CN103741597B - Expansion joint device and installation method of concrete bridge without transition section - Google Patents

Abstract

An expansion joint device for a concrete bridge without a transition section and its installation method, comprising a first beam body, a second beam body, and a telescopic member respectively arranged on both sides of the bridge expansion joint, characterized in that the beam end of the first beam body The beam ends of the second beam and the second beam body reserve a groove area for installing telescopic components, pre-embedded steel bars are respectively preset on the upper surfaces of each beam end, and the telescopic components are fixed on the pre-embedded steel bars. The advantages of the present invention are: 1. Since the concrete structure of the transition section is cancelled, the phenomenon of damage to the expansion joint device is effectively avoided, the structural safety is greatly improved, and the operating cost is reduced; 2. The construction can be carried out in advance without being affected by the maintenance period, which is beneficial to the construction period and quality assurance ;3. When the expansion joint device is damaged and repaired, only the expansion member and water-stop member need to be replaced and reinstalled, and the bridge deck only needs to be partially repaired. The maintenance is convenient and the construction period is short. , The height of the expansion joint device can be adjusted according to the thickness of the pavement layer of the bridge deck, which is very flexible to use.

Description

Expansion joint device and installation method of concrete bridge without transition section

technical field

The invention relates to a bridge expansion joint device, in particular to a concrete bridge expansion joint device without a transition section and an installation method thereof.

Background technique

In order to meet the needs of bridge girder deformation, bridge expansion joint devices are generally installed between the two girder ends of the bridge, between the girder end and the abutment, or at the hinged position of the bridge. In the existing bridge expansion joint device, as shown in Figure 6 and Figure 7, when the beam body 1a is manufactured, a notch for the installation of the expansion device 2a is reserved at the end of the beam body, and the slot is pre-embedded in the reserved groove. When the steel bar 3a and the telescopic device 2a are installed on site, firstly, when paving the bridge deck pavement layer 5a, the installation notch of the telescopic device is completely covered, and then the installation notch is cut, excavated and cleaned according to the installation width of the telescopic device, and the telescopic The device 2a is fixed with the pre-embedded steel bar 3a, and finally the transition section concrete 4a is poured in the reserved groove and the concrete is cured, and the concrete can only be opened to traffic after the curing is completed.

The above-mentioned existing bridge expansion joint device has the following defects: first, the installation of the expansion device is the last process, and the concrete needs to be poured on site, and the construction and maintenance of the concrete are all restricted by climate and construction period factors. Therefore, the structure of the concrete in the transition section of the expansion joint has become a serious problem affecting the progress and quality of the expansion joint device and even the entire bridge project; second, there are many construction procedures, and the labor cost and construction cost are high; third, due to the bridge deck and The rigidity of concrete is different. The bridge deck is flexible, while the concrete is rigid. Therefore, after the expansion joint device is used for a long time, it is easy to cause the bridge deck to sag. Once the bridge deck is sunken, it is easy to break the concrete and damage the expansion joint. device, thereby reducing the ride comfort and comfort of vehicles passing through bridge expansion joints, and even affecting driving safety. Concrete damage in the transition section on both sides is the most important cause of damage to existing bridge expansion devices, especially for unitary multi-directional displacement comb-shaped plate bridge expansion devices with reasonable structure and reliable performance, more than 90% of the damage is caused by it; the fourth , once the expansion joint device is damaged, it is necessary to smash and clean the entire concrete layer during repair, and re-install the expansion device, concrete construction and maintenance of the bridge deck, thus wasting more manpower, material and financial resources; Fifth, The installation depth of the telescopic device is relatively high, and the installation operation cannot be carried out within the thickness of the bridge deck pavement. It is necessary to reserve corresponding installation notches at the end of the beam body, which increases the construction difficulty and production cost of the beam body. To sum up, the existing bridge expansion joint device needs to be improved, and correspondingly, the installation method of the existing bridge expansion joint device also needs to be further improved.

Contents of the invention

The technical problem to be solved by the present invention is to provide a non-transition concrete bridge expansion joint device and its installation method with no concrete transition section on both sides during installation, low damage rate and convenient maintenance, aiming at the above-mentioned current state of the art.

The technical solution adopted by the present invention to solve the above-mentioned technical problems is: the expansion joint device of the concrete bridge without transition section, including the first beam body, the second beam body and the telescopic member respectively arranged on both sides of the bridge expansion joint, characterized in that: At the beam end of the first beam body and the beam end of the second beam body, a telescopic member installation groove area is reserved, and pre-embedded steel bars are respectively preset on the upper surface of each beam end, and the telescopic member is fixed on pre-embedded reinforcement.

Preferably, a bridge deck pavement is laid on the outer side of the telescopic member, and the upper surface of the bridge deck pavement is flush with the upper surface of the telescopic member. After the telescopic member is installed and fixed, it directly extends to both sides of the bridge deck pavement when laying it. The bridge deck pavement can be made of various pavement materials, such as asphalt, concrete and epoxy resin.

As a preferred solution of the telescopic member, the telescopic member includes comb-toothed plates intersecting with each other, and an anti-collision baffle is respectively provided on the outside of the comb-toothed plates, and the anti-collision baffle is connected by connecting steel bars. It is welded and fixed with the pre-embedded steel bars on the same side, the bridge deck pavement is laid on the outside of the anti-collision baffle, and the upper surface of the comb plate and the anti-collision baffle is in contact with the bridge deck pavement. The upper surface is flush with each other. The anti-collision baffle can be made of steel plate, and can be adjusted in height according to the actual installation size requirements.

Further preferably, the comb plate includes a fixed comb plate and a movable comb plate straddling the expansion joint, the first end of the fixed comb plate and the first end of the movable comb plate are intersected and spaced apart, and the second end of the fixed comb plate The two ends and the second end of the movable comb are respectively welded and fixed to the pre-embedded steel bars on the corresponding sides through anchor bolts.

Even more preferably, the second end of the movable comb is welded and fixed to the pre-embedded steel bar on the corresponding side through a rotating structure that undergoes angular displacement with the beam body. The second end of the movable comb is designed as a rotatable structure, so that when the beam body is deflected and deformed, and the beam end is upturned or sunk, the movable comb and the beam will rotate, so that the movable comb can maintain a flat posture , to avoid damage to the entire expansion joint device and ensure smooth and safe passage of vehicles.

In order to further strengthen the telescopic components, the installation grooves of the telescopic components located on the inside and outside of the anti-collision baffle are poured with a filling layer, and the filling layer inside the anti-collision baffle is arranged on the comb plate and the end of the same-side beam Between the upper surface of the anti-collision baffle, the bridge deck pavement layer close to the anti-collision baffle is laid on the filling layer located outside the anti-collision baffle. The filling layer can be asphalt or other types of concrete filling layer, and a stainless steel plate and a buffer rubber plate can be arranged sequentially from top to bottom between the bottom of the comb plate and the filling layer.

As another preferred solution of the telescopic member, the telescopic member includes telescopic bodies arranged on both sides of the expansion joint, the upper surface of the telescopic body is flush with the upper surface of the bridge deck pavement, and the telescopic body passes through The anchor steel plate and the anchor steel bar are welded and fixed to the pre-embedded steel bar on the same side, and a filling layer is poured in the installation groove area of the expansion member, and the bridge deck pavement layer close to the expansion body is laid on the filling layer.

The telescopic body can have various structures. Preferably, the telescopic body is a special-shaped profile or a metal baffle, and a water-stop component installation groove is opened on the inside of the special-shaped profile or metal baffle, and the two sides of a water-stop component are embedded respectively. and be fixed in the installation groove of the water-stop component.

A method for installing the expansion joint device of the concrete bridge without transition section, characterized in that it includes the following construction steps:

a. Embed the pre-embedded steel bars in the beam body when making the beam body, and adjust the size of the installation groove area of the telescopic member and the size between the pre-embedded steel bar and the upper surface of the beam body according to the installation requirements of different types of telescopic devices;

b. After the beam body is erected, the anchor bolts and the pre-embedded steel bars are welded and fixed at the construction site, and the anti-collision baffle is installed in the installation groove area of the telescopic member. The upper surface of the baffle is flush with the upper surface level of the bridge deck pavement to be laid;

c. Install water-stop components in the installation groove area of telescopic components;

d. Install and fix the telescopic member through anchor bolts, and its upper surface is flush with the upper surface of the bridge deck pavement to be laid;

e. Pouring the filling layer to the telescopic component in the installation groove area of the telescopic component, and the upper filling layer outside the anti-collision baffle retains the thickness of the bridge deck pavement layer without pouring;

f. Lay the bridge deck pavement to the anti-collision baffle, so that the upper surface of the bridge deck pavement is flush with the upper surface of the anti-collision baffle and the telescopic member.

A method for installing the expansion joint device of the concrete bridge without transition section, characterized in that it includes the following construction steps:

a. Embed the pre-embedded steel bars in the beam body when making the beam body, and adjust the size of the installation groove area of the telescopic member and the size between the pre-embedded steel bar and the upper surface of the beam body according to the installation requirements of different types of telescopic devices;

b. After the beam body is erected, the telescopic member is fixed on the construction site by welding the anchor steel plate and anchor steel bar with the pre-embedded steel bar, and the upper surface of the telescopic member is flush with the upper surface elevation of the bridge deck pavement to be laid;

c. Pour the filling layer in the installation groove area of the telescopic component, and keep the thickness of the bridge deck pavement layer on the upper part without pouring;

d. Install the water-stop component to the telescopic component;

e. Lay the bridge deck pavement to the expansion member, and the upper surfaces are flush with each other

Compared with the prior art, the present invention has the following advantages: 1. Since the concrete structure of the transition section is cancelled, damage to various expansion joint devices caused by concrete breakage in the transition section is effectively avoided, structural safety is greatly improved, and operating costs are reduced; 2. It can be constructed in advance without being affected by the maintenance period, which is beneficial to the construction period and quality assurance; 3. When the expansion joint device is damaged and repaired, only the expansion member and the water-stop member need to be replaced and reinstalled, and the bridge deck only needs to be partially repaired. The maintenance is convenient, the construction period is short, and the repair is immediate, which is especially suitable for urban projects; 4. The height of the expansion joint device can be adjusted according to the thickness of the bridge deck pavement, and it is very flexible to use.

Description of drawings

Fig. 1 is a schematic diagram 1 of an installation plane of Embodiment 1 of the present invention;

Fig. 2 is the A-A direction sectional view of Fig. 1;

Fig. 3 is the second schematic diagram of the installation plane of the first embodiment of the present invention;

Fig. 4 is the B-B direction sectional view of Fig. 3;

Fig. 5 is a sectional view of the installation structure of Embodiment 2 of the present invention;

Fig. 6 is the sectional view of the installation structure of existing bridge expansion joint device;

Fig. 7 is a sectional view of the installation structure of another existing bridge expansion joint device.

Detailed ways

The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

Embodiment one:

As shown in FIG. 1 and FIG. 2 , the bridge expansion joint device without transition concrete in this embodiment includes a first beam body 1 , a second beam body 2 and telescopic members 7 located on both sides of the bridge expansion joint 3 . Both the beam end of the first beam body 1 and the beam end of the second beam body 2 are preset with a telescopic member installation groove area and a pre-embedded steel bar 5, and the size of the telescopic member installation groove area and the upper surface of the pre-embedded steel bar 5 reach the bridge The surface size should be adjusted accordingly according to the requirements of different types of telescopic devices.

In this embodiment, in order to effectively prevent the telescopic member 7 from being damaged by external force, anti-collision baffles 9 are fixed on both outer sides of the telescopic member, and the anti-collision baffle 9 is fixed by welding the connecting steel bar 10 with the pre-embedded steel bar 5 on the same side. The bridge deck pavement 6 is laid on the outside of the anti-collision baffle 9 , and the upper surfaces of the telescopic member 7 and the anti-collision baffle 9 are flush with the upper surface of the bridge deck pavement 6 . The bridge deck pavement layer 6 can be made of various pavement materials, such as asphalt, concrete and epoxy resin, etc. can be used.

The telescopic member 7 is welded and fixed to the pre-embedded steel bars 5 on the first beam body 1 and the second beam body 2 through anchor bolts 8 respectively. In this embodiment, the telescopic member 7 includes comb-toothed plates intersecting each other at intervals. The comb-toothed plate includes a fixed comb 71 and a movable comb 72 straddling the expansion joint 3. The first end of the fixed comb 71 is connected to the movable comb. The first ends of the comb plates 72 are intersected with each other, and the second ends of the fixed comb plate 71 and the second end of the movable comb plate 72 are respectively welded and fixed to the embedded steel bars 5 on the corresponding sides by the anchor bolts 8 .

As shown in Figure 3 and Figure 4, the second end of the movable comb plate 72 is also fixed by welding with the pre-embedded steel bar 5 on the corresponding side through the rotating structure 14 which carries out angular displacement with the beam body, and the remaining structures are the same as those in Figure 1 and Figure 2 The structure in is the same, and will not be described here.

In this embodiment, a beam-end partition 15 is respectively fixed on both sides of the expansion joint 3, and a water-stop member 4 is installed on the beam-end partition 15, and the upper surface of the beam-end partition 15 is reserved across the surface of the beam body. The installation height of the comb plate and water-stop components.

In order to further strengthen the telescopic components, the installation grooves of the telescopic components located on the inner and outer sides of the anti-collision baffle 9 are poured with a filling layer 11 , and in this embodiment, the filling layer is a concrete layer. The filling layer on the inside of the anti-collision baffle 9 is arranged between the comb plate and the upper surface of the beam end of the same side, and the bridge deck pavement layer 6 close to the anti-collision baffle 9 is laid on the outer side of the anti-collision baffle. filling layer 11. Similar to the existing structure, a stainless steel plate and a buffer rubber plate (not shown in the figure) can be arranged sequentially from top to bottom between the bottom of the telescopic member 7 and the filling layer 11 . In addition, when it is necessary to thicken the pavement layer of the bridge deck, heightening welding can be performed on the top of the anti-collision baffle 9, so as to adjust the installation height of the expansion joint device.

The construction steps of the expansion joint device of the present embodiment are as follows:

a. Embed the pre-embedded steel bar 5 in the beam body during the manufacture of the beam body, and adjust the size of the installation groove area of the telescopic member and the size between the pre-embedded steel bar 5 and the upper surface of the beam body according to the installation requirements of different types of telescopic devices;

b. After the beam body is erected, the anchor bolts 8 and the pre-embedded steel bars 5 are welded and fixed at the construction site, and the anti-collision baffle 9 is installed in the installation groove area of the telescopic member. The anti-collision baffle 9 passes through the connecting steel bar 10 and the embedded steel bar 5 Welding and fixing, and the upper surface of the anti-collision baffle is flush with the upper surface of the bridge deck pavement to be laid;

c. Install the water-stop member 4 in the telescopic member installation groove area;

d. The telescopic member 7 is installed and fixed by the anchor bolt 8, and its upper surface is flush with the elevation of the upper surface of the bridge deck pavement layer 6 to be laid;

e. Pouring the filling layer 11 (concrete layer) to the telescopic component 7 in the installation groove area of the telescopic component, and the concrete layer on the outer side of the anti-collision baffle 9 retains the thickness of the bridge deck pavement layer 6 without pouring;

f. Lay the bridge deck pavement 6 to the anti-collision baffle 9 so that the upper surface of the bridge deck pavement 6 is flush with the upper surfaces of the anti-collision baffle 9 and the telescopic member 7 .

Embodiment two:

As shown in FIG. 5 , the non-transition concrete bridge expansion joint device in this embodiment includes a first beam body 1 , a second beam body 2 and telescopic members 7 located on both sides of the bridge expansion joint 3 . Both the beam end of the first beam body 1 and the beam end of the second beam body 2 are preset with a telescopic member installation groove area and a pre-embedded steel bar 5, and the size of the telescopic member installation groove area and the upper surface of the pre-embedded steel bar 5 reach the bridge The surface size should be adjusted accordingly according to the requirements of different types of telescopic devices.

The telescopic member 7 includes telescopic bodies 73 arranged on both sides of the expansion joint 3 , and the telescopic bodies 73 are welded and fixed to the pre-embedded steel bars 5 through the anchor steel plates 12 and the anchor steel bars 13 . The bridge deck pavement layer 6 is laid on the outside of the beam body located on the telescopic body 73 , and the upper surface of the bridge deck pavement layer 6 is flush with the upper surface of the telescopic body 73 . In order to further reinforce the telescopic member, a filling layer 11 is poured in the installation groove area of the telescopic member. In this embodiment, the filling layer is a concrete layer. The bridge pavement layer 6 close to the expansion body 73 is laid on the filling layer 11 . The telescopic body 73 adopts various special-shaped profiles with installation grooves for water-stop components inside. plate, and the two sides of the water-stop member 4 are respectively embedded and fixed in the installation groove by bolts. Compared with Embodiment 1, the expansion joint device in this embodiment omits the comb plate and anchor bolts, etc., the structure is simpler, and the installation and maintenance are more convenient, but it is only suitable for devices with a small amount of expansion.

The construction steps of the expansion joint device of the present embodiment are as follows:

a. Embed the pre-embedded steel bar 5 in the beam body during the manufacture of the beam body, and adjust the size of the installation groove area of the telescopic member and the size between the pre-embedded steel bar 5 and the upper surface of the beam body according to the installation requirements of different types of telescopic devices;

b. After the beam body is erected, the telescopic member 7 is welded and fixed with the pre-embedded steel bar 5 through the anchor steel plate 12 and the anchor steel bar 13 at the construction site, and the upper surface of the telescopic member 7 is at the same level as the upper surface of the bridge deck pavement layer 6 to be laid flat;

c. Pour the concrete layer in the installation groove area of the telescopic member, and keep the thickness of the bridge deck pavement layer 6 on the upper part without pouring;

d. Install the water-stop member 4 on the telescopic member 7;

e. Lay the bridge deck pavement layer 6 to the telescopic member 7, and the upper surfaces are flush with each other.

Claims (10)

1. one kind without transition section concrete bridge expansion joint installation, comprise the first beam body (1), the second beam body (2) and the telescoping member (7) that are separately positioned on bridge expanssion joint (3) both sides, it is characterized in that: reserve telescoping member mounting groove district in the beam end of described first beam body (1) and the beam end of the second beam body (2), be preset with embedded bar (5) respectively at the upper surface of each beam end, described telescoping member (7) is fixed on embedded bar (5).

2. according to claim 1 without transition section concrete bridge expansion joint installation, it is characterized in that: be equipped with bridge deck pavement (6) in the outside of described telescoping member (7), the upper surface of this bridge deck pavement (6) and the upper surface of described telescoping member (7) flush.

3. according to claim 2 without transition section concrete bridge expansion joint installation, it is characterized in that: described telescoping member (7) comprises the comb plate that mutual transpostion interval is arranged, an anti-collision baffle plate (9) is respectively equipped with in the outside of described comb plate, described anti-collision baffle plate (9) is welded and fixed by the embedded bar (5) of connecting reinforcement (10) with homonymy, described bridge deck pavement (6) is laid on the outside of anti-collision baffle plate (9), and the upper surface of the upper surface of described comb plate and anti-collision baffle plate (9) and described bridge deck pavement (6) flushes.

4. according to claim 3 without transition section concrete bridge expansion joint installation, it is characterized in that: described comb plate comprises fixing pecten (71) and is crossed on the movable pecten (72) on shrinkage joint (3), the fixing first end of pecten (71) and the mutual transpostion interval of first end of movable pecten (72) are arranged, and fixing second end of pecten (71) and the second end of movable pecten (72) are welded and fixed respectively by the embedded bar (5) of anchor bolt (8) with respective side.

5. according to claim 4 without transition section concrete bridge expansion joint installation, it is characterized in that: the second end of described movable pecten (72) is also welded and fixed by the embedded bar (5) with the rotational structure (14) and respective side of carrying out corner reciprocal with beam body.

6. according to claim 3 or 4 or 5 without transition section concrete bridge expansion joint installation, it is characterized in that: the telescoping member mounting groove district being positioned at described anti-collision baffle plate (9) outside is all cast with packed layer (11), the packed layer of anti-collision baffle plate (9) inner side is located between comb plate and the upper surface with curb girder body beam end, and the described bridge deck pavement (6) near anti-collision baffle plate (9) is laid on the packed layer (11) that is positioned at outside anti-collision baffle plate.

7. according to claim 2 without transition section concrete bridge expansion joint installation, it is characterized in that: described telescoping member (7) includes the extrusome (73) being located at shrinkage joint (3) both sides, the upper surface flush of described extrusome (73) is in the upper surface of described bridge deck pavement (6), extrusome is welded and fixed with the embedded bar (5) of homonymy by anchor plate (12) and anchor bar (13), packed layer (11) is cast with in described telescoping member mounting groove district, the described bridge deck pavement (6) near extrusome is laid on described packed layer (11).

8. according to claim 7 without transition section concrete bridge expansion joint installation, it is characterized in that: described extrusome (73) is irregular section bar or metal baffle, have waterstop member mounting groove in the inner side of irregular section bar or metal baffle, the both sides of a waterstop member (4) embed and are fixed in described waterstop member mounting groove.

9., as claimed in claim 1 without a mounting method for transition section concrete bridge expansion joint installation, it is characterized in that comprising following construction sequence:

A, by embedded bar (5) beam system as time be embedded in Liang Tizhong, telescoping member mounting groove district's size and between embedded bar (5) and beam body upper surface size adjust accordingly according to the installation requirement of different shaped stretching device;

After the erection of b, beam body, at the construction field (site) anchor bolt (8) and embedded bar (5) are welded and fixed, anti-collision baffle plate (9) is installed in telescoping member mounting groove district, anti-collision baffle plate (9) is welded and fixed by connecting reinforcement (10) and embedded bar (5), and the upper surface of anti-collision baffle plate (9) flushes with bridge deck pavement to be laid (6) upper surface absolute altitude;

C, in telescoping member mounting groove district, waterstop member (4) is installed;

D, install fixing by telescoping member (7) by anchor bolt (8), its upper surface flushes with bridge deck pavement to be laid (6) upper surface absolute altitude;

E, in telescoping member mounting groove district, pour into a mould packed layer to telescoping member (7), anti-collision baffle plate (9) outer upper packed layer retains bridge deck pavement (6) thickness and does not pour into a mould;

F, laying bridge deck pavement (6), to anti-collision baffle plate (9), make the upper surface of the upper surface of bridge deck pavement (6) and anti-collision baffle plate (9) and telescoping member (7) flush.

10., as claimed in claim 1 without a mounting method for transition section concrete bridge expansion joint installation, it is characterized in that comprising following construction sequence:

A, by embedded bar (5) beam system as time be embedded in Liang Tizhong, telescoping member mounting groove district's size and between embedded bar (5) and beam body upper surface size adjust accordingly according to the installation requirement of different shaped stretching device;

After the erection of b, beam body, telescoping member (7) be welded and fixed with embedded bar (5) by anchor plate (12) and anchor bar (13) at the construction field (site), the upper surface of telescoping member (7) flushes with bridge deck pavement to be laid (6) upper surface absolute altitude;

C, in telescoping member mounting groove district, pour into a mould packed layer, top retains bridge deck pavement (6) thickness and does not pour into a mould;

D, installation waterstop member (4) are in telescoping member (7);

E, laying bridge deck pavement (6) are to telescoping member (7), and upper surface flushes mutually.