Transverse reinforcing device for reinforced concrete T beam

Abstract

The utility model discloses a reinforced concrete T-beam transverse reinforcing device which is applied to a T-beam bridge, the T-beam bridge comprises N T-beams arranged at intervals, a concrete section connected between wing plates of any two T-beams and a transverse partition plate arranged between any two T-beams, and N is a positive integer larger than or equal to 2; the reinforced concrete T-beam transverse reinforcing device comprises concrete filled steel tube trusses arranged on the two sides of any transverse partition plate and connected with a T-beam; the unbonded prestressed steel strand penetrates through the concrete filled steel tube truss in the direction perpendicular to the rib plates of the T beams and penetrates through the rib plates, and the two ends of the unbonded prestressed steel strand are fixed to the outer sides of the rib plates of the two T beams on the outermost side respectively. The concrete filled steel tube trusses and the unbonded prestressed steel strands are matched, so that the transverse reinforcement of the T-shaped beam is realized, and the problem that a single beam of the T-shaped beam is stressed is avoided; the effect of reinforcing the structure of the diaphragm plate of the T-shaped beam can be achieved in the open-traffic state, and high economic and social benefits are achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of building construction more particularly, relate to a reinforced concrete T beam transverse reinforcing device. BACKGROUND

[0002] At present, the reinforced concrete T beam bridge that has been put into use for many years, its transverse connection mode usually has two kinds, the first kind is to adopt the steel sheet welding, the second kind is connected through the post-poured concrete wet joint, however, the steel plate of the first kind is easy to open the welding, the second kind is easy to tear at the new and old concrete joint, therefore, after using for many years, under the vertical cumulative load effect, the transverse connection stiffness of the two kinds of transverse connection mode will appear the continuous reduction until failure, forms the single beam stress condition, in order to avoid this situation, need reinforcing the T beam.

[0003] In the related art, the method for reinforcing the T beam is: removing the bridge deck pavement, chiseling part of the T beam flange plate and the transverse web plate concrete, and pouring new concrete to form a whole.

[0004] However, this reinforcing method needs to close the traffic, in the road with heavy traffic, the construction difficulty is extremely great, if it is a toll road, it will cause greater economic loss.

[0005] Therefore, how to reinforce the T beam without closing the traffic is a problem to be solved by the technical personnel in the field. UTILITY MODEL CONTENTS

[0006] Therefore, the utility model aims at providing a reinforced concrete T beam transverse reinforcing device, which can reinforce the T beam without closing the traffic.

[0007] In order to achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0008] A reinforced concrete T beam transverse reinforcing device is applied to a T beam bridge, the T beam bridge comprises N T beams arranged at intervals, a concrete section connected between the flanges of any two T beams, and a transverse web plate arranged between any two T beams, N is a positive integer greater than or equal to 2, and the reinforced concrete T beam transverse reinforcing device comprises:

[0009] A steel pipe concrete truss is arranged on both sides of any one transverse web plate and connected with the T beam;

[0010] A non-bonded prestressed steel strand is arranged in the steel pipe concrete truss in a direction perpendicular to the rib plate of the T beam and penetrates through the rib plate, and the two ends of the non-bonded prestressed steel strand are fixed to the outer sides of the rib plates of the two outermost T beams.

[0011] Optionally, the steel pipe concrete truss comprises:

[0012] upper chord, arranged between two adjacent rib plates and close to the top end of the diaphragm plate;

[0013] lower chord, arranged at the bottom of the rib plates and extending in a direction perpendicular to the rib plates and covering the bottom of N rib plates;

[0014] diagonal web member, connected between the upper chord and the lower chord.

[0015] Optionally, the two ends of the upper chord abut against the corresponding rib plates and are anchored to the rib plates by first bolts passing through the rib plates.

[0016] Optionally, at the intersection of the diagonal web member and the upper chord, a first short steel pipe is connected by a first anchor bolt, and the end of the first short steel pipe away from the first anchor bolt abuts against the bottom of the concrete segment.

[0017] Optionally, the two ends of the diagonal web member are welded to the upper chord and the lower chord respectively, and the middle position of the diagonal web member is connected to the diaphragm plate by a second bolt.

[0018] Optionally, two diagonal web members are connected between each upper chord and lower chord, the top ends of the two diagonal web members are relatively arranged on the upper chord, and the bottom ends of the two diagonal web members have a spacing, so that the two diagonal web members form a herringbone shape.

[0019] Optionally, the lower chord, the diagonal web member, and the rib plate intersect at a point, and further comprising a steel plate stiffener welded to the lower chord and the diagonal web member respectively, the steel plate stiffener is close to the intersection of the lower chord, the diagonal web member, and the rib plate, and the steel plate stiffener is anchored to the rib plate by a third bolt passing through the rib plate.

[0020] Optionally, the lower chords on both sides of the same diaphragm plate are connected by a second short steel pipe.

[0021] Optionally, the corresponding and oppositely arranged upper chords between different diaphragm plates between the same two T-beams are connected by a first longitudinal steel pipe, the first longitudinal steel pipe abuts against the side of the rib plate and is fixed by a second anchor bolt.

[0022] The corresponding and oppositely arranged lower chords between different diaphragm plates between the same two T-beams are connected by a second longitudinal steel pipe, the second longitudinal steel pipe abuts against the bottom of the rib plate and is fixed by a third anchor bolt.

[0023] Optionally, the unbonded prestressed steel strand comprises:

[0024] The first unbonded prestressed steel strand is arranged in the interior of the upper chord and penetrates through the N rib plates, and two ends thereof are fixed to the outside of the outermost rib plate respectively;

[0025] The second unbonded prestressed steel strand is arranged in the interior of the lower chord, and two ends thereof are fixed to the outside of the outermost rib plate respectively.

[0026] The steel reinforced concrete T beam transverse reinforcement device has the following beneficial effects:

[0027] The steel pipe concrete truss and the unbonded prestressed steel strand are matched to reinforce the T beam in the transverse direction. It can be understood that the steel pipe concrete trusses are arranged on the two sides of the diaphragm plate, and the steel pipe concrete trusses are connected with the T beam, the transverse rigidity at the diaphragm plate is improved by using the steel pipe concrete trusses on the two sides of the diaphragm plate, and the existing diaphragm plate is structurally reinforced. In addition, since the two ends of the unbonded prestressed steel strand are connected with the outside of the rib plates of the two outermost T beams, the unbonded prestressed steel strand can be used to make the steel pipe concrete truss, the existing T beam and the diaphragm plate bear stress together, and the rigidity is provided in advance, the transverse reinforcement effect is further improved, and the problem of single beam stress of the T beam is avoided. Moreover, during construction, only the steel pipe concrete truss needs to be connected with the existing T beam, and the two ends of the unbonded prestressed steel strand need to be connected with the outside of the rib plates of the two outermost T beams, and the construction can be carried out below the T beam bridge, which does not affect the traffic condition, that is, the traffic does not need to be closed, and the effect of structurally reinforcing the diaphragm plate of the T beam can be achieved under the traffic condition, which has high economic and social benefits. Moreover, the applicability of the scheme is strong, and the scheme can be applied to the reinforcement of various steel reinforced concrete T beams with a span of less than 20 meters. In addition, compared with the related art, the scheme avoids the problem of large age difference between the newly poured concrete and the existing concrete, and solves the problem of poor combination between the new structure and the existing structure in the existing T beam transverse reinforcement scheme. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or related art, the drawings needed to be used in the embodiment or related art description will be briefly introduced. Obviously, the drawings in the following description are only embodiments of the utility model, and those skilled in the art can obtain other drawings according to the provided drawings without creating creative labor.

[0029] Figure 1 The structure diagram of the steel reinforced concrete T beam transverse reinforcement device provided by the embodiment of the utility model is shown in the drawings.

[0030] Figure 2 For Figure 1Structure diagram of another view after hiding concrete section 2 and several T-beams;

[0031] Figure 3 For Figure 2 Partial enlarged diagram of A in the middle;

[0032] Figure 4 For Figure 1 Cross-sectional diagram of the transverse reinforcement device of the reinforced concrete T-beam shown in the figure;

[0033] Figure 5 For Figure 4 Partial enlarged diagram of B in the middle.

[0034] Reference signs:

[0035] 1-T beam; 11-wing plate; 12-rib plate; 2-concrete section; 3-transverse partition plate; 4-steel pipe concrete truss; 41-upper chord; 411-first bolt; 412-first anchor bolt; 42-lower chord; 43-inclined web member; 431-second bolt; 5-unbonded prestressed steel strand; 51-first unbonded prestressed steel strand; 52-second unbonded prestressed steel strand; 6-first short steel pipe; 7-steel plate stiffening rib; 71-third bolt anchor; 8-second short steel pipe; 9-first longitudinal steel pipe; 91-second anchor bolt; 10-second longitudinal steel pipe. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0037] The core of the utility model is to provide a kind of reinforced concrete T-beam transverse reinforcement device, can realize the reinforcement of T-beam without closing traffic.

[0038] Please refer to Figures 1 to 5The utility model discloses a reinforced concrete T beam transverse reinforcing device, be applied to T beam bridge, T beam bridge includes N interval arrangement's T beam 1, the concrete section 2 of connecting in the wing plate 11 between any two T beam 1 and the transverse baffle 3 of being located between any two T beam 1, and N is the positive integer of ≥2;Reinforced concrete T beam transverse reinforcing device includes steel pipe concrete truss 4 and unbonded prestressed steel strand 5, steel pipe concrete truss 4 is located at both sides of any one transverse baffle 3, and is connected with T beam 1;Unbonded prestressed steel strand 5 is penetrated in steel pipe concrete truss 4 along the direction perpendicular to the rib plate 12 of T beam 1, and is penetrated rib plate 12, and the both ends of unbonded prestressed steel strand 5 are fixed on the outside of the rib plate 12 of the two T beam 1 of the outer side of the most outside respectively.

[0039] That is, the utility model discloses steel pipe concrete truss 4 and unbonded prestressed steel strand 5 cooperate, realize the transverse of T beam 1 and reinforce. It can be understood that steel pipe concrete truss 4 is arranged on both sides of transverse baffle 3 respectively, and steel pipe concrete truss 4 is connected with T beam 1, utilizes the steel pipe concrete truss 4 of both sides of transverse baffle 3 to promote the lateral stiffness at transverse baffle 3, realizes the structural reinforcement of existing transverse baffle 3;In addition, since the both ends of unbonded prestressed steel strand 5 are connected with the outside of the rib plate 12 of the two T beam 1 of the most outside respectively, therefore, can utilize the prestress of unbonded prestressed steel strand 5 to make steel pipe concrete truss 4 and the T beam 1 and transverse baffle 3 of existing structure bear force together, and provide stiffness in advance, further promote the effect of transverse reinforcement, avoid the problem of single beam stress of T beam 1. Moreover, during construction, only need to make steel pipe concrete truss 4 connect with the T beam 1 of existing structure, and make the both ends of unbonded prestressed steel strand 5 connect with the outside of the rib plate 12 of the two T beam 1 of the most outside respectively, which can be carried out below the T beam bridge, without affecting the traffic condition, that is, without closing traffic, under the traffic condition, the effect of structural reinforcement of transverse baffle 3 of T beam 1 can be achieved, which has high economic and social benefits. Moreover, the applicability of the scheme is strong, and can be applied to reinforced concrete T beam 1 reinforcement of various spans below 20 meters. In addition, compared with the related art, the scheme avoids the problem of huge age difference between newly poured concrete and existing concrete, and therefore solves the problem of poor combination between new and old structures in the existing T beam 1 transverse reinforcement scheme.

[0040] It should be noted that the specific structure of steel pipe concrete truss 4 is not limited in the embodiment, as long as it can play a role in reinforcing the structural strength of transverse baffle 3.

[0041] In some embodiments, the steel tube concrete truss 4 comprises upper chords 41, lower chords 42 and diagonal web members 43, the upper chords 41 are arranged near the top ends of the cross partitions 3 and between any two adjacent rib plates 12, the lower chords 42 are arranged at the bottom of the rib plates 12 and extend in a direction perpendicular to the rib plates 12 and cover the bottom of N rib plates 12, and the diagonal web members 43 are connected between the upper chords 41 and the lower chords 42.

[0042] That is, in the present embodiment, the number of the upper chords 41 is at least one, the upper chords 41 are arranged between any two adjacent rib plates 12 of the T-beams 1, the lower chords 42 belong to one continuous chord and are an integral structure, the diagonal web members 43 are connected between the upper chords 41 and the lower chords 42 to strengthen the structural strength, and the structure is simple and convenient to realize.

[0043] It should be noted that the present embodiment does not limit the connection mode of the upper chords 41 and the T-beams 1, and in order to improve the reliability of the connection, in some embodiments, the two ends of the upper chords 41 are respectively abutted against the corresponding rib plates 12 and are anchored to the rib plates 12 through the first bolts 411 penetrating the rib plates 12.

[0044] That is, in the present embodiment, the two ends of the upper chords 41 are not only abutted against the corresponding two rib plates 12, but also are anchored to the rib plates 12 to realize the connection of the upper chords 41 and the rib plates 12, that is, the upper chords 41 are fixed to the rib plates 12 of the existing structure of the T-beams 1, which is beneficial to realize the overall stress of the upper chords 41 and the T-beams 1 and improve the reliability of the fixation of the upper chords 41.

[0045] In addition, in order to further improve the reliability of the fixation of the upper chords 41, in some embodiments, at the intersection of the diagonal web members 43 and the upper chords 41, the first short steel tubes 6 are connected through the first anchor bolts 412, and the ends of the first short steel tubes 6 away from the first anchor bolts 412 abut against the bottom of the concrete sections 2.

[0046] That is, in the present embodiment, the first short steel tubes 6 are used at the intersection of the diagonal web members 43 and the upper chords 41 to realize the abutment of the concrete sections 2 between the intersection of the diagonal web members 43 and the upper chords 41 and the wing plates 11 of the T-beams 1, so that the fixation of the upper chords 41 is more stable. Moreover, it can be understood that the more connection points of the upper chords 41 and the existing structure, the better the overall stress.

[0047] In addition, in some embodiments, the two ends of the diagonal web members 43 are respectively welded to the upper chords 41 and the lower chords 42, and the middle position of the diagonal web members 43 is connected to the cross partitions 3 through the second bolts 431.

[0048] That is, the embodiment adds a constraint point in the middle position of the diagonal web member 43, so that the diagonal web member 43 is connected with the cross diaphragm 3 together and bears force with the cross diaphragm 3, thereby further improving the connection reliability of the concrete-filled steel tubular truss 4 and the existing structure and improving the stability of the concrete-filled steel tubular truss 4.

[0049] Further, in some embodiments, two diagonal web members 43 are connected between each upper chord 41 and lower chord 42, the top ends of the two diagonal web members 43 are located at one position of the upper chord 41, and the bottom ends of the two diagonal web members 43 have a spacing, so that the two diagonal web members 43 form a herringbone shape.

[0050] That is, in the embodiment, the two diagonal web members 43 form a symmetrical structure between one upper chord 41 and lower chord 42, which can improve the structural strength of the concrete-filled steel tubular truss 4 while improving the uniformity of stress.

[0051] In addition, in order to improve the connection reliability of the lower chord 42 and the T beam 1, in some embodiments, the lower chord 42, the diagonal web member 43 and the rib plate 12 intersect at one position, and further comprising a steel plate stiffening rib 7 welded with the lower chord 42 and the diagonal web member 43 respectively, the steel plate stiffening rib 7 is close to the intersection position of the lower chord 42, the diagonal web member 43 and the rib plate 12, and the steel plate stiffening rib 7 is fixed to the rib plate 12 through a third bolt anchor 71 penetrating the rib plate 12.

[0052] That is, in the embodiment, the steel plate stiffening rib 7 is locally added near the intersection position of the lower chord 42 and the rib plate 12, and the steel plate stiffening rib 7 is fixedly connected with the rib plate 12 through the third bolt anchor 71, so as to realize the connection of the lower chord 42 and the rib plate 12, thereby improving the structural stability and the uniformity of stress.

[0053] In addition, in some embodiments, the lower chords 42 on both sides of the same cross diaphragm 3 are connected through the second short steel pipe 8.

[0054] That is, in the embodiment, the lower chords 42 on both sides of the same cross diaphragm 3 are connected together through the second short steel pipe 8, so that the concrete-filled steel tubular trusses 4 on both sides of the cross diaphragm 3 form a whole, which is conducive to improving the stability and the uniformity of stress of the whole structure.

[0055] In addition, in some embodiments, the corresponding and oppositely arranged upper chords 41 between different cross diaphragms 3 located between the same two T beams 1 are connected through the first longitudinal steel pipe 9, the first longitudinal steel pipe 9 abuts against the side of the rib plate 12 and is fixed through the second anchor bolt 91; the corresponding and oppositely arranged lower chords 42 between different cross diaphragms 3 located between the same two T beams 1 are connected through the second longitudinal steel pipe 10, the second longitudinal steel pipe 10 abuts against the bottom of the rib plate 12 and is fixed through the third anchor bolt.

[0056] That is, two steel pipe concrete trusses 4 between two adjacent transverse diaphragms 3 between the same two T-beams 1 are connected by the first longitudinal steel pipe 9 and the second longitudinal steel pipe 10 respectively, so that different steel pipe concrete trusses 4 are connected into a whole, forming a structure subjected to a whole force, which is beneficial to improve the longitudinal and lateral comprehensive rigidity of the whole reinforced area.

[0057] In addition, in some embodiments, the unbonded prestressed steel strand 5 includes a first unbonded prestressed steel strand 51 and a second unbonded prestressed steel strand 52, the first unbonded prestressed steel strand 51 is arranged inside the upper chord 41 and penetrates through the N rib plates 12, and the two ends thereof are fixed to the outside of the outermost rib plate 12 respectively; the second unbonded prestressed steel strand 52 is arranged inside the lower chord 42, and the two ends thereof are fixed to the outside of the outermost rib plate 12 respectively.

[0058] That is, the first unbonded prestressed steel strand 51 and the second unbonded prestressed steel strand 52 are arranged respectively, the first unbonded prestressed steel strand 51 is arranged in each upper chord 41, and the integrity of the first unbonded prestressed steel strand 51 is realized by penetrating the first unbonded prestressed steel strand 51 through the rib plate 12 of the T-beam 1, and the second unbonded prestressed steel strand 52 is arranged completely in the whole lower chord 42, so that the first unbonded prestressed steel strand 51 and the second unbonded prestressed steel strand 52 jointly act, so that the steel pipe concrete truss 4 and the T-beam 1 and the transverse diaphragm 3 of the existing structure jointly bear force more evenly, and the rigidity of the reinforced area is also improved.

[0059] It should be noted that the diameters and quantities of the first unbonded prestressed steel strand 51 and the second unbonded prestressed steel strand 52 are not limited in the embodiments. For example, in some embodiments, the first unbonded prestressed steel strand 51 and the second unbonded prestressed steel strand 52 are each a single φ15.2mm unbonded prestressed steel strand 5.

[0060] In addition, in some embodiments, the first bolt 411, the second bolt 431, the third bolt, the first anchor bolt 412, the second anchor bolt 91 and the third anchor bolt are all pre-tensioned high-strength bolts.

[0061] It should be further noted that the relative terms, such as first and second, in the present specification are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or sequence between the entities or operations.

[0062] The embodiments in the present specification are described in a progressive manner, and each embodiment focuses on the difference from other embodiments, and the same or similar parts between the embodiments can be referred to each other.

[0063] The above has carried out the detailed introduction to the steel reinforced concrete T beam transverse reinforcing device provided by the utility model. The principle and implementation mode of the utility model are described by applying specific examples in this paper, and the above embodiment description is only used for helping to understand the method and core idea of the utility model. It should be pointed out that, for ordinary skilled person in the art, without departing from the principle of the utility model, the utility model can be improved and modified in several ways, and these improvements and modifications also fall within the protection scope of the utility model.

Claims

1. A device for laterally reinforcing a reinforced concrete T-beam, characterized in that The application is applied to a T beam bridge, the T beam bridge comprises N T beams (1) arranged at intervals, a concrete section (2) connected between the wing plates (11) of any two T beams (1), and a cross partition plate (3) arranged between any two T beams (1), wherein N is a positive integer greater than or equal to 2; the steel reinforced concrete T beam lateral reinforcing device comprises: a concrete-filled steel tube truss (4) arranged on both sides of any one cross partition plate (3) and connected with the T beam (1); unbonded prestressed steel strands (5) penetrating through the concrete-filled steel tube truss (4) in a direction perpendicular to the rib plate (12) of the T beam (1) and penetrating through the rib plate (12), and the two ends of the unbonded prestressed steel strands (5) are fixed to the outside of the rib plate (12) of the outermost two T beams (1).

2. The reinforced concrete T-beam lateral strengthening device according to claim 1, characterized in that, The concrete-filled steel tube truss (4) comprises: upper chords (41) close to the top end of the cross partition plate (3) and arranged between adjacent two rib plates (12); lower chords (42) arranged at the bottom of the rib plate (12) and extending in a direction perpendicular to the rib plate (12) and covering the bottom of N rib plates (12); inclined web members (43) connected between the upper chords (41) and the lower chords (42).

3. The reinforced concrete T-beam lateral strengthening device according to claim 2, characterized in that, The two ends of the upper chord (41) are respectively in abutment with the corresponding rib plate (12) and are anchored to the rib plate (12) through the first bolt (411) penetrating through the rib plate (12).

4. The reinforced concrete T-beam lateral strengthening device according to claim 2, wherein The intersection of the inclined web member (43) and the upper chord (41) is connected with a first short steel pipe (6) through a first anchor bolt (412), so that the end of the first short steel pipe (6) away from the first anchor bolt (412) abuts against the bottom of the concrete section (2).

5. The reinforced concrete T-beam lateral strengthening device according to claim 2, wherein, The two ends of the inclined web member (43) are respectively welded to the upper chord (41) and the lower chord (42), and the middle position of the inclined web member (43) is connected with the cross partition plate (3) through a second bolt (431).

6. The reinforced concrete T-beam lateral strengthening device according to claim 2, wherein Two inclined web members (43) are connected between each upper chord (41) and the lower chord (42), the top ends of the two inclined web members (43) intersect with the upper chord (41) at one point, and the bottom ends of the two inclined web members (43) have a spacing, so that the two inclined web members (43) form a herringbone shape.

7. A reinforced concrete T-beam lateral bracing device according to any one of claims 2-6, characterised in that, The lower chord (42), the inclined web member (43) and the rib plate (12) intersect at one point, and a steel plate stiffening rib (7) welded to the lower chord (42) and the inclined web member (43) is arranged close to the intersection of the lower chord (42), the inclined web member (43) and the rib plate (12), and the steel plate stiffening rib (7) is fixed to the rib plate (12) through a third bolt anchor (71) penetrating through the rib plate (12).

8. A reinforced concrete T-beam lateral bracing device according to any one of claims 2-6, characterised in that, The lower chords (42) on both sides of the same cross partition plate (3) are connected through a second short steel pipe (8).

9. The reinforced concrete T-beam lateral bracing device according to any one of claims 2-6, characterized in that, The first longitudinal steel pipe (9) is in abutment with the side of the rib plate (12) and is fixed by a second anchor bolt (91); The second longitudinal steel pipe (10) is in abutment with the bottom of the rib plate (12) and is fixed by a third anchor bolt.

10. The reinforced concrete T-beam lateral bracing device according to any one of claims 2-6, wherein, The non-bonded prestressed steel strand (5) comprises: A first non-bonded prestressed steel strand (51) is arranged in the interior of the upper chord (41) and penetrates through N rib plates (12), and the two ends thereof are respectively fixed to the outside of the outermost rib plate (12); A second non-bonded prestressed steel strand (52) is arranged in the interior of the lower chord (42), and the two ends thereof are respectively fixed to the outside of the outermost rib plate (12).

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