CN221702120U - Telescopic three-dimensional steel frame capable of sliding and stable in corrugated steel web installation - Google Patents

Abstract

The utility model relates to the technical field of steel structure construction, and discloses a telescopic slidable three-dimensional steel frame with a corrugated steel web plate installed stably, comprising a three-dimensional support frame, a lower connecting ear, an upper connecting ear, a left corrugated steel web plate and a right corrugated steel web plate; the utility model can slide on a running wheel installed on the corrugated steel web plate through a slide rail, so as to realize a flow-type sliding support, and after moving forward, the running wheel at the rear can be removed and installed at the front for circulation; and both sides of the upper and lower ends of the three-dimensional steel frame are provided with hinged sliding shoes, which can be pin-connected with the connecting ear plates fixed on the corrugated steel web plate by a pin shaft, so that the three-dimensional steel frame is firmly positioned between the left and right corrugated steel web plates, and the pin shaft can be removed when sliding is required, and a large number of positioning structures of the corrugated steel web plates do not need to be equipped when constructing a composite beam bridge of a corrugated steel web bridge, which is beneficial to engineering construction.

Description

A telescopic and slidable three-dimensional steel frame with stable installation of corrugated steel web

Technical Field

The utility model relates to the technical field of steel structure construction, in particular to a telescopic and slidable three-dimensional steel frame with stable installation of corrugated steel webs.

Background Art

One of the common diseases of prestressed concrete continuous beam (rigid frame) bridges is cracking of the web concrete of the box beam. In particular, the occurrence of oblique cracks in the web greatly reduces the efficiency of the prestressing force arranged in the web, and the bearing capacity and durability of the bridge structure will be greatly affected. In order to solve the cracking problem, it is considered to use corrugated steel webs instead of concrete webs. Since the corrugated steel web composite bridge has the advantages of light weight, convenient construction, good seismic performance, avoiding cracking of the concrete box beam web, and beautiful shape, it has developed rapidly in my country in recent years and is a new type of bridge with great potential. In the corrugated steel web box beam, the corrugated steel web is arranged between the upper and lower flange plates. Specifically, a corrugated steel web with a thickness of about 10mm to 20mm is used to replace the original traditional concrete web with a thickness of about 300mm to 800mm. The upper and lower flange plates are both concrete plates. The corrugated steel web and the concrete flange plate are combined to form an integral structure to bear the load together. In terms of economic performance, corrugated steel webs replace traditional concrete webs, and the self-weight of the structure is 20% to 30% lighter than that of traditional concrete box girders. The amount of engineering work for the lower structure is also reduced accordingly, reducing the project cost. In terms of structural stress, the concrete top and bottom plates are resistant to bending and the corrugated steel webs are resistant to shear. The structural stress is very clear, and the corrugated steel webs have a wrinkle effect in the longitudinal direction. This arrangement not only improves the stability, strength and material utilization efficiency of the structure, but also gives full play to the advantages of concrete's compression resistance and steel's tension resistance. At the same time, it also completely solves common engineering problems such as web cracking in concrete bridges.

Due to the high height of the corrugated steel web and the large weight of a single piece, the corrugated steel web is generally installed by transporting it under the bridge and hoisting it with a hanging basket or a crane. During the construction of the corrugated steel web box girder, the crane needs to rotate to carry out other workpiece hoisting work, so after the corrugated steel web is hoisted, the crane will be separated from the corrugated steel web; while the upper and lower parts of the corrugated steel web are cast with concrete slabs, the positioning deviation of the corrugated steel web directly leads to the lap length of the bottom end of the slab not meeting the standard; the error of lateral positioning not only changes the cross-sectional shape of the bridge, but also affects the rationality of the cross-sectional force. The corrugated steel web must be accurately positioned. If there is a deviation in positioning, it will have a greater impact on the overall force of the bridge. Therefore, before casting the upper and lower flange plates to close the ring, it is necessary to ensure the installation stability and rigidity of the corrugated steel web. In order to ensure the installation stability and rigidity of the corrugated steel webs on both sides, it is necessary to set a temporary positioning support structure between the corrugated steel webs on both sides. However, in the prior art, the positioning structure of the corrugated steel web is not convenient to disassemble and assemble. During the construction of the composite beam bridge with corrugated steel web bridge, a large number of positioning structures of the corrugated steel web are required, which is not conducive to engineering construction.

Utility Model Content

The utility model aims to provide a telescopic and slidable three-dimensional steel frame with stable installation of corrugated steel webs. The three-dimensional steel frame is used for temporary support when hoisting and welding the corrugated steel webs, and ensures the accuracy and rigidity of the three surfaces of the plane, elevation and section of the corrugated steel webs before closing into a ring.

To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a telescopic and slidable three-dimensional steel frame with a corrugated steel web installed stably, comprising a three-dimensional support frame, a lower connecting ear, an upper connecting ear, a left corrugated steel web and a right corrugated steel web, wherein the three-dimensional support frame is installed between the left corrugated steel web and the right corrugated steel web, and the three-dimensional support frame comprises an upper support frame and a lower support frame, wherein the upper support frame and the lower support frame both comprise transverse telescopic beams, oblique telescopic beams and longitudinal telescopic beams, and the two ends of the longitudinal telescopic beams are respectively connected to the The two transverse telescopic beams are fixedly connected, and the two ends of the oblique telescopic beams are respectively hinged to the two transverse telescopic beams. The upper support frame is connected to the top of the lower support frame through the beams to form a three-dimensional support frame. Both sides of the two ends of the upper support frame and the lower support frame are respectively fixedly connected with a hinged sliding shoe. The hinged sliding shoes at both ends of the upper support frame are respectively fixedly connected to the left corrugated steel web and the right corrugated steel web through the upper connecting ears, and the hinged sliding shoes at both ends of the lower support frame are respectively fixedly connected to the left corrugated steel web and the right corrugated steel web through the lower connecting ears.

As a preferred technical solution of the utility model, multiple upper connecting ears are linearly equal in height and are respectively welded to the left corrugated steel web and the right corrugated steel web, the distance between the upper connecting ears is equal to the distance between the hinged shoes at both ends of the upper support frame, the upper connecting ears are pinned to the hinged shoes through pins, and multiple lower connecting ears are linearly equal in height and are respectively fixedly connected to the left corrugated steel web and the right corrugated steel web, the distance between the multiple lower connecting ears is equal to the distance between the hinged shoes at both ends of the corresponding lower support frame, and the lower connecting ears are pinned to the hinged shoes through pins.

As a preferred technical solution of the utility model, a parallel slide rail is fixedly connected below both ends of the upper support frame, and a running wheel is arranged below the slide rail. The running wheels below the slide rails at both ends are respectively installed on the left corrugated steel web and the right corrugated steel web.

As a preferred technical solution of the utility model, the slide rail is made of channel steel, and the opening is arranged downward and buckled on the running wheel.

As a preferred technical solution of the utility model, mounting shafts are fixedly mounted on the side walls of the left corrugated steel web and the right corrugated steel web, and the walking wheels are rotatably mounted on the mounting shafts.

As a preferred technical solution of the utility model, a universal connecting ear of a support frame is provided on the side wall of the transversely retractable beam.

Compared with the prior art, the utility model has the following beneficial effects: the utility model can slide on the running wheels installed on the corrugated steel web through the slide rails to realize the flow-type sliding support. After moving forward, the running wheels at the rear can be removed and installed at the front for circulation. Both sides of the upper and lower ends of the three-dimensional steel frame are provided with hinged sliding shoes, which can be pin-connected with the connecting ear plates fixed on the corrugated steel webs by using pins to position the three-dimensional steel frame firmly between the left and right corrugated steel webs. When sliding is required, the pins can be removed to slide. When the corrugated steel web bridge composite beam bridge is constructed, it is not necessary to equip a large number of corrugated steel web positioning structures, which is beneficial to engineering construction.

BRIEF DESCRIPTION OF THE DRAWINGS

Fig. 1 is a schematic diagram of the structure of the utility model;

FIG2 is a schematic diagram of the installation structure of the three-dimensional steel frame and the left corrugated steel web of the utility model;

FIG3 is a schematic diagram of the installation structure of the three-dimensional steel frame and the right corrugated steel web of the utility model;

FIG4 is an enlarged schematic diagram of the structure of point A in FIG1 of the present utility model;

FIG5 is an enlarged structural schematic diagram of point B in FIG1 of the present invention.

In the figure: 1. lower connecting ear; 2. hinged sliding shoe; 3. upper connecting ear; 4. mounting shaft; 6. slide rail; 7. left corrugated steel web; 8. right corrugated steel web; 9. walking wheel; 10. pin shaft; 11. upper support frame; 1101. universal connecting ear of support frame; 1102. transverse retractable beam; 1103. oblique retractable beam; 1104. longitudinal retractable beam; 12. lower support frame; 13. beam.

DETAILED DESCRIPTION

As shown in FIGS. 1-5 , in the embodiment of the utility model, the utility model provides a telescopic slidable three-dimensional steel frame with a corrugated steel web plate installed stably, including a three-dimensional support frame, a lower connecting ear 1, an upper connecting ear 3, a left corrugated steel web plate 7 and a right corrugated steel web plate 8, wherein the three-dimensional support frame is installed between the left corrugated steel web plate 7 and the right corrugated steel web plate 8, and the three-dimensional support frame includes an upper support frame 11 and a lower support frame 12, wherein the upper support frame 11 and the lower support frame 12 both include a transverse telescopic beam 1102, an oblique telescopic beam 1103 and a longitudinal telescopic beam 1104 The two ends of the longitudinal telescopic beam 1104 are respectively fixedly connected to the two transverse telescopic beams 1102, and the two ends of the oblique telescopic beam 1103 are respectively hinged to the two transverse telescopic beams 1102. The upper support frame 11 is connected to the top of the lower support frame 12 through the beam 13 to form a three-dimensional support frame. Both sides of the upper support frame 11 and the lower support frame 12 are respectively fixedly connected with a hinged sliding shoe 2. The hinged sliding shoes 2 at both ends of the upper support frame 11 are respectively fixedly connected to the left corrugated steel web 7 and the right corrugated steel web 8 through the upper connecting ears 3. The hinged sliding shoes 2 at the ends are fixedly connected to the left corrugated steel web 7 and the right corrugated steel web 8 through the lower connecting ears 1 respectively; the three-dimensional steel frame is used for temporary support. Before closing into a ring, the accuracy and rigidity of the three surfaces of the plane, elevation and section of the corrugated steel web are ensured. The three-dimensional steel frame moves forward synchronously with the cantilever casting hanging basket of the beam bridge construction, and the disassembly and assembly are convenient. Slide rails 6 are arranged at both ends of the three-dimensional steel frame. The slide rails 6 can slide on the running wheels 9 installed on the corrugated steel web to realize the flow-type sliding support. After moving forward, the running wheels 9 at the rear can be removed and installed at the front for turnover use; and the upper and lower parts of the three-dimensional steel frame are Articulated sliding shoes 2 are provided on both sides of the end, and the articulated sliding shoes 2 can be pinned to the connecting ear plates fixed on the corrugated steel webs by using pins 10, so that the three-dimensional steel frame is positioned firmly between the left and right corrugated steel webs. When sliding is required, the pins 10 can be removed to slide. During the construction of the corrugated steel web bridge composite beam bridge, there is no need to equip a large number of corrugated steel web positioning structures, which is beneficial to engineering construction. It should be supplemented that multiple three-dimensional steel frames can be cooperated between the left corrugated steel web 7 and the right corrugated steel web 8, and adjacent three-dimensional steel frames are connected by connecting rods to improve the stability of the overall structure.

In this embodiment, preferably, a plurality of upper connecting ears 3 are linearly and equal in height and are respectively welded and connected to the left corrugated steel web 7 and the right corrugated steel web 8, the distance between the upper connecting ears 3 is equal to the distance between the articulated shoes 2 at both ends of the upper support frame 11, the upper connecting ears 3 are pinned to the articulated shoes 2 through the pin shaft 10, and a plurality of lower connecting ears 1 are linearly and equal in height and are respectively fixedly connected to the left corrugated steel web 7 and the right corrugated steel web 8, the distance between the plurality of lower connecting ears 1 is equal to the distance between the articulated shoes 2 at both ends of the corresponding lower support frame 12, and the lower connecting ears 1 are pinned to the articulated shoes 2 through the pin shaft 10; thereby improving the convenience of installation.

In this embodiment, preferably, a parallel slide rail 6 is fixedly connected below both ends of the upper support frame 11, and a running wheel 9 is provided below the slide rail 6. The running wheels 9 below the slide rails 6 at both ends are respectively installed on the left corrugated steel web 7 and the right corrugated steel web 8.

In this embodiment, preferably, the slide rail 6 is made of channel steel, with the opening facing downward, and buckled on the travel wheel 9.

In this embodiment, preferably, the side walls of the left corrugated steel web 7 and the right corrugated steel web 8 are fixedly mounted with mounting shafts 4, and the running wheels 9 are rotatably mounted on the mounting shafts 4; thereby, the slide rails 6 can slide on the running wheels 9 mounted on the corrugated steel webs to achieve flow-type sliding support. After moving forward, the running wheels 9 at the rear can be removed and installed at the front for rotational use.

In this embodiment, preferably, a support frame universal connection ear 1101 is provided on the side wall of the transversely retractable beam 1102 , so as to facilitate installation of other structures on the transversely retractable beam 1102 .

In order to facilitate sliding installation, it is necessary to weld the upper connecting ear 3 and the lower connecting ear 1 when processing the corrugated steel web. The distance between the upper connecting ear 3 and the lower connecting ear 1 along the bridge direction is 1 times the length of the three-dimensional rigid frame along the bridge direction. The connecting ear is provided with a connecting hole. The plane projection of the connecting holes of all the ear plates on the steel web of the whole bridge must be on the same straight line and will not change due to the change of the plate thickness of the steel web. The walking wheel 9 is symmetrical on the left and right and is installed on the installation shaft in the forward direction. Before moving forward, remove the pin 10 that connects the upper connecting ear 3 and the lower connecting ear 1 and the articulated sliding shoe 2. After moving forward, remove the rear walking wheel 9 and install it on the front installation shaft for rotation. Then pin the pin 10 to the corresponding upper connecting ear 3 and the lower connecting ear 1 and the articulated sliding shoe 2, and the corrugated steel web installed later can be supported and installed.

Claims (6)

1. The utility model provides a wave form steel web installation stable telescopic three-dimensional steelframe that can slide, includes three-dimensional support frame, lower floor's engaging lug (1), upper strata engaging lug (3), left side wave form steel web (7) and right side wave form steel web (8), its characterized in that: the three-dimensional support frame is installed between left side corrugated steel web (7) and right side corrugated steel web (8), and the three-dimensional support frame includes upper supporting frame (11) and lower supporting frame (12), upper supporting frame (11) and lower supporting frame (12) all include horizontal scalable stringer (1102), slant scalable stringer (1103) and vertical scalable stringer (1104), the both ends of vertical scalable stringer (1104) respectively with two horizontal scalable stringers (1102) fixed connection, the both ends of slant scalable stringer (1103) are articulated with two horizontal scalable stringers (1102) respectively, upper supporting frame (11) are connected in the top of lower supporting frame (12) through stringer (13) and are formed three-dimensional support frame, and the both sides at upper supporting frame (11) and lower supporting frame (12) both ends all fixedly connected with one articulated shoe (2) respectively, and articulated shoe (2) at upper supporting frame (11) both ends are connected with left side corrugated steel web (7) and right side corrugated steel web (8) through upper strata engaging lug (3) respectively, and articulated shoe (12) are connected with left side corrugated steel web (7) and right side corrugated steel web (8) fixed connection respectively.

2. The corrugated steel web installation stable telescopic slidable three-dimensional steel frame according to claim 1, wherein: a plurality of upper-layer connecting lugs (3) are respectively welded on a left-side corrugated steel web (7) and a right-side corrugated steel web (8) in a linear equal-height mode, the distance between the upper-layer connecting lugs (3) and the distance between the hinged sliding shoes (2) at two ends of an upper supporting frame (11) are equal, the upper-layer connecting lugs (3) are in pin joint with the hinged sliding shoes (2) through pin shafts (10), a plurality of lower-layer connecting lugs (1) are respectively fixedly connected on the left-side corrugated steel web (7) and the right-side corrugated steel web (8) in a linear equal-height mode, the distance between the lower-layer connecting lugs (1) and the distance between the hinged sliding shoes (2) at two ends of a corresponding lower supporting frame (12) are equal, and the lower-layer connecting lugs (1) are in pin joint with the hinged sliding shoes (2) through pin shafts (10).

3. The corrugated steel web installation stable telescopic slidable three-dimensional steel frame according to claim 1, wherein: the two ends of the upper supporting frame (11) are respectively and fixedly connected with a sliding rail (6) which is parallel to each other, travelling wheels (9) are arranged below the sliding rails (6), and the travelling wheels (9) below the sliding rails (6) at the two ends are respectively arranged on the left corrugated steel web (7) and the right corrugated steel web (8).

4. A corrugated steel web installation stable telescopic slidable three-dimensional steel frame according to claim 3, characterized in that: the sliding rail (6) adopts channel steel, and the opening is downwards arranged and is buckled on the travelling wheel (9).

5. A corrugated steel web installation stable telescopic slidable three-dimensional steel frame according to claim 3, characterized in that: the left corrugated steel web (7) and the right corrugated steel web (8) are fixedly provided with mounting shafts (4) on the side walls, and the travelling wheels (9) are rotatably mounted on the mounting shafts (4).

6. The corrugated steel web installation stable telescopic slidable three-dimensional steel frame according to claim 1, wherein: the lateral wall of the transverse telescopic stringer (1102) is provided with a support frame universal connection lug (1101).