, 27—main beam vertical beam, 28—main beam vertical beam, 29—main beam vertical beam, 30—main beam vertical beam, 31—main beam vertical beam, 32—main beam vertical beam, 33—main beam vertical beam, 34—main beam vertical beam, 35—main beam vertical beam, 36—main beam vertical beam, 37—main beam vertical beam, 38—main beam vertical beam, 39—main beam vertical beam, 40—main beam vertical beam, 41—main beam vertical beam, 42—main beam vertical beam, 43—main beam vertical beam, 44—main beam vertical beam, 45—main beam vertical beam, 46—main beam vertical beam, 47—main beam vertical beam, 48—main beam vertical beam, 49—main beam vertical beam, 50—main beam vertical beam, 51—main beam vertical beam, 52—main beam vertical beam, 53—main beam vertical beam, 54—main beam vertical beam, 55—main beam vertical beam, 56—main beam vertical beam, 57—main beam vertical beam, 58—main beam vertical beam, 59—main beam vertical beam, 60—main beam vertical beam, 61—main beam vertical 5—stiffening plate, 26—support vertical beam, 27—sealing plate B, 28—expansion joint stiffening plate, 29—corbel brace, 30—support system, 31—upper and lower leveling steel plates, 32—support, 33—stainless steel plate, 40—limiting device, 41—rectangular groove, 42—baffle, 43—baffle stiffening, 44—rubber pad, 50—implicit expansion device, 51—T-shaped steel plate, 52—I-shaped steel plate, 53—expansion body layer, 54—tube body, 55—sleeve, 56—spring. DETAILED DESCRIPTION

[0070] The following embodiments are only a part of the technical solution of the present utility model, and are not intended to limit the entire technical solution of the present utility model. The embodiments of the present utility model are provided to further explain and illustrate the details of the technical solution of the present utility model.

[0071] See Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 shown.

[0072] A combination structure of an implicit steel cap beam and an implicit telescopic device, including a pier column; the combination structure of the utility model includes an implicit cap beam 10, a main beam corbel 20, a support system 30, a limit device 40, and an implicit telescopic device 50;

[0073] The hidden cap beam 10 is fixedly arranged on the top of the pier;

[0074] The main beam corbels 20 are symmetrically arranged adjacently on the upper part of the implicit cap beam 10; the adjacent main beam corbels 20 are the first span main beam corbel 20.1 and the second span main beam corbel 20.2;

[0075] The support system 30 is fixedly arranged between the hidden cap beam 10 and the main beam corbel 20; the support system 30 is arranged in at least two sets;

[0076] The limiting device 40 is fixedly arranged between the hidden cap beam 10 and the main beam corbel 20; the limiting device 40 is fixedly arranged between the two sets of support systems 30;

[0077] The first span main beam corbel 20.1 and the second span main beam corbel 20.2 are connected by an implicit telescopic device 50;

[0078] The hidden expansion device 50 is fixedly arranged at the expansion joint between the first span main beam corbel 20.1 and the second span main beam corbel 20.2;

[0079] The side surface of the implicit cap beam 10 and the side surface of the main beam corbel 20 are arranged in the same plane.

[0080] Furthermore, the side surfaces of the implicit cap beam 10 and the main beam corbel 20 of the utility model are both inclined.

[0081] Furthermore, the hidden telescopic device 50 of the utility model is composed of a T-shaped steel plate 51, an I-shaped steel plate 52, a telescopic body layer 53, a tube body 54, a sleeve 55, and a spring 56;

[0082] The T-shaped steel plate 51 is fixedly arranged at the bottom of the expansion joint;

[0083] The I-shaped steel plate 52 is fixedly arranged at the top of the expansion joint;

[0084] The telescopic body layer 53, the tube body 54, the sleeve 55, and the spring 56 are arranged between the T-shaped steel plate 51 and the I-shaped steel plate 52;

[0085] The sleeve 55 is fixedly arranged on the upper part of the T-shaped steel plate 51; one end of the sleeve 55 is in contact with and connected to the second span main beam bracket 20.2; a spring 56 is fixedly arranged in the sleeve 55;

[0086] The tube body 54 is inserted into the sleeve 55 and connected therewith; one end of the tube body 54 is in contact with the first span main beam bracket 20.1; the other end of the tube body 54 is in contact with the spring 56;

[0087] The tube body 54 and the sleeve 55 are arranged in the telescopic body layer 53 .

[0088] Furthermore, the telescopic body layer 53 of the present invention is an existing material having elasticity after curing, such as a polyurethane telescopic body.

[0089] Furthermore, the implicit cap beam 10 of the utility model includes a cap beam top plate 11, a cap beam bottom plate 12, a longitudinal bridge stiffening plate 13, a cap beam diagonal brace 14, a sealing plate A15, a transverse bridge stiffening plate 17, and a transverse bridge sealing plate 18;

[0090] The cap beam top plate 11, the cover plate A15, the cap beam diagonal brace 14, and the cap beam bottom plate 12 are fixedly connected to form the periphery;

[0091] The length of the cap beam top plate 11 is greater than the length of the cap beam bottom plate 12;

[0092] The upper ends of the longitudinal bridge stiffening plates 13 and the transverse bridge stiffening plates 17 are respectively fixedly connected to the cap beam top plate 11; the lower ends of the longitudinal bridge stiffening plates 13 and the transverse bridge stiffening plates 17 are respectively fixedly connected to the cap beam diagonal braces 14 or the cap beam bottom plate 12.

[0093] Furthermore, the implicit cap beam 10 of the utility model includes a pier column steel pipe 16; the pier column steel pipe 16 is arranged at the lower part of the cap beam bottom plate 12 and is fixedly connected to the cap beam bottom plate 12; the pier column steel pipe 16 is looped and fixedly connected to the outer side of the pier column.

[0094] Furthermore, the main beam corbel 20 of the utility model includes a main beam top plate 21, a main beam bottom plate 22, a main beam vertical beam 23, a corbel bottom plate 24, a stiffening plate 25, a fulcrum vertical beam 26, a sealing plate B27, an expansion joint stiffening plate 28, and a corbel diagonal brace 29;

[0095] The main beam top plate 21, the corbel brace 29, and the corbel bottom plate 24 are fixedly connected to form the periphery;

[0096] The length of the main beam top plate 21 is greater than the length of the corbel bottom plate 24;

[0097] The upper ends of the stiffening plates 25 and the fulcrum vertical beams 26 are respectively fixedly connected to the main beam top plate 21; the lower ends of the stiffening plates 25 and the fulcrum vertical beams 26 are respectively fixedly connected to the corbel bottom plate 24 or the corbel diagonal brace 29;

[0098] The expansion joint stiffening plate 28 is arranged parallel to the lower part of the main beam top plate 21, and the expansion joint stiffening plate 28 is fixedly connected to the stiffening plate 25 and the fulcrum vertical beam 26 respectively; a sealing plate B27 is fixedly arranged between the expansion joint stiffening plate 28 and the corbel bottom plate 24;

[0099] The main beam bottom plate 22 is arranged parallel to the lower part of the main beam top plate 21; the upper end of the main beam vertical beam 23 is fixedly connected to the main beam top plate 21; the lower end of the main beam vertical beam 23 is connected to the main beam bottom plate 22. The main beam bottom plate 22 and the cap beam bottom plate 12 are in the same plane.

[0100] Furthermore, the support system 30 of the utility model includes upper and lower leveling steel plates 31, a support 32, and a stainless steel plate 33;

[0101] The upper and lower leveling steel plates 31 include an upper leveling steel plate and a lower leveling steel plate;

[0102] From bottom to top, the lower leveling steel plate, the support 32, the stainless steel plate 33 and the upper leveling steel plate are fixedly connected in sequence;

[0103] The lower leveling steel plate is fixedly arranged on the upper part of the cap beam top plate 11;

[0104] The upper leveling steel plate is fixedly arranged at the lower part of the corbel bottom plate 24 .

[0105] Furthermore, the main beam corbel 20 and the implicit cap beam 10 of the utility model are simultaneously limited in the longitudinal and transverse directions of the bridge by a limiting device 40;

[0106] The limiting device 40 includes a rectangular groove 41, a baffle 42, a baffle stiffener 43, and a rubber pad 44;

[0107] The rectangular groove 41 is fixedly arranged on the upper part of the cap beam top plate 11;

[0108] The baffle plate 42 and the baffle plate reinforcement 43 are fixedly arranged at the lower part of the corbel bottom plate 24;

[0109] The baffle 42 is arranged outside the rectangular groove 41 and at a certain distance from the rectangular groove 41;

[0110] The baffle reinforcement 43 is vertically fixed at the rear side of the baffle 42;

[0111] A rubber pad 44 is fixedly mounted on a surface of the baffle plate 42 facing the rectangular groove 41 .

[0112] The implicit steel cap beam and implicit telescopic device combined structure of the utility model can be completely mounted on the existing pier column due to the presence of the pier column steel pipe 16, or can be half mounted and then poured with self-compacting concrete to make it integrated with the existing pier column.

[0113] The construction method of the above-mentioned implicit steel cap beam and implicit telescopic device combined structure, the construction method described in the utility model comprises the following steps:

[0114] Step F1: Determine the cap beam line shape according to the main beam line shape, and ensure that the cap beam diagonal brace 14 and the main beam diagonal web and the corbel diagonal brace 29 are in the same plane;

[0115] Step F2: The implicit cap beam 10 is consolidated with the pier column steel pipe 16, and the stopper rectangular groove 41 is installed on the cap beam in advance;

[0116] Step F3: Sufficient space is left between the cap beam and the main beam corbel 20 to install the support system 30 and the limit device 40. A baffle 42 and a baffle stiffener 43 are installed at the bottom of the corbel at the center of the connection line of the support system 30. A rubber pad 44 is installed on the inner side of the baffle 42. A distance of the length of an expansion joint is left on the baffle 42 in the longitudinal direction of the bridge.

[0117] Step F4: Determine the thickness of each side of the upper and lower leveling steel plates 31 according to the longitudinal and transverse slopes of the bridge, and install the support 30 on the implicit cap beam 10;

[0118] Step F5: pre-install the tube body 54 on one main beam corbel 20, and install the sleeve 55 and the spring 56 on the other main beam corbel 20;

[0119] Step F6: welding the main beam top plate 21, the main beam top plate 21 and the main beam corbel 20 have the same length;

[0120] Step F7: symmetrically assemble the two main beam corbels 20. Before assembling, place the T-shaped steel plate 51 and the I-shaped steel plate 52. The longitudinal distance between the two main beam corbels 20 is one expansion joint distance. Place them on the implicit cap beam 10 and fill them with polyurethane expansion body.

[0121] The above is only a specific embodiment of the utility model, and the common knowledge such as the known specific structure and characteristics in the scheme is not described in detail here. It should be pointed out that for those skilled in the art, several deformations and improvements can be made without departing from the structure of the utility model, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A combination structure of an implicit steel cap beam and an implicit telescopic device, comprising a pier column; characterized in that: The combined structure comprises an implicit cap beam (10), a main beam corbel (20), a support system (30), a limiting device (40), and an implicit telescopic device (50); The hidden cap beam (10) is fixedly arranged on the top of the pier column; The main beam corbels (20) are adjacently and symmetrically arranged on the upper part of the implicit cap beam (10); the adjacent main beam corbels (20) are the first span main beam corbel (20.1) and the second span main beam corbel (20.2); The support system (30) is fixedly arranged between the hidden cap beam (10) and the main beam corbel (20); the support system (30) is arranged in at least two sets; The limiting device (40) is fixedly arranged between the hidden cap beam (10) and the main beam corbel (20); The first span main beam corbel (20.1) and the second span main beam corbel (20.2) are connected via an implicit telescopic device (50); The hidden expansion device (50) is fixedly arranged at the expansion joint between the first span main beam corbel (20.1) and the second span main beam corbel (20.2); The side surface of the implicit cap beam (10) and the side surface of the main beam corbel (20) are arranged in the same plane.

2. The combination structure of a hidden steel cap beam and a hidden telescopic device according to claim 1 is characterized in that: The side surfaces of the implicit cap beam (10) and the main beam corbel (20) are both inclined.

3. The combination structure of a hidden steel cap beam and a hidden telescopic device according to claim 1 is characterized in that: The hidden telescopic device (50) is composed of a T-shaped steel plate (51), an I-shaped steel plate (52), a telescopic body layer (53), a tube body (54), a sleeve (55), and a spring (56); The T-shaped steel plate (51) is fixedly arranged at the bottom of the expansion joint; The I-shaped steel plate (52) is fixedly arranged at the top of the expansion joint; The telescopic body layer (53), the tube body (54), the sleeve (55), and the spring (56) are arranged between the T-shaped steel plate (51) and the I-shaped steel plate (52); The sleeve (55) is fixedly arranged on the upper part of the T-shaped steel plate (51); one end of the sleeve (55) is in contact with and connected to the second span main beam bracket (20.2); a spring (56) is fixedly arranged in the sleeve (55); The tube body (54) is inserted into the sleeve (55) and connected thereto; one end of the tube body (54) is in contact with and connected to the first span main beam bracket (20.1); the other end of the tube body (54) is in contact with and connected to the spring (56); The tube body (54) and the sleeve (55) are arranged inside the telescopic body layer (53).

4. The combination structure of a hidden steel cap beam and a hidden telescopic device according to claim 3 is characterized in that: The telescopic body layer (53) is a polyurethane telescopic body.

5. The combined structure of a hidden steel cap beam and a hidden telescopic device according to claim 1 is characterized in that: The implicit cap beam (10) comprises a cap beam top plate (11), a cap beam bottom plate (12), a longitudinal bridge stiffening plate (13), a cap beam diagonal brace (14), a cover plate A (15), a transverse bridge stiffening plate (17), and a transverse bridge cover plate (18); The cap beam top plate (11), the cover plate A (15), the cap beam diagonal brace (14), and the cap beam bottom plate (12) are fixedly connected to form an outer periphery; The length of the cap beam top plate (11) is greater than the length of the cap beam bottom plate (12); The upper ends of the longitudinal bridge stiffening plates (13) and the transverse bridge stiffening plates (17) are respectively fixedly connected to the cap beam top plate (11); the lower ends of the longitudinal bridge stiffening plates (13) and the transverse bridge stiffening plates (17) are respectively fixedly connected to the cap beam diagonal braces (14) or the cap beam bottom plate (12).

6. The combination structure of a hidden steel cap beam and a hidden telescopic device according to claim 5 is characterized in that: The implicit cap beam (10) comprises a pier column steel pipe (16); the pier column steel pipe (16) is arranged at the lower part of the cap beam bottom plate (12) and is fixedly connected to the cap beam bottom plate (12); the pier column steel pipe (16) is sleeved and fixedly connected to the outer side of the pier column.

7. The combined structure of a hidden steel cap beam and a hidden telescopic device according to claim 1 is characterized in that: The main beam bracket (20) comprises a main beam top plate (21), a main beam bottom plate (22), a main beam vertical beam (23), a bracket bottom plate (24), a stiffening plate (25), a fulcrum vertical beam (26), a sealing plate B (27), an expansion joint stiffening plate (28), and a bracket diagonal brace (29); The main beam top plate (21), the corbel brace (29), and the corbel bottom plate (24) are fixedly connected to form an outer periphery; The length of the main beam top plate (21) is greater than the length of the corbel bottom plate (24); The upper ends of the stiffening plate (25) and the fulcrum vertical beam (26) are respectively fixedly connected to the main beam top plate (21); the lower ends of the stiffening plate (25) and the fulcrum vertical beam (26) are respectively fixedly connected to the corbel bottom plate (24) or the corbel diagonal brace (29); The expansion joint stiffening plate (28) is arranged in parallel at the lower part of the main beam top plate (21), and the expansion joint stiffening plate (28) is fixedly connected to the stiffening plate (25) and the fulcrum vertical beam (26) respectively; a sealing plate B (27) is fixedly arranged between the expansion joint stiffening plate (28) and the corbel bottom plate (24); The main beam bottom plate (22) is arranged in parallel at the lower part of the main beam top plate (21); the upper end of the main beam vertical beam (23) is fixedly connected to the main beam top plate (21); and the lower end of the main beam vertical beam (23) is connected to the main beam bottom plate (22).

8. The combination structure of a hidden steel cap beam and a hidden telescopic device according to claim 7 is characterized in that: The support system (30) comprises upper and lower leveling steel plates (31), a support (32), and a stainless steel plate (33); The upper and lower leveling steel plates (31) comprise an upper leveling steel plate and a lower leveling steel plate; From bottom to top, the lower leveling steel plate, the support (32), the stainless steel plate (33) and the upper leveling steel plate are fixedly connected in sequence; The lower leveling steel plate is fixedly arranged on the upper part of the cap beam top plate (11); The upper leveling steel plate is fixedly arranged at the lower part of the corbel bottom plate (24).

9. The combination structure of a hidden steel cap beam and a hidden telescopic device according to claim 1 is characterized in that: The limiting device (40) comprises a rectangular groove (41), a baffle (42), a baffle reinforcement (43), and a rubber pad (44); The rectangular groove (41) is fixedly arranged on the upper part of the cap beam top plate (11); The baffle plate (42) and the baffle plate reinforcement (43) are fixedly arranged at the lower part of the corbel bottom plate (24); The baffle (42) is arranged outside the rectangular groove (41) and is at a certain distance from the rectangular groove (41); The baffle plate stiffener (43) is vertically fixedly arranged at the rear side of the baffle plate (42); A rubber pad (44) is fixedly arranged on a surface of the baffle (42) facing the rectangular groove (41).

10. The combination structure of a hidden steel cap beam and a hidden telescopic device according to claim 1, characterized in that: The limiting device (40) is fixedly arranged between the two sets of support systems (30).

Images