阅读说明：本技术 一种开孔板连接件伸缩缝的施工养护方法 (Construction and maintenance method for expansion joint of perforated plate connecting piece ) 是由 王昌将 刘德宝 王桢伟 于 2021-08-20 设计创作，主要内容包括：本发明公开了一种开孔板连接件伸缩缝的施工养护方法,包括如下步骤：将锚固件预埋到梁体上,安装指形钢板、加强钢板、支挡钢板、开孔钢板,将贯通钢筋从锚固件和开孔钢板的孔以及箍筋中穿过,并调整箍筋的位置,然后将锚固件、箍筋与贯通钢筋连接,在伸缩缝安装槽中浇筑锚固体,并进行养护,在支挡钢板的止水带固定槽中穿铁丝,然后在一端将铁丝与止水带的翼边连接,在另外一端牵拉铁丝,将止水带顺着止水带固定槽拉至另外一端,最后解除铁丝,完成止水带的安装,将端指形钢板与端开孔钢板、端加强钢板连接在一起。本发明可解决伸缩缝的安装、养护等技术问题,提高伸缩缝的使用寿命,节约社会成本。(The invention discloses a construction and maintenance method for an expansion joint of a perforated plate connecting piece, which comprises the following steps: the method comprises the steps of pre-embedding anchoring parts on a beam body, installing a finger-shaped steel plate, a reinforcing steel plate, a supporting steel plate and a perforated steel plate, enabling through reinforcing steel bars to pass through holes and stirrups of the anchoring parts and the perforated steel plate, adjusting the positions of the stirrups, connecting the anchoring parts and the stirrups with the through reinforcing steel bars, pouring anchoring bodies in expansion joint installation grooves, maintaining, penetrating iron wires in water stop fixing grooves of the supporting steel plate, connecting the iron wires with wing edges of water stops at one ends, drawing the iron wires at the other ends, pulling the water stops to the other ends along the water stop fixing grooves, finally removing the iron wires, completing installation of the water stops, and connecting the end finger-shaped steel plate, the end perforated steel plate and the end reinforcing steel plate together. The invention can solve the technical problems of installation, maintenance and the like of the expansion joint, improve the service life of the expansion joint and save social cost.)

1. A construction and maintenance method for an expansion joint of a perforated plate connecting piece is characterized in that the expansion joint comprises:

the finger-shaped steel plate is straight at one end, the other end is a finger-shaped end with a finger shape, the finger-shaped steel plates are positioned at two sides of the expansion joint, the finger-shaped ends are oppositely meshed, and the finger-shaped steel plate comprises a middle finger-shaped steel plate positioned at the middle position of the expansion joint and an end finger-shaped steel plate positioned at the end part of the expansion joint;

the reinforcing steel plate is positioned below the finger-shaped steel plate, the reinforcing steel plate comprises a middle reinforcing steel plate positioned in the middle of the expansion joint and an end reinforcing steel plate positioned at the end part of the expansion joint, the middle reinforcing steel plate is welded with the middle finger-shaped steel plate, and the end reinforcing steel plate is detachably connected with the end finger-shaped steel plate;

the supporting and blocking steel plate is positioned below the finger-shaped steel plate and arranged along the width direction of the bridge, a water stop fixing groove is formed in the supporting and blocking steel plate, and the supporting and blocking steel plate comprises a middle supporting and blocking steel plate and an end supporting and blocking steel plate, wherein the middle supporting and blocking steel plate is positioned below the middle finger-shaped steel plate and welded with the middle finger-shaped steel plate, and the end supporting and blocking steel plate is positioned below the end finger-shaped steel plate;

the perforated plate connecting piece comprises a perforated steel plate, through steel bars and stirrups, an included angle is formed between the perforated steel plate and the supporting and blocking steel plate, the through steel bars penetrate through the perforated steel plate and the stirrups, the stirrups are sleeved on the outer sides of all the through steel bars, the perforated steel plate comprises a middle perforated steel plate positioned below the middle finger-shaped steel plate and an end perforated steel plate positioned below the end finger-shaped steel plate, the middle perforated steel plate is respectively welded with the middle finger-shaped steel plate and the middle supporting and blocking steel plate, and the end perforated steel plate is welded with the end finger-shaped steel plate and is detachably connected with the end finger-shaped steel plate;

one end of the anchoring piece is embedded in the beam body, and the other end of the anchoring piece is connected with the perforated plate connecting piece;

the water stop is arranged at the lower end of the supporting and blocking steel plate and used for collecting rainwater, the water stop comprises a wing edge with an enlarged head, two ends of the water stop are provided with water baffles, the water stop is provided with a drain hole close to the bottom of the water baffle and connected with a drainage pipeline, and the outer sides of the baffles are provided with extension lap joint sections;

the anchoring body is a casting body positioned in the expansion joint installation groove and connects the expansion joint structure and the beam body into a whole;

the method specifically comprises the following steps:

a. when the beam body is manufactured, the anchoring parts are pre-embedded on the beam body according to a set interval, and the connecting height of the connecting parts with the perforated plate is reserved;

b. installing a finger-shaped steel plate, a reinforcing steel plate, a supporting and blocking steel plate and a perforated steel plate at the middle position of the expansion joint, then installing the reinforcing steel plate, the supporting and blocking steel plate and the perforated steel plate at the end parts, and adjusting the longitudinal, transverse and vertical positions to finish positioning;

c. penetrating a through steel bar through the anchoring part, the hole of the perforated steel plate and the stirrup, adjusting the position of the stirrup, and connecting the anchoring part, the stirrup and the through steel bar;

d. pouring an anchoring body in the expansion joint installation groove, and maintaining;

e. firstly, penetrating an iron wire into a water stop fixing groove of a retaining steel plate, then connecting the iron wire with a wing edge of a water stop at one end, drawing the iron wire at the other end, drawing the water stop to the other end along the water stop fixing groove, and finally removing the iron wire to finish the installation of the water stop;

f. and connecting the end finger-shaped steel plate with the end perforated steel plate and the end reinforcing steel plate together.

2. The method as claimed in claim 1, wherein the middle finger steel plate, the middle reinforcing steel plate, the middle retaining steel plate and the middle hole steel plate are assembled into a module of an integral structure by factory processing, and then the module is transported to the site for installation.

3. The method as claimed in claim 1, wherein the end reinforcing steel plate, the end retaining steel plate and the end perforated steel plate are factory-connected to form a module of an integral structure, and then the module and the end finger-shaped steel plate are transported to the site for installation.

4. The method as claimed in claim 1, wherein the anchoring member is made of UHPC concrete.

5. The method for constructing and maintaining the expansion joint of the perforated plate connecting piece as claimed in claim 1, further comprising the following cleaning steps:

g. removing the end finger-shaped steel plate to expose the access hole;

h. cleaning sundries in the expansion joint to the position of the access hole, and then cleaning the expansion joint;

j. and (5) mounting and resetting the end finger-shaped steel plate.

6. The method for constructing and maintaining the expansion joint of the perforated plate connecting piece as claimed in claim 1, further comprising the following lengthening steps:

k. chiseling the anchoring body at the position of the end finger-shaped steel plate, cutting off the through steel bar, reserving the anchoring part, and dismantling the end finger-shaped steel plate module;

m, constructing a middle finger-shaped steel plate module and an end finger-shaped steel plate module in sequence according to the construction steps;

n, pulling one end of the water stop belt out of the bridge deck to expose the water stop belt extension section, then lapping a new water stop belt with the original water stop belt, sealing the lap joint by adopting sealant, and then drawing the lengthened water stop belt to reset; or the water stop belt is replaced by the whole water stop belt.

Technical Field

The invention relates to the technical field of bridge construction, in particular to a construction and maintenance method for an expansion joint of a perforated plate connecting piece.

Background

With the rapid development of economy, the bridge construction performance all over the world has great leap, and it is known that the bridge construction in the prior art is usually the industrialized module manufacture, and the field construction mainly comprises the 'splicing and assembling' of the manufactured modules. Because the existence of expend with heat and contract with cold effect sets up the expansion joint between two adjacent modules of bridge, this expansion joint can be used to the regulation of module expend with heat and contract with cold. With the rapid development of the traffic industry in China, the usage amount of the bridge expansion joint is very large. However, the quality of the expansion joint is worried about, and the expansion joint is easily damaged and difficult to maintain, which is a general problem, and thus the economic loss is huge. The expansion joint that uses at present mainly has deformed steel expansion joint, modulus formula expansion joint, broach board type expansion joint etc. and each type expansion joint has following problem: 1. the installation of the expansion joint is greatly influenced by the positioning accuracy of the embedded steel bar, and the construction and positioning of the anchoring steel bar are difficult, so that the expansion joint is difficult to install and the installation quality is poor; 2. a maintenance space is not reserved, dust and sundries entering the expansion joint are difficult to clean, so that water drainage is not smooth, water is accumulated on the road surface of the expansion joint section, and driving safety is affected; 3. when the bridge is widened, the expansion joint is difficult to lengthen and often needs to be integrally replaced, so that the running of the existing road vehicles is influenced; 4. the toothed plate of the comb plate type expansion joint has small rigidity and is easy to warp and deform, so that the driving safety is influenced; the easy nut of bolt of anchor fishback is not hard up, the screw rod fracture, leads to the expansion joint to become invalid, influences driving safety.

Disclosure of Invention

The invention aims to provide a construction and maintenance method for an expansion joint of a perforated plate connecting piece, which can solve the technical problems of installation, maintenance and the like of the expansion joint, prolong the service life of the expansion joint and save social cost.

In order to achieve the purpose, the invention adopts the following technical scheme:

a construction and maintenance method for an expansion joint of a perforated plate connecting piece is disclosed, wherein the expansion joint comprises:

the finger-shaped steel plate is straight at one end, the other end is a finger-shaped end with a finger shape, the finger-shaped steel plates are positioned at two sides of the expansion joint, the finger-shaped ends are oppositely meshed, and the finger-shaped steel plate comprises a middle finger-shaped steel plate positioned at the middle position of the expansion joint and an end finger-shaped steel plate positioned at the end part of the expansion joint;

the reinforcing steel plate is positioned below the finger-shaped steel plate, the reinforcing steel plate comprises a middle reinforcing steel plate positioned in the middle of the expansion joint and an end reinforcing steel plate positioned at the end part of the expansion joint, the middle reinforcing steel plate is welded with the middle finger-shaped steel plate, and the end reinforcing steel plate is detachably connected with the end finger-shaped steel plate;

the supporting and blocking steel plate is positioned below the finger-shaped steel plate and arranged along the width direction of the bridge, a water stop fixing groove is formed in the supporting and blocking steel plate, and the supporting and blocking steel plate comprises a middle supporting and blocking steel plate and an end supporting and blocking steel plate, wherein the middle supporting and blocking steel plate is positioned below the middle finger-shaped steel plate and welded with the middle finger-shaped steel plate, and the end supporting and blocking steel plate is positioned below the end finger-shaped steel plate;

the perforated plate connecting piece comprises a perforated steel plate, through steel bars and stirrups, an included angle is formed between the perforated steel plate and the supporting and blocking steel plate, the through steel bars penetrate through the perforated steel plate and the stirrups, the stirrups are sleeved on the outer sides of all the through steel bars, the perforated steel plate comprises a middle perforated steel plate positioned below the middle finger-shaped steel plate and an end perforated steel plate positioned below the end finger-shaped steel plate, the middle perforated steel plate is respectively welded with the middle finger-shaped steel plate and the middle supporting and blocking steel plate, and the end perforated steel plate is welded with the end finger-shaped steel plate and is detachably connected with the end finger-shaped steel plate;

one end of the anchoring piece is embedded in the beam body, and the other end of the anchoring piece is connected with the perforated plate connecting piece;

the water stop is arranged at the lower end of the supporting and blocking steel plate and used for collecting rainwater, the water stop comprises a wing edge with an enlarged head, two ends of the water stop are provided with water baffles, the water stop is provided with a drain hole close to the bottom of the water baffle and connected with a drainage pipeline, and the outer sides of the baffles are provided with extension lap joint sections;

the anchor body, for the casting body that is located expansion joint mounting groove, the anchor body links into an organic whole with expansion joint structure and roof beam body.

The method specifically comprises the following steps:

a. when the beam body is manufactured, the anchoring parts are pre-embedded on the beam body according to a set interval, and the connecting height of the connecting parts with the perforated plate is reserved;

b. installing a finger-shaped steel plate, a reinforcing steel plate, a supporting and blocking steel plate and a perforated steel plate at the middle position of the expansion joint, then installing the reinforcing steel plate, the supporting and blocking steel plate and the perforated steel plate at the end parts, and adjusting the longitudinal, transverse and vertical positions to finish positioning;

c. penetrating a through steel bar through the anchoring part, the hole of the perforated steel plate and the stirrup, adjusting the position of the stirrup, and connecting the anchoring part, the stirrup and the through steel bar;

d. pouring an anchoring body in the expansion joint installation groove, and maintaining;

e. firstly, penetrating an iron wire into a water stop fixing groove of a retaining steel plate, then connecting the iron wire with a wing edge of a water stop at one end, drawing the iron wire at the other end, drawing the water stop to the other end along the water stop fixing groove, and finally removing the iron wire to finish the installation of the water stop;

f. and connecting the end finger-shaped steel plate with the end perforated steel plate and the end reinforcing steel plate together.

Preferably, the middle finger-shaped steel plate, the middle reinforcing steel plate, the middle retaining steel plate and the middle open hole steel plate are processed and connected into a module of an integral structure by a factory, and then the module is transported to the field for installation.

The modularized factory prefabrication mode is beneficial to improving the production efficiency.

Preferably, the end reinforcing steel plate, the end supporting steel plate and the end opening steel plate are processed and connected into a module of an integral structure by a factory, and then the module and the end finger-shaped steel plate are conveyed to be installed on site.

The modularized factory prefabrication mode is beneficial to improving the production efficiency.

Preferably, the anchor is made of UHPC concrete.

It can be understood that the anchor needs to have extremely high strength, while UHPC concrete is ultra-high performance concrete, which has ultra-high durability and ultra-high mechanical properties, and thus, the strength requirement of the anchor can be sufficiently satisfied.

Preferably, the method further comprises the following cleaning steps:

g. removing the end finger-shaped steel plate to expose the access hole;

h. cleaning sundries in the expansion joint to the position of the access hole, and then cleaning the expansion joint;

j. and (5) mounting and resetting the end finger-shaped steel plate.

The step method is used for maintenance in the later use process, and is convenient for cleaning sundries accumulated in the expansion joint.

Preferably, the method further comprises the following lengthening step:

k. chiseling the anchoring body at the position of the end finger-shaped steel plate, cutting off the through steel bar, reserving the anchoring part, and dismantling the end finger-shaped steel plate module;

m, constructing a middle finger-shaped steel plate module and an end finger-shaped steel plate module in sequence according to the construction steps;

n, pulling one end of the water stop belt out of the bridge deck to expose the water stop belt extension section, then lapping a new water stop belt with the original water stop belt, sealing the lap joint by adopting sealant, and then drawing the lengthened water stop belt to reset; or the water stop belt is replaced by the whole water stop belt.

The method is used for lengthening and matching the water stop belt when the bridge is widened in the later period.

Therefore, the invention has the following beneficial effects: the structure is simple, the implementation is convenient, the maintenance is convenient, and the extension can be realized. Through anchor assembly, trompil board connecting piece, the anchor body, firmly link together expansion joint and the roof beam body, it is low to anchor assembly's pre-buried required precision during the construction, improved the installation quality at expansion joint. The finger-shaped steel plate is provided with the reinforcing steel plate, so that the stress performance is improved, the rigidity of the finger-shaped steel plate is greatly improved, the phenomenon that the comb teeth of the existing expansion joint are easy to warp is avoided, and the finger-shaped steel plate can ensure safety, reliability and driving safety under various load effects. The perforated plate connecting piece can bear the force jointly by a plurality of modules, also can bear the force alone by each module, and the extension of expansion joint does not need the whole piece to be changed when the bridge of being convenient for pieces together wide does benefit to the vehicle normal operating of the existing road of guarantee. The finger-shaped steel plates at the end parts of the expansion joints are of a detachable structure, so that an access hole is formed, and the maintenance of the expansion joints is facilitated.

Drawings

Fig. 1 is a schematic top view of an expansion joint according to the present invention.

Fig. 2 is a cross-sectional view at a-a in fig. 1.

Fig. 3 is a cross-sectional view of the finger steel plate, the reinforcing steel plate, and the baffle steel plate in fig. 2 taken along the direction B.

Fig. 4 is a C-direction cross-sectional view of the finger steel plate, the reinforcing steel plate, and the baffle steel plate in fig. 2.

Fig. 5 is a schematic structural view of the retaining steel plate.

Fig. 6 is a schematic view of a structure of an open-pore steel plate.

Fig. 7 is a schematic view of a structure of a reinforced steel plate.

Fig. 8 is a schematic structural diagram of a middle finger-shaped steel plate.

Fig. 9 is a schematic view of a structure of an end finger steel plate.

Fig. 10 is a schematic view of a water stop.

Fig. 11 is a cross-sectional view taken at D-D in fig. 10.

In the figure: 1. the bridge comprises a beam body 2, a bridge deck pavement 3, an expansion joint installation groove 4, a finger-shaped steel plate 41, a middle finger-shaped steel plate 42, an end finger-shaped steel plate 5, a reinforced steel plate 51, a middle reinforced steel plate 52, an end reinforced steel plate 6, a supporting steel plate 61, a middle supporting steel plate 62, an end supporting steel plate 63, a waterstop fixing groove 7, a perforated steel plate 71, a middle perforated steel plate 72, an end perforated steel plate 8, a through steel bar 9, an anchoring part 10, a stirrup 11, a waterstop 111, a wing edge 112, a water baffle 113, a water drainage hole 114, an extension lap joint section 12 and an anchoring body.

Detailed Description

The invention is further described with reference to the following detailed description and accompanying drawings.

A method for constructing and maintaining an expansion joint of a perforated plate connecting member, as shown in fig. 1 to 11, the expansion joint comprising:

the finger-shaped steel plate 4 is straight at one end, the other end is a finger-shaped end with a finger shape, the finger-shaped steel plates are positioned at two sides of the expansion joint, the finger-shaped ends are oppositely meshed, and the finger-shaped steel plate comprises a middle finger-shaped steel plate 41 positioned at the middle position of the expansion joint and an end finger-shaped steel plate 42 positioned at the end part of the expansion joint;

and the reinforcing steel plate 5 is positioned below the finger-shaped steel plates, the reinforcing steel plate comprises a middle reinforcing steel plate 51 positioned in the middle of the expansion joint and an end reinforcing steel plate 52 positioned at the end part of the expansion joint, the middle reinforcing steel plate is welded with the middle finger-shaped steel plate, and the end reinforcing steel plate and the end finger-shaped steel plate are detachably connected through screws and the like. The edge of the end finger-shaped steel plate can be made into an oblique angle so as to adapt to the change of the intersection angle of the bridge;

and the supporting and blocking steel plate 6 is positioned below the finger-shaped steel plate and is arranged along the width direction of the bridge, a water stop fixing groove 63 is formed in the supporting and blocking steel plate, and the supporting and blocking steel plate comprises a middle supporting and blocking steel plate 61 positioned below the middle finger-shaped steel plate and welded with the middle finger-shaped steel plate and an end supporting and blocking steel plate 62 positioned below the end finger-shaped steel plate. It should be noted that the end supporting steel plate is not connected with the end finger-shaped steel plate, so as to facilitate later-stage disassembly and assembly maintenance;

the perforated plate connecting piece comprises a perforated steel plate 7, through steel bars 8 and stirrups 10, an included angle is formed between the perforated steel plate and a supporting and blocking steel plate, the through steel bars penetrate through the perforated steel plate and the stirrups, the stirrups are sleeved on the outer sides of all the through steel bars, the perforated steel plate comprises a middle perforated steel plate 71 and an end perforated steel plate 72, the middle perforated steel plate is located below the middle finger-shaped steel plate, the end perforated steel plate is located below the end finger-shaped steel plate, the middle perforated steel plate is respectively welded with the middle finger-shaped steel plate and the middle supporting and blocking steel plate, and the end perforated steel plate is welded with the end finger-shaped steel plate and detachably connected with the end finger-shaped steel plate;

one end of the anchoring piece 9 is embedded in the beam body, and the other end is connected with the perforated plate connecting piece;

the water stop belt 11 is arranged at the lower end of the supporting and blocking steel plate and used for collecting rainwater, the water stop belt comprises a wing edge 111 with an enlarged head, two ends of the water stop belt are provided with water baffles 112, the water stop belt is provided with a drain hole 113 close to the bottom of the water baffle and connected with a drainage pipeline (not shown in the figure), and the outer sides of the baffles are provided with lengthened lap joint sections 114;

and the anchoring body 12 is a casting body positioned in the expansion joint installation groove, and the expansion joint structure and the beam body are connected into a whole by the anchoring body.

The method specifically comprises the following steps:

a. when the beam body 1 is manufactured, the anchoring parts are pre-embedded on the beam body according to a set distance, and the connecting height of the connecting parts with the perforated plate is reserved;

b. installing a middle finger-shaped steel plate, a middle reinforcing steel plate, a middle supporting steel plate and a middle open-hole steel plate at the middle position of the expansion joint, then installing an end reinforcing steel plate, an end supporting steel plate and an end open-hole steel plate at the end part, and adjusting the longitudinal, transverse and vertical positions to complete positioning;

c. sequentially penetrating the through steel bars through the anchoring part, the hole of the perforated steel plate and the stirrup, adjusting the position of the stirrup, and connecting the anchoring part, the stirrup and the through steel bars;

d. pouring an anchoring body in the expansion joint installation groove 3, and maintaining;

e. firstly, penetrating an iron wire into a water stop fixing groove of a retaining steel plate, then connecting the iron wire with a wing edge of a water stop at one end, drawing the iron wire at the other end, drawing the water stop to the other end along the water stop fixing groove, and finally removing the iron wire to finish the installation of the water stop;

f. and connecting the end finger-shaped steel plate with the end perforated steel plate and the end reinforcing steel plate together.

The figure also includes a bridge deck 2.

Preferably, the middle finger-shaped steel plate, the middle reinforcing steel plate, the middle retaining steel plate and the middle open hole steel plate are processed and connected into a module of an integral structure by a factory, and then the module is transported to be installed on site.

The modularized factory prefabrication mode is beneficial to improving the production efficiency.

Further, the end reinforcing steel plate, the end supporting and blocking steel plate and the end opening steel plate are processed and connected into a module of an integral structure by a factory, and then the module and the end finger-shaped steel plate are conveyed to be installed on site together.

The modularized factory prefabrication mode is beneficial to improving the production efficiency.

Further, the anchor is made of UHPC concrete.

It can be understood that the anchor needs to have extremely high strength, while UHPC concrete is ultra-high performance concrete, which has ultra-high durability and ultra-high mechanical properties, and thus, the strength requirement of the anchor can be sufficiently satisfied.

The invention also comprises the following cleaning steps:

g. removing the end finger-shaped steel plate to expose the access hole;

h. cleaning sundries in the expansion joint to the position of the access hole, and then cleaning the expansion joint;

j. and (5) mounting and resetting the end finger-shaped steel plate.

The step method is used for maintenance in the later use process, and is convenient for cleaning sundries accumulated in the expansion joint.

The invention also comprises the following lengthening steps:

k. chiseling the anchoring body at the position of the end finger-shaped steel plate, cutting off the through steel bar, reserving the anchoring part, and dismantling the end finger-shaped steel plate module;

m, constructing a middle finger-shaped steel plate module and an end finger-shaped steel plate module in sequence according to the construction steps;

n, pulling one end of the water stop belt out of the bridge deck to expose the water stop belt extension section, then lapping a new water stop belt with the original water stop belt, sealing the lap joint by adopting sealant, and then drawing the lengthened water stop belt to reset; or the water stop belt is replaced by the whole water stop belt.

The method is used for lengthening and matching the water stop belt when the bridge is widened in the later period.