Enclosing purlin supporting system for temporary support in bearing platform construction

Abstract

The utility model provides an enclosing purlin support system for temporary support in bearing platform construction, which comprises L-shaped hanging plates, enclosing purlins and angle braces, the outer sides of the upper ends of the L-shaped hanging plates are provided with connecting structures used for being hung at the upper ends of steel sheet piles, at least three L-shaped hanging plates are hung on each row of steel sheet piles, the enclosing purlins are arranged along the arrangement direction of the steel sheet piles, and the angle braces are arranged on the L-shaped hanging plates. The enclosing purlins are arranged and clamped in the groove body structures at the lower ends of the at least three L-shaped hanging plates, and adjustable angle braces are arranged between the enclosing purlins on every two adjacent rows of steel sheet piles. The problems that disassembly and assembly are very inconvenient, the workload is large, the construction progress is affected, and construction resources are wasted in a traditional technology are solved. Belongs to the field of municipal engineering construction.

Description

Technical Field

[0001] The utility model relates to a purlin support system for temporary support during the construction of a bearing platform, belonging to the field of municipal engineering construction. Background Technique

[0002] At present, before the excavation of the bearing platform in the municipal road, within a range of 1 m outside the size of the bearing platform, steel sheet piles are driven as a temporary support structure for the construction of the bearing platform. After the bearing platform is excavated by 1 m, triangular gusset supports are welded on each row of steel sheet piles, and then the purlin is welded to the triangular gusset supports to bear the force. Angle braces are installed between adjacent two groups of purlins, and both ends of the angle braces are also welded and fixed to the purlins respectively, resulting in that the purlin support system needs to be repeatedly welded and cut during each use, the disassembly and assembly are very inconvenient, the workload is large, the construction progress is affected, and the construction resources are wasted. Once the welding quality is poor, the structural stability is seriously affected. Summary of the Invention

[0003] The utility model provides a purlin support system for temporary support during the construction of a bearing platform to solve the problems that the disassembly and assembly of the traditional process are very inconvenient, the workload is large, the construction progress is affected, and the construction resources are wasted.

[0004] To solve the above problems, a purlin support system for temporary support during the construction of a bearing platform is proposed, which includes an "L"-shaped hanging plate, a purlin and an angle brace. The outer side of the upper end of the "L"-shaped hanging plate has a connection structure for hanging on the upper end of the steel sheet pile. At least three "L"-shaped hanging plates are hung on each row of steel sheet piles. The purlin is arranged along the arrangement direction of the steel sheet piles, and the purlin is placed and clamped in the groove structures at the lower ends of the at least three "L"-shaped hanging plates. An adjustable angle brace is arranged between the purlins on adjacent two rows of steel sheet piles.

[0005] In the above-mentioned purlin support system, the angle brace includes a steel pipe, a lead screw and a connecting part. The steel pipe has an internal thread matching the external thread of the lead screw. One ends of two lead screws are respectively threadedly connected to both ends of the steel pipe, and the other ends of the two lead screws are respectively rotationally fixed to the purlins on adjacent two rows of steel sheet piles through the connecting part. By rotating the steel pipe, the connection length between the two lead screws and the steel pipe can be adjusted, so as to adjust the overall length of the angle brace.

[0006] In the above-mentioned purlin support system, the connecting part includes a pin shaft and two pin shaft plates. The pin shaft plates are arranged horizontally and welded and fixed to the corresponding purlins. The two pin shaft plates are vertically opposite and correspondingly provided with pin shaft holes. A pin hole is opened along a direction perpendicular to the length direction at the other end of the lead screw. The other end of the lead screw extends between the two pin shaft plates, and the pin shaft is vertically inserted into the pin shaft holes of the two pin shaft plates and the pin hole at the end of the lead screw, so as to realize the rotational connection between the end of the lead screw and the purlin.

[0007] In the above-mentioned waling support system, the connecting structure is an inverted "L"-shaped steel plate. The upper end of the connecting structure is welded and fixed to the outer side of the upper end of the "L"-shaped hanging plate, so as to form a downward-opening card slot between the connecting structure and the upper end of the "L"-shaped hanging plate. The upper end of the steel sheet pile is clamped through this card slot.

[0008] Compared with the prior art, the utility model realizes the convenient, fast disassembly and assembly of the waling support system by improving the hanging plate support fixture and the corner brace structure, effectively solves the problem that the waling support system in the traditional pile cap excavation support system needs to be repeatedly welded and cut every time it is used, greatly reduces the workload, effectively controls the installation, support and removal time of the waling, and compared with the steel pipe, H-shaped steel and other steel welding processes used in the conventional corner brace, about half a day of construction period can be saved for a single pile cap, which is beneficial to cost saving, construction progress acceleration, convenient disassembly and installation. At present, it has been successfully applied in the project. After actual engineering verification, it is suitable for popularization and application. Brief Description of the Drawings

[0009] Figure 1 is a schematic plan structure diagram of a corner of the temporary support for pile cap construction of the utility model;

[0010] Figure 2 is Figure 1 the sectional view taken along the line A-A in Detailed Description of the Embodiment

[0011] To make the purpose, technical solutions and advantages of the utility model clearer, the following will further elaborate on the utility model in conjunction with the drawings. It should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the utility model.

[0012] Embodiment

[0013] Referring to Figure 1 and Figure 2 , in this embodiment, the waling support system in the temporary support for pile cap construction is improved. The improved waling support system includes an "L"-shaped hanging plate 1, a waling 2 and a corner brace 3. The outer side of the upper end of the "L"-shaped hanging plate 1 has a connecting structure 11 for hanging on the upper end of the steel sheet pile 4. The connecting structure 11 is an inverted "L"-shaped steel plate. The upper end of the connecting structure 11 is welded and fixed to the outer side of the upper end of the "L"-shaped hanging plate 1, so as to form a downward-opening card slot between the connecting structure 11 and the upper end of the "L"-shaped hanging plate 1. The upper end of the steel sheet pile 4 is clamped through this card slot. At least three "L"-shaped hanging plates 1 are hung on each row of steel sheet piles 4. The waling 2 is arranged along the arrangement direction of the steel sheet piles 4, and the waling 2 is placed and clamped in the groove structures at the lower ends of the at least three "L"-shaped hanging plates 1. An adjustable corner brace 3 is arranged between the walings 2 on two adjacent rows of steel sheet piles 4.

[0014] The corner brace 3 includes a steel pipe 31, a lead screw 32 and a connecting part. The steel pipe 31 has an internal thread matching the external thread of the lead screw 32. One end of each of the two lead screws 32 is threadedly connected to both ends of the steel pipe 31 respectively. The other ends of the two lead screws 32 are respectively rotationally fixed to the waling 2 on two adjacent rows of sheet piles 4 through the connecting part. By rotating the steel pipe 31, the connection length between the two lead screws 32 and the steel pipe 31 can be adjusted, so as to adjust the overall length of the corner brace 3. The connecting part includes a pin shaft 33 and two pin shaft plates 34. The pin shaft plates 34 are arranged horizontally and welded and fixed to the corresponding waling 2. The two pin shaft plates 34 face each other vertically and are correspondingly provided with pin shaft holes. A pin hole is formed in the other end of the lead screw 32 along a direction perpendicular to the length direction. The other end of the lead screw 32 extends between the two pin shaft plates 34, and the pin shaft 33 is vertically inserted into the pin shaft holes of the two pin shaft plates 34 and the shaft hole at the end of the lead screw 32, so as to realize a rotational connection between the end of the lead screw 32 and the waling 2.

[0015] The specific technological process of this waling support system is as follows: Before the excavation of the inner bearing platform in the municipal road, within a range of 1 m outside the size of the bearing platform, sheet piles 4 are driven as a temporary support structure for the construction of the bearing platform. After the bearing platform is excavated by 1 m, at least 3 self-made "L"-shaped hanging plates 1 (the hanging plates are formed by welding steel bars with a thickness of 2 cm) are hung on each row of sheet piles 4 to replace the traditional welded triangular rib plate support frames. Subsequently, the waling 2 is placed on the "L"-shaped hanging plates 1 to bear the force. At a position 2.5 m away from the end of the waling, two pin shaft plates 34 with a thickness of 1 cm are welded. Finally, the corner brace is installed. The corner brace is formed by combining a steel pipe 31 with a length of 2 m and a diameter of 10 cm and two T-shaped adjusting lead screws with a length of 80 cm and a diameter of 6 cm. A pin hole with a diameter of 1.6 cm is arranged at the outer end of the lead screw 32. After adjusting the exposed length of the lead screw 32 in place according to the placement position of the waling on site, the whole corner brace is connected to the pin shaft plates 34 on the waling 2. Finally, a special pin shaft 33 is used to tightly fasten the lead screw 32 and the pin shaft plates 34 (ear plates) together to bear the force, and the fixation of the support system is completed. After the construction of the bearing platform is completed and the conditions for pulling out the sheet piles 4 are met, the corner brace is removed, the waling 2 is hoisted out, the "L"-shaped hanging plates 1 are taken out and reused for the next bearing platform.

[0016] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A purlin support system for temporary support of cap construction, characterized by: The invention comprises an "L"-shaped hanging plate (1), a purlin (2) and a corner brace (3); the outer side of the upper end of the "L"-shaped hanging plate (1) is provided with a connection structure (11) for hanging on the upper end of a steel sheet pile (4); at least three "L"-shaped hanging plates (1) are hung on each row of steel sheet piles (4); the purlin (2) is arranged along the arrangement direction of the steel sheet piles (4); the purlin (2) is arranged and clamped in a groove structure at the lower end of the at least three "L"-shaped hanging plates (1); and an adjustable corner brace (3) is arranged between the purlins (2) on two adjacent rows of steel sheet piles (4).

2. A purlin support system for temporary support of cap construction according to claim 1, characterized in that: The angle brace (3) comprises a steel pipe (31), a screw rod (32) and a connecting portion, wherein the steel pipe (31) has an internal thread matching the external thread of the screw rod (32), one end of the two screw rods (32) are respectively threadedly connected to the two ends of the steel pipe (31), and the other ends of the two screw rods (32) are respectively rotatably fixed to the surrounding purlins (2) on two adjacent rows of steel sheet piles (4) through the connecting portion.

3. A purlin support system for temporary support of cap construction according to claim 2, characterized in that: The connecting part comprises a pin shaft (33) and two pin shaft plates (34). The pin shaft plates (34) are horizontally arranged and welded to the corresponding surrounding purlin (2). The two pin shaft plates (34) are vertically opposite and correspondingly provided with pin shaft holes. The other end of the screw rod (32) is provided with a pin hole perpendicular to the length direction. The other end of the screw rod (32) extends between the two pin shaft plates (34). The pin shaft (33) is vertically penetrated in the pin shaft holes of the two pin shaft plates (34) and the shaft hole at the end of the screw rod (32), so that the end of the screw rod (32) and the surrounding purlin (2) are rotatably connected.

4. The purlin support system for temporary support of platform construction according to claim 1 is characterized in that: The connecting structure (11) is an inverted "L"-shaped steel plate. The upper end of the connecting structure (11) is welded and fixed to the outer side of the upper end of the "L"-shaped hanging plate (1), so that a slot with an opening facing downward is formed between the connecting structure (11) and the upper end of the "L"-shaped hanging plate (1), and the upper end of the steel sheet pile (4) is clamped through the slot.

Images