Supporting pedestal for producing pi-shaped steel-concrete composite beam
By using support pedestals in bridge construction and using concrete convex strips and steel support seats for support, the problems of ground depression and lifting are solved, and a safer and more efficient construction process is achieved.
Patent Information
- Application Number
- CN202421879097.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-05
- Publication Date
- 2025-06-24
- Estimated Expiration
- 2034-08-05
AI Technical Summary
In bridge construction, the prior art can easily cause ground depression and inconvenient lifting of π-shaped steel-concrete composite beams.
A support pedestal for the production of π-shaped steel-concrete composite beams is designed, and two parallel concrete convex strips are arranged on the concrete hardened ground. Several steel supporting seats are distributed on the convex strips, and mold support tracks and avoiding grooves are provided to support and lift through these structures.
The ground depression is effectively avoided, and the lifting process of π-shaped steel-concrete composite beams is simplified, improving the safety and efficiency of construction.
Smart Images
Figure CN223013507U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of bridge construction, in particular to a support pedestal for the production of π-shaped steel-concrete composite beams. Background Art
[0002] In bridge construction, the π-shaped steel-concrete composite beam is prefabricated in a prefabrication yard first, and then transported to the bridge pier by a vehicle. The π-shaped steel-concrete composite beam includes a bridge deck of concrete structure, a left steel beam and a right steel beam. Longitudinal ribs extending longitudinally are arranged on the lower surface of the bridge deck. The left steel beam and the right steel beam are distributed transversely and extend longitudinally. The left steel beam includes a left top plate, a left vertical plate and a left bottom plate, and the left top plate, the left vertical plate and the left bottom plate are connected together in an "I" shape. The left top plate is fixed on the lower surface of the left rib. The right steel beam includes a right top plate, a right vertical plate and a right bottom plate, and the right top plate, the right vertical plate and the right bottom plate are connected together in an "I" shape. The right top plate is fixed on the right rib. There is a problem that it is easy to cause the ground to sink and it is inconvenient to lift. Content of the Utility Model
[0003] The utility model aims to provide a support pedestal for the production of π-shaped steel-concrete composite beams, which is not easy to cause the ground to sink when supporting the steel beam, and a joist is inserted through the edge to lift the π-shaped steel-concrete composite beam, solving the problems of easy ground depression and inconvenient lifting existing in the existing direct placement on the ground for pouring.
[0004] To achieve the above-mentioned utility model object, the present utility model adopts the following technology: A support pedestal for the production of a π-shaped steel-concrete composite beam. The π-shaped steel-concrete composite beam includes a bridge deck of a concrete structure and two steel beams connected to the lower surface of the bridge deck. The two steel beams are distributed transversely to the bridge and extend longitudinally. It is characterized in that it includes a concrete hardened ground and two concrete ribs arranged on the concrete hardened ground. The two concrete ribs are parallel, and the distance between the left steel beam and the right steel beam is equal to the distance between the two concrete ribs. A number of steel support pedestals are cast on the concrete ribs along the extension direction of the concrete ribs. A left mold support track is provided on the left side of the two concrete ribs, a right mold support track is provided on the right side, and an intermediate mold support track is provided between the two concrete ribs. Avoidance grooves are provided at both ends of the concrete ribs, and the avoidance grooves are for the bottom support beam for lifting the π-shaped steel-concrete composite beam to pass through. The avoidance grooves penetrate the concrete ribs perpendicular to the extension direction of the concrete ribs; The mold for pouring the bridge deck includes a left mold, an intermediate mold and a right mold. When producing the π-shaped steel-concrete composite beam, the two steel beams are respectively supported on the steel support pedestals on the two concrete ribs, the left mold is supported on the left mold support track, the right mold is supported on the right mold support track, and the intermediate mold is supported on the intermediate mold support track. Then, concrete is poured into the mold for pouring the bridge deck to form the bridge deck. This technical solution sets multiple steel support pedestals for support, can independently control each steel support pedestal, is equivalent to full hall support, and effectively alleviates the sinking of the concrete hardened ground.
[0005] Preferably, angle steels are cast as edging on the left and right edges of the upper end surface of the concrete rib. This can prevent the edge of the concrete rib from being damaged during the process of placing the steel beam on the edge and then pushing it in.
[0006] Preferably, the steel support pedestal includes two I-beam sections extending perpendicular to the extension direction of the concrete rib and a number of channel steel sections connecting the I-beams together. The I-beam includes an upper plate strip, a vertical plate strip and a lower plate strip connected in an "I" shape. The lower plate strip is placed flat on the concrete rib and cast together with the concrete rib. It has good structural strength and reliable connection.
[0007] Preferably, the opening directions of the two channel steel sections are opposite, the opening direction of the channel steel section is the horizontal direction, and the channel steel section is welded to the I-beam section.
[0008] Preferably, two rows of horizontally extending steel bars are cast in the concrete rib along the up-and-down direction. The horizontally extending steel bars in the same row of horizontally extending steel bars are distributed perpendicular to the extension direction of the rib, and the horizontally extending steel bars extend along the extension direction of the concrete rib. This can improve the structural strength.
[0009] Preferably, the horizontally extending steel bars in the upper and lower rows of horizontally extending steel bars are aligned one by one, and the aligned horizontally extending steel bars are connected together by a plurality of vertical steel bars, and the vertical steel bars are distributed along the extension direction of the concrete convex strips, so as to improve the structural strength.
[0010] Preferably, the horizontally extending steel bars in the same row of horizontally extending steel bars are connected together by a plurality of horizontal steel bars, the horizontal steel bars are distributed along the extending direction of the concrete convex strips, and the horizontally extending steel bars extend in a direction perpendicular to the concrete convex strips, so as to improve the structural strength.
[0011] Preferably, two vertical blocking pins are provided which penetrate the upper slats and are distributed at both ends of the length direction of the I-beam section, and the vertical blocking pins are used to prevent the steel beam placed on the steel support seat from falling down, thereby preventing the steel beam from falling down.
[0012] As a preference, it further comprises two return springs, the vertical blocking pins are telescopically arranged on the upper slats, the two return springs are used to drive the two vertical blocking rods to move downwards one by one until the upper ends of the vertical blocking rods are lower than the upper surface of the upper slats, the lower ends of the two vertical blocking pins are correspondingly placed on one end of the two seesaw rods, the other ends of the two seesaw rods are correspondingly supported on the lower ends of the two vertical trigger rods, the upper ends of the vertical trigger rods are arranged on the upper slats; when the steel support seat is in an empty state, the upper end of the vertical blocking pin is lower than the upper surface of the upper slats, and the upper end of the vertical trigger rod exceeds the upper surface of the upper slats. When the steel beam is not placed between the two vertical blocking pins, the vertical blocking pin is in a retracted avoidance state, so as to avoid interfering with the movement of the steel beam to the steel support seat, and when the steel beam moves into place, it squeezes the vertical trigger rod, so that the vertical blocking pin rises and plays a blocking role.
[0013] Preferably, the two vertical blocking rods are correspondingly arranged on the two channel steel sections, a guide block is arranged on the steel support seat, and the trigger rod is arranged in the guide block, so that the reliability during movement is good.
[0014] Beneficial effects: reliable support can be provided, and the supporting beam for hoisting the π-shaped steel-concrete composite beam can be conveniently installed. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a top view schematic diagram of the utility model;
[0016] Figure 2 for Figure 1 A schematic cross-sectional view of
[0017] Figure 3 for Figure 1 A longitudinal cross-sectional schematic diagram of
[0018] Figure 4Schematic diagram of the use state of the utility model;
[0019] Figure 5 Schematic diagram of the second embodiment of the utility model;
[0020] Figure 6 is Figure 5 Partial enlarged schematic diagram of part A of
[0021] In the figure: bridge deck 1, left steel beam 2, right steel beam 3, concrete hardened ground 4, concrete rib 5, steel support base 6, left mold support track 7, right mold support track 8, middle mold support track 9, avoidance groove 10, angle steel 11, I-beam section 12, channel steel section 13, upper plate bar 14, vertical plate bar 15, lower plate bar 16, horizontal extension steel bar 17, vertical steel bar 18, horizontal steel bar 19, vertical blocking pin 20, return spring 21, stop block 22, seesaw rod 23, hinge shaft 24, vertical trigger rod 25, guide block 26. Specific implementation manner
[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.
[0023] See Figures 1 to 4 , a support pedestal for the production of a π-shaped steel-concrete composite beam. The π-shaped steel-concrete composite beam includes a bridge deck 1 of a concrete structure and two steel beams connected to the lower surface of the bridge deck. The two steel beams are distributed in the transverse direction of the bridge and extend in the longitudinal direction of the bridge. The two steel beams are a left steel beam 2 and a right steel beam 3.
[0024] It includes a concrete hardened ground 4 and two concrete ribs 5 arranged on the concrete hardened ground. The two concrete ribs are parallel, and the distance between the left steel beam and the right steel beam is equal to the distance between the two concrete ribs. A number of steel support seats 6 distributed along the extending direction of the concrete rib are cast on the concrete rib. A left die support track 7 is provided on the left side of the two concrete ribs, and a right die support track 8 is provided on the right side. An intermediate die support track 9 is provided between the two concrete ribs. Avoidance grooves 10 are provided at both ends of the concrete rib, and the avoidance grooves are for the bottom beams of the π-shaped steel-concrete composite beam to pass through when being lifted. The avoidance grooves penetrate the concrete rib perpendicular to the extending direction of the concrete rib; the die for casting the bridge deck includes a left die, an intermediate die and a right die. When producing the π-shaped steel-concrete composite beam, the two steel beams are respectively supported on the steel support seats on the two concrete ribs, the left die is supported on the left die support track, the right die is supported on the right die support track, and the intermediate die is supported on the intermediate die support track. Then, concrete is cast in the die for casting the bridge deck to form the bridge deck.
[0025] Angle steels 11 are cast at the left and right edges of the upper end surface of the concrete rib as edge wraps. The steel support seat includes two I-beam sections 12 extending perpendicular to the extending direction of the concrete rib and a number of channel sections 13 connecting the I-beams together. The I-beam includes an upper plate strip 14, a vertical plate strip 15 and a lower plate strip 16 connected in an "I" shape. The lower plate strip is placed flat on the concrete rib and cast together with the concrete rib. The opening directions of the two channel sections are opposite, the opening direction of the channel section is the horizontal direction, and the channel section and the I-beam section are welded together.
[0026] Embodiment 2, the difference from Embodiment 1 is:
[0027] See Figure 5 and Figure 6 , two rows of horizontally extending steel bars 17 distributed in the up-and-down direction are cast in the concrete rib. The horizontally extending steel bars in the same row of horizontally extending steel bars are distributed perpendicular to the extending direction of the rib, and the horizontally extending steel bars extend along the extending direction of the concrete rib. The horizontally extending steel bars in the upper and lower two rows of horizontally extending steel bars are aligned one by one, and the horizontally extending steel bars that are vertically aligned are connected together by a number of vertical steel bars 18. The vertical steel bars are distributed along the extending direction of the concrete rib. The horizontally extending steel bars in the same row of horizontally extending steel bars are connected together by a number of horizontal steel bars 19. The horizontal steel bars are distributed along the extending direction of the concrete rib, and the horizontally extending steel bars extend perpendicular to the direction of the concrete rib.
[0028] It includes two vertical blocking pins 20 penetrating through the upper slat. The two vertical blocking pins are distributed at both ends of the I-beam section in the length direction. The vertical blocking pins are used to prevent the steel beam placed on the steel support seat from falling. The two vertical blocking rods are respectively inserted through the two channel steel sections. It also includes two return springs 21. The return springs are respectively sleeved on the two vertical blocking pins. The upper ends of the return springs are abutted against the channel steel sections, and the lower ends are abutted against the blocks 22 provided on the vertical blocking pins. The vertical blocking pins are telescopically inserted through the upper slat. The two return springs are used to respectively drive the two vertical blocking rods to move downward until the upper ends of the vertical blocking rods are lower than the upper surface of the upper slat. The lower ends of the two vertical blocking pins are respectively placed on two seesaw rods 23. The middle parts of the two seesaw rods are respectively hinged to the steel support seat through a hinge shaft 24. The other ends of the two seesaw rods are respectively supported on the lower ends of two vertical trigger rods 25. The upper ends of the vertical trigger rods are inserted through the upper slat. When the steel support seat is in the vacant state, the upper ends of the vertical blocking pins are lower than the upper surface of the upper slat, and the upper ends of the vertical trigger rods protrude beyond the upper surface of the upper slat. A guide block 26 is provided on the steel support seat, and the trigger rod is inserted through the guide block.
[0029] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the existence of additional identical elements in the process, method, article or device comprising the element.
[0030] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A support pedestal for the production of a π-shaped steel-concrete composite beam, wherein the π-shaped steel-concrete composite beam comprises a bridge deck of a concrete structure and two steel beams connected to the lower surface of the bridge deck, wherein the two steel beams are distributed in the transverse direction of the bridge and extend in the longitudinal direction of the bridge, and wherein: It includes a concrete hardened ground and two concrete convex strips arranged on the concrete hardened ground, the two concrete convex strips are parallel, the distance between the left steel beam and the right steel beam is equal to the distance between the two concrete convex strips, a number of steel support seats distributed along the extension direction of the concrete boss are cast on the concrete convex strips, a left mold support track is provided on the left side of the two concrete convex strips, and a right mold support track is provided on the right side, and a middle mold support track is provided between the two concrete convex strips, and avoidance grooves are provided at both ends of the concrete boss, the avoidance grooves are for the bottom supporting beam of the π-shaped steel-concrete composite beam to pass through, and the avoidance grooves pass through the concrete convex strips perpendicular to the extension direction of the concrete convex strips.
2. The support pedestal for producing π-shaped steel-concrete composite beams according to claim 1, characterized in that: Angle steels are cast on the left and right edges of the upper end surface of the concrete convex strip as edging.
3. The support pedestal for producing π-shaped steel-concrete composite beams according to claim 2, characterized in that: The steel support seat includes two I-beam sections extending perpendicularly to the extension direction of the concrete convex strip and a plurality of channel steel sections connecting the I-beams together. The I-beam includes an upper slat, a vertical slat and a lower slat connected together in an "I" shape. The lower slat is placed flat on the concrete convex strip and cast together with the concrete convex strip.
4. The support pedestal for producing π-shaped steel-concrete composite beams according to claim 3 is characterized in that: The opening directions of the two channel steel sections are opposite to each other, the opening direction of the channel steel section is horizontal, and the channel steel section and the I-beam section are welded together.
5. A support pedestal for producing π-shaped steel-concrete composite beams according to claim 1, 2, 3 or 4, characterized in that: Two rows of horizontally extending steel bars distributed in the up-and-down directions are cast in the concrete convex strips. The horizontally extending steel bars in the same row are distributed in a direction perpendicular to the extension direction of the boss, and the horizontally extending steel bars extend in the extension direction of the concrete convex strips.
6. The support pedestal for producing π-shaped steel-concrete composite beams according to claim 5, characterized in that: The horizontally extending steel bars in the upper and lower rows of horizontally extending steel bars are aligned one by one, and the upper and lower aligned horizontally extending steel bars are connected together by a plurality of vertical steel bars, and the vertical steel bars are distributed along the extension direction of the concrete convex strips.
7. The support pedestal for producing π-shaped steel-concrete composite beams according to claim 5, characterized in that: The horizontally extending steel bars in the same row of horizontally extending steel bars are connected together by a plurality of horizontal steel bars, the horizontal steel bars are distributed along the extending direction of the concrete convex strips, and the horizontally extending steel bars extend in a direction perpendicular to the concrete convex strips.
8. A support pedestal for producing π-shaped steel-concrete composite beams according to claim 3 or 4, characterized in that: It comprises two vertical blocking pins which penetrate the upper slats and are distributed at both ends of the length direction of the I-beam section. The vertical blocking pins are used to prevent the steel beam placed on the steel support seat from falling.
9. The support pedestal for producing π-shaped steel-concrete composite beams according to claim 8, characterized in that: It also includes two return springs, the vertical blocking pins are telescopically arranged on the upper slat, the two return springs are used to drive the two vertical blocking pins to move downward one by one until the upper ends of the vertical blocking pins are lower than the upper surface of the upper slat, the lower ends of the two vertical blocking pins are correspondingly rested on one end of the two seesaw rods, and the other ends of the two seesaw rods are correspondingly supported on the lower ends of two vertical trigger rods, and the upper ends of the vertical trigger rods are arranged on the upper slat; when the steel support seat is in an empty state, the upper ends of the vertical blocking pins are lower than the upper surface of the upper slat, and the upper ends of the vertical trigger rods exceed the upper surface of the upper slat.
10. A support pedestal for producing π-shaped steel-concrete composite beams according to claim 9, characterized in that: The two vertical blocking pins are correspondingly penetrated on the two channel steel sections, a guide block is arranged on the steel support seat, and the trigger rod is penetrated in the guide block.