Construction method of aqueduct

Abstract

The invention provides an aqueduct construction method. The aqueduct construction method comprises the following steps that S1, an aqueduct is divided into a straight line section and a curve section; s2, calculating a central angle alpha of the second groove body; s3, dividing the straight line segment into a first straight line segment and a second straight line segment; a prefabricated groove field is built on the first straight line section; s4, supports are installed at the tops of the cushion blocks of the two adjacent pier columns, then a groove body left end mold, a groove body right end mold and a groove body mold plate of a first groove body are installed, prefabrication of the first groove body is conducted, and all prefabrication of the first groove body and assembly construction of a second straight line section are completed; s5, clockwise rotating the left end mold of the groove body by 0.5 alpha, anticlockwise rotating the right end mold by 0.5 alpha, adaptively moving and adjusting top supports of two adjacent pier columns in the longitudinal groove direction, mounting a groove body mold plate of a second groove body, and then completely prefabricating the second groove body and assembling and constructing a curved section; and S6, assembling construction of the first straight line section is completed. The construction efficiency of aqueduct construction is improved.

Description

Technical Field

[0001] The invention relates to the technical field of aqueduct construction, and in particular to a construction method of an aqueduct. Background Art

[0002] At present, the main construction methods used for aqueducts include floor-type support construction method, prefabricated frame construction method and slot making machine construction method. The floor-type support construction method occupies a large area, has slow construction, requires separate foundation treatment and the investment of materials and equipment such as floor-type supports, and has high construction costs. The prefabricated frame construction method requires the construction of a separate prefabricated trough site, which requires the investment of other equipment, etc., and has high construction costs. The slot making machine construction method has the advantages of convenient construction, small footprint and turnover, and is widely used. However, the existing slot making machine construction method cannot meet the construction requirements of the curved section of the aqueduct, and its use is subject to certain restrictions. Therefore, the existing aqueduct construction has the disadvantage of a long construction period. Summary of the invention

[0003] The object of the present invention is to provide a method for constructing an aqueduct to improve the construction efficiency of the aqueduct.

[0004] In order to achieve the above object, the technical solution adopted by the present invention is:

[0005] A construction method for an aqueduct comprises the following steps:

[0006] S1: dividing the aqueduct into a straight segment and a curved segment, wherein the straight segment includes a plurality of first trough bodies, and the curved segment includes a plurality of second trough bodies, and the longitudinal length of the first trough body is equal to the longitudinal length of the second trough body;

[0007] S2: Calculate the center angle α of the second groove body;

[0008] S3: Divide the straight line segment into a first straight line segment and a second straight line segment, wherein the first straight line segment includes two or three connected first trough bodies, and the second straight line segment includes a plurality of first trough bodies; set up a prefabricated trough yard on the first straight line segment, firstly carry out pier construction of the first straight line segment, adaptively widen the pads on the top of the piers along the longitudinal direction of the aqueduct, and then install a trough making machine on the top of the piers;

[0009] S4: Install the support on the top of the pads of the two adjacent piers, then install the left end mold and the right end mold of the trough body and the trough body template of the first trough body, and then prefabricate the first trough body, completing the entire prefabrication of the first trough body and the assembly construction of the second straight segment;

[0010] S5: Rotate the left end mold of the trough body clockwise by 0.5α and the right end mold counterclockwise by 0.5α, adaptively move and adjust the top supports of the two adjacent piers along the longitudinal trough direction, install the trough body template of the second trough body, and then carry out the prefabrication of the second trough body and the assembly construction of the curved section;

[0011] S6: Complete the assembly construction of the first straight line segment.

[0012] Furthermore, in step S2, the central angle α of the second groove body is calculated using the following formula:

[0013]

[0014] Wherein L3 is the length of the second groove body, and R is the curvature radius of the second groove body.

[0015] Further, in step S3, the first straight segment includes three connected first trough bodies, and the piers include a first pier, a second pier, a third pier and a fourth pier arranged in sequence from left to right, and the trough making machine is installed on the top of the first pier, the second pier, the third pier and the fourth pier.

[0016] Further, in step S3, a first front pad and a first rear pad are provided at the top of the second pier column, and a second front pad and a second rear pad are provided at the top of the third pier column.

[0017] Further, the first front pad and the second rear pad are widened to the left by L4, and the first rear pad and the second front pad are widened to the right by L4.

[0018] Further, in step S4, a first front support and a first rear support are installed on the top of the second pier column, and a second front support and a second rear support are installed on the top of the third pier column.

[0019] Further, in step S5, the first front support and the second rear support are moved to the left by L5; the first rear support and the second front support are moved to the right by L5.

[0020] Furthermore, in step S5, the second trough body is cast by a trough making machine, which is positioned on the first straight segment. A concrete tank truck transports concrete and unloads it at the hopper of the trough making machine. The gantry crane then transports the concrete to the trough making machine for casting, which is then maintained and disassembled after the second trough body reaches the designed strength.

[0021] Furthermore, in step S5, after the concrete of the second trough body reaches the designed strength, the second trough body is unloaded from the pier by the truck crane and placed on the beam transport vehicle; the beam transport vehicle carries the second trough body to the installation position of the prefabricated trough body of the curved section of the aqueduct; finally, the prefabricated trough body of the curved section aqueduct is installed, the truck crane is in place, the second trough body on the beam transport vehicle is lifted and installed to the position of the trough body of the curved section of the aqueduct.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] (a) The present invention solves the problem that the existing trough making machine construction method cannot meet the construction requirements of the curved section of the aqueduct, and improves the application scope of the trough making machine construction method.

[0024] (ii) The present invention has the advantages of being fast and efficient, safe and stable, and easy to operate. In addition, the equipment required for this method is simple and low in cost. There is no need to acquire additional land to prefabricate the curved trough body, nor is there any need to invest in additional equipment and materials to cast the curved trough body. The method makes full use of the trough making machine and has obvious superiority and advancement in the prefabrication and installation of many curved sections of aqueducts. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the process of the present invention;

[0026] Figure 2 A schematic diagram of a groove making machine casting a straight groove body in one embodiment of the present invention;

[0027] Figure 3 It is a schematic diagram of unloading and loading a straight-line tank body in one embodiment of the present invention;

[0028] Figure 4 It is a schematic diagram of the installation of the curved section trough body in one embodiment of the present invention;

[0029] Figure 5 A plan view of a straight line segment in one embodiment of the present invention;

[0030] Figure 6 A plan view of a curved line segment in one embodiment of the present invention;

[0031] Figure 7 This is a schematic diagram of the arrangement of the pads and supports when prefabricating the first tank body in one embodiment of the present invention (when the pads are not widened);

[0032] Figure 8 It is a schematic diagram of the arrangement of the pads and supports when prefabricating the second tank body in one embodiment of the present invention (after the pads are widened).

[0033] In the figure:

[0034] 1. First trough body; 2. Second trough body; 3. First pier; 4. Second pier; 5. Third pier; 6. Fourth pier; 7. First front pad; 8. First rear pad; 9. Second front pad; 10. Second rear pad; 11. First front support; 12. First rear support; 13. Second front support; 14. Second rear support; 15. trough making machine; 16. trough body formwork; 17. Concrete tank truck; 18. trough making machine hopper; 19. Gantry crane; 20. Truck crane; 21. Beam transporter; 22. Pad widening part; L1. Longitudinal length of first trough body; L2. Longitudinal length of second trough body; L3. Length of second trough body; L4. Widening length of pad; L5. Moving length of support; R. Curvature radius of second trough body. DETAILED DESCRIPTION

[0035] The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments. It should be noted that the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict. For the convenience of description, if the words "upper", "lower", "left" and "right" appear in the following, they only indicate that the upper, lower, left and right directions are consistent with the drawings themselves, and do not limit the structure.

[0036] like Figure 1-Figure 7 As shown, this embodiment provides a construction method of an aqueduct, comprising the following steps:

[0037] S1: The aqueduct is divided into a straight segment and a curved segment, wherein the straight segment includes a plurality of first trough bodies 1, and the curved segment includes a plurality of second trough bodies 2.

[0038] like Figure 7 and Figure 8 As shown, in this embodiment, the longitudinal length L1 of the first groove body 1 is equal to the longitudinal length L2 of the second groove body. The longitudinal length of the groove body is the distance between the centers of the two ends of the groove body.

[0039] S2: Calculate the center angle α of the second groove body.

[0040] S3: Divide the straight segment into a first straight segment and a second straight segment. In the present embodiment, the first straight segment includes three first trough bodies 1, and the second straight segment includes multiple first trough bodies 1. Set up a prefabricated trough yard on the first straight segment, first carry out the pier construction of the first straight segment, adaptively widen the pads on the top of the piers along the longitudinal direction of the aqueduct, and then install a trough making machine on the top of the piers.

[0041] S4: Install the support on the top of the pad of the two adjacent piers, then install the left end mold, the right end mold and the groove body template 16 of the first groove body, and then prefabricate the first groove body 1, completing the entire prefabrication of the first groove body 1 and the assembly construction of the second straight segment.

[0042] S5: Rotate the left end mold of the trough body clockwise by 0.5α and the right end mold counterclockwise by 0.5α, adaptively move and adjust the top supports of the two adjacent piers along the longitudinal trough direction, install the trough body template 12 of the second trough body 2, and then carry out the complete prefabrication of the second trough body 2 and the assembly construction of the curved section.

[0043] S6: Complete the assembly construction of the first straight line segment.

[0044] In this embodiment, in step S2, the central angle α of the second groove body 2 is calculated using the following formula:

[0045]

[0046] Wherein L3 is the length of the second groove body, R is the curvature radius of the second groove body, and L3 and the curvature radius R are obtained according to the design drawing.

[0047] like Figure 2 As shown, in this embodiment, in step S3, the first straight segment includes three connected first trough bodies 1, and the piers include a first pier 3, a second pier 4, a third pier 5 and a fourth pier 6 arranged from left to right, and the trough making machine 15 is installed on the top of the first pier 3, the second pier 4, the third pier 5 and the fourth pier 6.

[0048] In this embodiment, in step S3, the top of the second pier 4 is provided with a first front pad 7 and a first rear pad 8, and the top of the third pier 5 is provided with a second front pad 9 and a second rear pad 10. The first front pad 7 and the second rear pad 10 are widened to the left by L4, and the first rear pad 8 and the second front pad 9 are widened to the right by L4.

[0049] In this embodiment, the first front support 11 and the first rear support 12 are installed on the top of the second pier 4, and the second front support 13 and the second rear support 14 are installed on the top of the third pier 5. In step S5, the first front support 11 and the second rear support 14 are moved to the left by L5; the first rear support 12 and the second front support 13 are moved to the right by L5, and L5≥btanα.

[0050] In this embodiment, in step S5, the second trough body 2 is cast by a trough making machine 15, the trough making machine 15 is in place on the first straight section, the concrete tank truck 17 transports concrete and unloads it at the trough making machine hopper 18, and then the gantry crane 19 transports the concrete to the trough making machine for casting, and then it is cured and disassembled after the second trough body 2 reaches the designed strength.

[0051] In this embodiment, in step S5, after the concrete of the second trough body 2 reaches the designed strength, the second trough body 2 is unloaded from the pier by the truck crane 20 and placed on the beam transport vehicle 21; the beam transport vehicle 21 carries the second trough body 2 to the installation position of the prefabricated trough body of the curved section of the aqueduct; finally, the prefabricated trough body of the curved section aqueduct is installed, the truck crane 20 is in place, and the second trough body on the beam transport vehicle 21 is lifted and installed to the position of the trough body of the curved section of the aqueduct.

[0052] In this embodiment, the length of the first trough body and the second trough body is 15m, and the trough making machine adopts a 15m integrated trough making machine. The concrete volume of the 15m trough body in this example is 21m 3 , using commercial concrete, 10m 3 Concrete tank trucks are used for feeding. In this embodiment, two 130t truck cranes are used for lifting and 21 three-axle beam transporting gun carriages are used for transportation.

[0053] The aqueduct construction method of the present invention makes full use of the channel making machine in the casting construction of the aqueduct body, and combines it with the prefabricated frame installation method, which not only meets the needs of safe and fast channel making with straightness of the aqueduct, but also meets the needs of installation of the curved section channel body. Especially for the construction of aqueducts with high piers, the construction efficiency will be greatly improved.

[0054] The contents explained in the above embodiments should be understood as these embodiments are only used to more clearly illustrate the present invention, and are not used to limit the scope of the present invention. After reading the present invention, various equivalent forms of modifications to the embodiments made by those skilled in the art fall within the scope defined by the claims attached to the present invention.

Claims

1. A method for constructing an aqueduct, characterized in that: The steps include: S1: the aqueduct is divided into a straight segment and a curved segment, the straight segment includes a plurality of first trough bodies (1), the curved segment includes a plurality of second trough bodies (2), the longitudinal length (L1) of the first trough body (1) is equal to the longitudinal length (L2) of the second trough body (2); S2: Calculate the center angle α of the second groove body (2); S3: dividing the straight line segment into a first straight line segment and a second straight line segment, the first straight line segment comprising two or three connected first trough bodies (1), and the second straight line segment comprising a plurality of first trough bodies (1); setting up a prefabricated trough yard on the first straight line segment, firstly carrying out pier construction of the first straight line segment, adaptively widening the pads on the top of the piers along the longitudinal direction of the aqueduct, and then installing a trough making machine (15) on the top of the piers; S4: installing a support on the top of the pads of the two adjacent piers, then installing the left end mold and the right end mold of the trough body and the trough body template (16) of the first trough body, and then prefabricating the first trough body (1), completing the entire prefabrication of the first trough body (1) and the assembly construction of the second straight section; S5: Rotate the left end mold of the trough body clockwise by 0.5α and the right end mold counterclockwise by 0.5α, adaptively move and adjust the top supports of two adjacent piers along the longitudinal direction of the trough, install the trough body template (16) of the second trough body (2), and then perform the entire prefabrication of the second trough body (2) and the assembly construction of the curved section; S6: Complete the assembly construction of the first straight line segment.

2. The construction method of an aqueduct according to claim 1, characterized in that: In step S2, the central angle α of the second groove body (2) is calculated using the following formula: Wherein L3 is the length of the second groove body, and R is the curvature radius of the second groove body.

3. The construction method of an aqueduct according to claim 1, characterized in that: In step S3, the first straight line segment includes three connected first groove bodies, and the piers include a first pier (3), a second pier (4), a third pier (5) and a fourth pier (6) arranged in sequence from left to right, and the groove making machine (15) is installed on the top of the first pier (3), the second pier (4), the third pier (5) and the fourth pier (6).

4. The construction method of an aqueduct according to claim 3, characterized in that: In step S3, a first front pad (7) and a first rear pad (8) are provided at the top of the second pier column (4), and a second front pad (9) and a second rear pad (10) are provided at the top of the third pier column (5).

5. The construction method of an aqueduct according to claim 4, characterized in that: The first front pad (7) and the second rear pad (10) are widened to the left by L4, and the first rear pad (8) and the second front pad (9) are widened to the right by L4, 6. The construction method of an aqueduct according to claim 3, characterized in that: In step S4, a first front support (11) and a first rear support (12) are installed on the top of the second pier (4), and a second front support (13) and a second rear support (14) are installed on the top of the third pier (5).

7. The construction method of an aqueduct according to claim 6, characterized in that: In step S5, the first front support (11) and the second rear support (14) are moved to the left by L5; the first rear support (12) and the second front support (13) are moved to the right by L5.

8. The method for constructing an aqueduct according to claim 1, characterized in that: In step S5, the second trough body (2) is cast by a trough making machine (15). The trough making machine (15) is positioned on the first straight section. The concrete tank truck (17) transports concrete and unloads it at the trough making machine hopper (18). The gantry crane (19) then transports the concrete to the trough making machine for casting. The concrete is then cured and disassembled after the second trough body (2) reaches the designed strength.

9. The construction method of an aqueduct according to claim 8, characterized in that: In step S5, after the concrete of the second trough body (2) reaches the designed strength, the second trough body (2) is unloaded from the pier by the truck crane (20) and placed on the beam transport vehicle (21); the beam transport vehicle (21) carries the second trough body (2) to the installation position of the prefabricated trough body of the curved section of the aqueduct; finally, the prefabricated trough body of the curved section of the aqueduct is installed, the truck crane (20) is in place, the second trough body on the beam transport vehicle (21) is lifted and installed to the position of the trough body of the curved section of the aqueduct.

Images