Inclined column formwork supporting frame for cast-in-place of concrete beam

Abstract

The utility model discloses an inclined column template support frame for cast-in-place of a concrete beam, which is characterized in that a vertical steel pipe upright post and an inclined steel pipe upright post are fixedly arranged on a bearing platform by utilizing bearing platform anchor bolts, and the vertical steel pipe upright post and the inclined steel pipe upright post are pulled into a whole by a horizontal pull rod along the direction of a bridge; the inclined steel pipe stand columns at the corresponding positions in the single span are connected into a whole through corner connectors and horizontal cross rods. The unloading blocks are arranged on the top faces of the vertical steel pipe stand columns and the top faces of the corner connectors respectively. A bearing beam is placed on the top face of the unloading block in the transverse bridge direction, a bailey beam is arranged on the top face of the bearing beam in the bridge direction, a distribution beam is placed on the top face of the bailey beam in the transverse bridge direction, and the batter post formwork supporting frame for concrete beam cast-in-place is formed. The bearing platform is fully used as a supporting point, the inclined steel pipe stand columns are arranged to share the upper load, a strip-shaped foundation does not need to be additionally arranged, construction cost is saved, the spanning capacity of the support is greatly improved, and the support is a preferable scheme for spanning rivers, roads and bridge sites in a large-span mode when the geological environment is poor.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of bridge superstructure concrete beam construction, more specifically to a concrete beam cast-in-situ inclined column formwork support frame. BACKGROUND

[0002] When the road or river channel below the bridge has high traffic level, and it is impossible to set temporary support piers in the middle of the road or river channel or cross the important existing building (structure) below the bridge, one-span formwork support frame needs to be used to solve the construction and traffic, river channel navigation and other construction interference problems, the traditional steel pipe column combined with single-layer bailey beam structure beam-column type formwork support frame has a span of only about 15m, which cannot meet the construction requirements of large-span formwork support frame over 20m and above, and when the steel pipe column combined with double-layer bailey beam structure beam-column type formwork support frame is used, the span of the formwork support frame is increased, but the double-layer bailey beam reduces the traffic or navigation clearance, causing the limitation of the passing capacity. It can be seen that when the concrete beam cast-in-situ construction needs to cross large-section obstacles, the traditional beam-column type formwork support frame has certain technical defects. SUMMARY

[0003] The utility model discloses in order to avoid the insufficient of prior art, utilize the basic theory of structure geometry invariant system and axial compression stability, provide a concrete beam cast-in-situ inclined column formwork support frame, realize large-span crossing high-grade road, river channel or existing building (structure), and the cross section of formwork support frame is big, and the crossing capacity is strong, and the economic condition is applicable to the poor bridge site geological condition, and the temporary support pier needs not to be set up in other positions outside the pile cap, and the construction cost is saved.

[0004] The utility model discloses a concrete beam cast-in-situ inclined column formwork support frame, which realizes large-span crossing high-grade road, river channel or existing building (structure), and the cross section of formwork support frame is big, and the crossing capacity is strong, and the economic condition is applicable to the poor bridge site geological condition, and the temporary support pier needs not to be set up in other positions outside the pile cap, and the construction cost is saved.

[0005] The utility model discloses a concrete beam cast-in-situ inclined column formwork support frame, which realizes large-span crossing high-grade road, river channel or existing building (structure), and the cross section of formwork support frame is big, and the crossing capacity is strong, and the economic condition is applicable to the poor bridge site geological condition, and the temporary support pier needs not to be set up in other positions outside the pile cap, and the construction cost is saved.

[0006] The structure features of the inclined column formwork support frame for the cast-in-situ concrete beam of the utility model also lie in that: the vertical steel pipe column and the pier body anchor bolt are connected into a whole through the connecting wall piece; the adjacent vertical steel pipe columns in the transverse bridge direction are connected into a whole through the connecting system; and the adjacent inclined steel pipe columns in the transverse bridge direction are connected into a whole through the connecting system.

[0007] The structure features of the inclined column formwork support frame for the cast-in-situ concrete beam of the utility model also lie in that: the top surface of the corner joint is provided with a plane for placing the unloading block.

[0008] The structure features of the inclined column formwork support frame for the cast-in-situ concrete beam of the utility model also lie in that: the steel pipe column is connected by flange bolt assembly type connection through each modular segment; the inclined steel pipe column and the corner joint, and the corner joint and the horizontal cross bar are all connected by flange bolt assembly type connection; and the connecting wall piece and the vertical steel pipe column, the connecting system and the steel pipe column, and the pull rod and the steel pipe column are all connected by pin shaft (16) assembly type connection.

[0009] The structure features of the inclined column formwork support frame for the cast-in-situ concrete beam of the utility model also lie in that: the connecting system is in the shape of "N" and is formed by groove steel assembly welding; and the pull rod is made of steel pipe and is provided with connecting ear plates at both ends.

[0010] Compared with the prior art, the utility model has the beneficial effects that:

[0011] 1. The utility model uses the bearing platform as the support point of the formwork support frame, does not need to set up temporary buttress at other positions outside the bearing platform, is suitable for the cast-in-situ construction of the concrete beam under the conditions of poor bridge site environment geological conditions and high foundation treatment cost.

[0012] 2. The utility model sets up the inclined steel pipe column, increases the bearing support point of the bailey beam, shares the weight and construction load of the upper concrete beam, greatly improves the span and cross section of the support frame, and provides an optimal technical scheme for crossing the river, road and existing building (structure) under special working conditions. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is the front view structural schematic diagram of the utility model;

[0014] Figure 2 It is the side view structural schematic diagram of the utility model;

[0015] The following are the labels in the diagram: 1. Pier cap, 2. Pier body, 3. Anchor bolt, 4. Vertical steel pipe column, 5. Diagonal steel pipe column, 6. Tie rod, 7. Corner joint, 8. Horizontal crossbar, 9. Unloading block, 10. Load-bearing beam, 11. Bailey beam, 12. Distribution beam, 13. Wall tie, 14. Connection system, 15. Flange bolt, 16. Pin, 17. Concrete beam. Detailed Implementation

[0016] See Figure 1 and Figure 2 In this embodiment, the structure of the inclined column formwork support frame for cast-in-place concrete beams is as follows: anchor bolts 3 are pre-embedded at the designated positions of the pier cap 1 and the pier body 2, namely the pier cap anchor bolts and the pier body anchor bolts. Steel pipe columns are fixedly installed on the pier cap 1 using the pier cap anchor bolts, namely the vertical steel pipe column 4 and the inclined steel pipe column 5. The vertical steel pipe column 4 and the inclined steel pipe column 5 are connected into a whole along the bridge direction by the horizontal tie rod 6. The inclined steel pipe columns 5 at corresponding positions within a single span are connected into a whole by the corner joint 7 and the horizontal crossbar 8. The unloading blocks 9 are placed on the top surface of the vertical steel pipe column 4 and the top surface of the corner joint 7. The load-bearing beam 10 is placed in the transverse direction of the bridge on the top surface of the unloading block 9. The Bailey beam 11 is set in the transverse direction of the bridge on the top surface of the load-bearing beam 10. The distribution beam 12 is placed in the transverse direction of the bridge on the top surface of the Bailey beam 11, thus forming the inclined column formwork support frame for cast-in-place concrete beams 17.

[0017] The corresponding technical measures in this embodiment also include:

[0018] To enhance the overall stability of the formwork support frame, the vertical steel pipe column 4 and the anchor bolts of the pier body are connected as a whole by wall ties 13. Figure 1 As shown); the adjacent vertical steel pipe columns 4 in the horizontal direction are connected into a whole by the connecting system 14. Figure 2 (As shown); the adjacent diagonal steel pipe columns 5 in the transverse direction are connected into a whole by a connecting system.

[0019] The corner joint 7 is equipped with connecting flanges at both ends, so that the corner joint 7 matches the inclination angle of the inclined steel pipe column 5 at one end and matches the horizontal crossbar 8 at the other end, realizing the transition between the inclined steel pipe column 5 and the horizontal crossbar 8. The top surface of the corner joint 7 is set as a plane for placing the unloading block 9. Figure 1 (As shown).

[0020] For ease of installation and dismantling, the steel pipe columns are assembled from modular segments using flange bolts; the inclined steel pipe columns 5 and the corner joints 7, as well as the corner joints 7 and the horizontal crossbars 8, are all assembled using flange bolts; the wall ties 13 and the vertical steel pipe columns 4, the connecting system 14 and the steel pipe columns, and the tie rods 6 and the steel pipe columns are all assembled using pins 16.

[0021] The connecting system 14 is in the shape of "N" and is made by welding channel steel; the pull rod 6 is made of steel pipe and has connecting ear plates at both ends.

[0022] To ensure the safety of the template support frame, the load bearing capacity and the unloading amount of the unloading block 9 should be selected in combination with the stress size and the demolition requirements and considering a certain safety factor.

[0023] In the specific implementation, the anchor bolt 3 is pre-buried at the set position when the pile cap 1 and the pier body 2 are constructed, the vertical steel pipe column 4 and the inclined steel pipe column 5 are pre-assembled into the required length on the ground, the vertical steel pipe column 4 and the inclined steel pipe column 5 are hoisted and installed on the pile cap anchor bolt by using hoisting equipment, the pull rod 6 between the vertical steel pipe column 4 and the inclined steel pipe column 5 is installed synchronously, the corner joint 7 is installed at the top of the inclined steel pipe column 5, and finally the horizontal cross bar 8 is installed between the two corner joints 7, thereby connecting the inclined steel pipe column 5 into a whole.

[0024] The template support frame is sequentially erected by using hoisting equipment in the order from bottom to top, the auxiliary rod members such as the connecting wall member 13, the connecting system 14 and the pull rod 6 are timely installed in the erection process to prevent the risk of overturning of the components, the safety protection measures should be well prepared for the hoisting operation and the overhead operation, after the erection of the template support frame is completed, the pre-pressing should be performed according to the requirements of the specification, and the in-situ concrete beam construction can be performed after the pre-pressing is qualified. Before the template support frame is dismantled, the pre-pressing block 9 is unloaded, and the rod members of the template support frame are sequentially dismantled from top to bottom, involving the rod members such as the inclined steel pipe column 5, the corner joint 7 and the horizontal cross bar 8, the anti-falling and anti-overturning measures should be supplemented in the dismantling process to ensure the safety of the template support frame in the erection and dismantling process.

Claims

1. A formwork support frame for a sloping column of a cast-in-situ concrete beam, characterized in that: in The bearing platform (1) and the pier body (2) are respectively embedded with anchor bolts at the set positions, which are bearing platform anchor bolts and pier body anchor bolts, and the steel pipe columns are fixed and installed on the bearing platform (1) by the bearing platform anchor bolts, which are vertical steel pipe columns (4) and inclined steel pipe columns (5), the vertical steel pipe columns (4) and the inclined steel pipe columns (5) are pulled together into a whole by horizontal pull rods (6) along the bridge direction, and the inclined steel pipe columns (5) at corresponding positions in the single span are connected into a whole by corner joints (7) and horizontal cross bars (8); the unloading blocks (9) are separately arranged on the top surface of the vertical steel pipe columns (4) and the top surface of the corner joints (7); the load-bearing beams (10) are arranged on the top surface of the unloading blocks (9) along the bridge direction, the bailey beams (11) are arranged on the top surface of the load-bearing beams (10) along the bridge direction, and the distribution beams (12) are arranged on the top surface of the bailey beams (11) along the bridge direction, thereby forming a concrete beam cast-in-place inclined column formwork support frame.

2. The sloping column formwork support frame for cast-in-situ concrete beam according to claim 1, characterized in that The vertical steel pipe columns (4) and the pier body anchor bolts are connected into a whole by wall connecting pieces (13), the adjacent vertical steel pipe columns (4) are connected into a whole by connecting systems along the bridge direction, and the adjacent inclined steel pipe columns (5) are connected into a whole by connecting systems along the bridge direction.

3. The sloping column formwork support frame for cast-in-situ concrete beam according to claim 1, characterized in that: The corner joints (7) match the inclination angles of the inclined steel pipe columns (5) at one end and match the horizontal cross bars (8) at the other end, thereby realizing the connection between the inclined steel pipe columns (5) and the horizontal cross bars (8), and the top surface of the corner joints (7) is arranged as a plane for placing the unloading blocks (9).

4. The sloping column formwork support frame for cast-in-situ concrete beam according to claim 1, characterized in that: The steel pipe columns are connected by flange bolt assembly of each modular segment, the inclined steel pipe columns (5) and the corner joints (7) and the horizontal cross bars (8) are connected by flange bolt assembly, and the wall connecting pieces (13) and the vertical steel pipe columns (4), the connecting systems (14) and the steel pipe columns, and the pull rods (6) and the steel pipe columns are connected by pin shaft (16) assembly.

5. The inclined column formwork support frame for cast-in-place concrete beams according to claim 1, characterized in that: connecting... The connecting systems (14) are in the shape of "N" and are made of channel steel by welding, and the pull rods (6) are made of steel pipes and are provided with connecting lug plates at both ends.

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