CN114482532A

CN114482532A - Construction method of hollow guide groove structure in mass concrete

Info

Publication number: CN114482532A
Application number: CN202210064032.2A
Authority: CN
Inventors: 岳粹洲; 黄昌富; 姚铁军
Original assignee: China Railway 15th Bureau Group Co Ltd
Current assignee: China Railway 15th Bureau Group Co Ltd
Priority date: 2022-01-20
Filing date: 2022-01-20
Publication date: 2022-05-13
Anticipated expiration: 2042-01-20
Also published as: CN114482532B

Abstract

The invention discloses a construction method of a hollow guide groove structure in mass concrete, which comprises the following steps: manufacturing a hose and a support framework according to the size and the length of the guide groove; installing the hose at the designed position of the guide groove, supporting a support framework in the hose on the inner wall of the hose, sealing the hose and filling water or air in the hose; pouring concrete; and after the concrete is initially set, discharging water or air in the hose, and taking the support framework and the hose out of the concrete hole in sequence. The invention has the advantages that: can be freely lengthened, is convenient to pull out and has small disturbance to the concrete contact surface.

Description

Construction method of hollow guide groove structure in mass concrete

Technical Field

The invention relates to the technical field of guide groove construction, in particular to a construction method of a hollow guide groove structure in mass concrete.

Background

In the construction of various types of large-volume concrete structures, it is generally necessary to provide a hollow channel space in the concrete body in order to reduce the weight of the structure or to meet the requirements of the use. In the current work progress, pre-buried like PVC pipe fitting before concreting usually, if the space allows after the construction completion then can take out after the concrete initial set. However, the existing common practice not only increases the construction cost due to the inconvenient taking-out operation, but also easily damages the concrete contact surface in the taking-out process; and the factory lengths of various types of embedded pipe fittings are fixed, the applicability is poor, and the waste of cut-off materials is easily caused. Therefore, a construction method of a hollow guide channel structure inside mass concrete is required which can solve the above problems.

Disclosure of Invention

The invention aims to provide a construction method of a hollow guide groove structure in large-volume concrete according to the defects of the prior art, wherein a hose is arranged at the design position of the guide groove, a support framework in the hose is supported on the inner wall of the hose, the hose is sealed, and water or air is filled in the hose, so that the construction quality of the guide groove is ensured.

The purpose of the invention is realized by the following technical scheme:

a construction method of a hollow guide groove structure in mass concrete is characterized in that: the construction method comprises the following steps:

manufacturing a hose and a support framework according to the size and the length of the guide groove; installing the hose at the designed position of the guide groove, enabling a support framework in the hose to be supported on the inner wall of the hose, sealing the hose and filling water or air into the hose; pouring concrete; and after the concrete is initially set, discharging water or air in the hose, and sequentially taking the support framework and the hose out of the concrete hole.

The supporting framework comprises a supporting plate, an axis connecting rod and a supporting rod, wherein the two ends of the supporting rod are respectively connected with the supporting plate and the axis connecting rod, when the supporting framework is supported on the inner wall of the hose, the supporting plate is arranged along the circumferential direction of the inner wall of the hose, and the axis connecting rod is arranged on the longitudinal axis of the hose.

The axis connecting rod comprises two end rods and an intermediate rod, the intermediate rod is installed in the inner cavity of the end rod, and the length of the axis connecting rod is adjusted by moving in the inner cavity of the end rod through the intermediate rod.

Each supporting plate is connected with the axis connecting rod through two supporting rods, one end of each supporting rod is respectively connected with the two end rods through a rotating hinge in a rotating mode, the other end of each supporting rod is connected with the supporting plate through the same rotating hinge in a rotating mode, and a triangular structure is formed between the two supporting rods and the axis connecting rod.

And a corner limiting plate is arranged on the outer side of the upper supporting rod of the end rod.

The two ends of the axle center connecting rod are respectively provided with a connecting hole and a connecting hook, and the axle center connecting rod is connected through the connecting hole and the connecting hook in a matched mode.

The hoses are connected through threads.

The invention has the advantages that: can be freely lengthened, is convenient to pull out and has small disturbance to the concrete contact surface.

Drawings

FIG. 1 is a longitudinal cross-sectional view of the hose and support frame of the present invention in an installed condition;

FIG. 2 is a cross-sectional view of the hose and support frame of the present invention in an installed condition;

FIG. 3 is a schematic view of an axial center connecting rod according to the present invention;

FIG. 4 is a schematic view of a support frame according to the present invention.

Detailed Description

The features of the present invention and other related features are described in further detail below by way of example in conjunction with the following drawings to facilitate understanding by those skilled in the art:

as shown in FIGS. 1 to 4, the reference numerals 1 to 10 in the figures are respectively indicated as a hose 1, a supporting plate 2, an axis connecting rod 3, a supporting rod 4, an end rod 5, an intermediate rod 6, a rotating hinge 7, a corner limiting plate 8, a connecting hole 9 and a connecting hook 10.

Example (b): as shown in fig. 1 to 4, the present embodiment relates to a construction method of a hollow guide channel structure in bulk concrete, which mainly includes the following steps:

1. the hose 1 and the support frame are manufactured according to the size and length of the guide groove. In this embodiment, the hose 1 is made of a rubber material with a certain pressure resistance, and for the convenience of constructing guide grooves with different lengths, the pipe fitting can be formed by splicing a plurality of hoses 1 with the same length or different lengths through threaded connection, and of course, the pipe fitting can also be a long hose 1.

2. The hose 1 is installed at the designed position of the guide groove, the supporting framework in the hose 1 is supported on the inner wall of the hose 1, the hose 1 is sealed, and water or air is filled in the hose 1. Wherein, the supporting framework includes layer board 2, axle center connecting rod 3 and

bracing piece

4, 4 both ends of bracing piece are connected with layer board 2 and axle center connecting rod 3 respectively, when the supporting framework supports in 1 inner wall of hose, layer board 2 arranges along 1 inner wall circumferencial direction of hose, axle center connecting rod 3 sets up on the vertical axis of hose 1, in this embodiment, layer board 2 is the arc, and layer board 2's radian and 1 inner wall radian looks adaptation of hose, of course, when layer board 2 quantity is more, layer board 2 also can be square board, it can satisfy the support requirement equally. The axle center connecting rod 3 comprises two end rods 5 and an intermediate rod 6, the intermediate rod 6 is installed in an inner cavity of the end rod 5, the intermediate rod 6 can move in the inner cavity of one side end of the end rod 5, and the length of the axle center connecting rod 3 can be adjusted by controlling the length of the intermediate rod 6 extending out of the end rod 5, so that the supporting plate 2 is controlled to be close to or far away from the axle center connecting rod 3. Every layer board 2 all is connected with axle center connecting rod 3 through two spinal branch vaulting poles 4, and the one end of two spinal branch vaulting poles 4 all rotates with two tip poles 5 on the corresponding axle center connecting rod 3 respectively through a rotation hinge 7 and is connected, and the other end of two spinal branch vaulting poles 4 rotates with corresponding layer board 2 through same rotation hinge 7 and is connected. The mounting steps of the supporting framework are as follows: promote axle center connecting rod 3, make intermediate lever 6 remove toward the inner chamber of tip pole 5, two spinal branch vaulting poles 4 are close to gradually for the contained angle between two spinal branch vaulting poles 4 diminishes, and two spinal branch vaulting poles 4 hold up layer board 2 and move to the direction of keeping away from axle center connecting rod 3 simultaneously, support in the inner wall of hose 1 until layer board 2, and form triangular structure between two spinal branch vaulting poles 4 and axle center connecting rod 3, guarantee the steadiness of braced frame. An end rod 5 on the axis connecting rod 3 is provided with a corner limiting plate 8 outside the upper supporting rod 4 for controlling the maximum corner value of the supporting rod 4 and limiting the maximum movement to the direction vertical to the axis connecting rod 3. In addition, both ends of the axis connecting rod 3 are respectively provided with a connecting hole 9 and a connecting hook 10, the axis connecting rod 3 is connected by matching the connecting hole 9 and the connecting hook 10, after the end-to-end connection of the axis connecting rod 3 is completed, the two outermost end parts of the axis connecting rod are fixedly displaced, the total length of the axis connecting rod 3 is controlled to be fixed, and therefore the position of the supporting plate 2 can be fixed, wherein the connecting hook 10 is fixed inside the connecting hole 9 through binding, and the connection is firm.

3. And (5) pouring concrete.

4. After the concrete is initially set, water or air in the hose 1 is discharged, and the support framework and the hose 1 are taken out from the concrete hole in sequence. The taking-out step of the supporting framework comprises the following steps: pulling axle center connecting rod 3 makes intermediate lever 6 move toward the inner chamber of tip pole 5 outward, and two spinal branch vaulting poles 4 are kept away from gradually for the contained angle grow between two spinal branch vaulting poles 4, two spinal branch vaulting poles 4 drive layer board 2 simultaneously and are close to axle center connecting rod 3, make layer board 2 keep away from the inner wall of hose 1 gradually.

Although the conception and the embodiments of the present invention have been described in detail with reference to the drawings, those skilled in the art will recognize that various changes and modifications can be made therein without departing from the scope of the appended claims, and therefore, they are not to be considered repeated herein.

Claims

1. A construction method of a hollow guide groove structure in mass concrete is characterized in that: the construction method comprises the following steps:

2. The construction method of the hollow guide groove structure in the large-volume concrete according to claim 1, characterized in that: the supporting framework comprises a supporting plate, an axis connecting rod and a supporting rod, wherein the two ends of the supporting rod are respectively connected with the supporting plate and the axis connecting rod, when the supporting framework is supported on the inner wall of the hose, the supporting plate is arranged along the circumferential direction of the inner wall of the hose, and the axis connecting rod is arranged on the longitudinal axis of the hose.

3. The construction method of the hollow guide groove structure in the bulk concrete according to claim 2, wherein the construction method comprises the following steps: the axis connecting rod comprises two end rods and an intermediate rod, the intermediate rod is installed in the inner cavity of the end rod, and the length of the axis connecting rod is adjusted by moving in the inner cavity of the end rod through the intermediate rod.

4. The construction method of the hollow guide groove structure in the bulk concrete according to claim 3, wherein the construction method comprises the following steps: each supporting plate is connected with the axis connecting rod through two supporting rods, one end of each supporting rod is respectively connected with the two end rods through a rotating hinge in a rotating mode, the other end of each supporting rod is connected with the supporting plate through the same rotating hinge in a rotating mode, and a triangular structure is formed between the two supporting rods and the axis connecting rod.

5. The construction method of the hollow guide groove structure in the bulk concrete according to claim 4, wherein the construction method comprises the following steps: and a corner limiting plate is arranged on the outer side of the upper supporting rod of the end rod.

6. The construction method of the hollow guide groove structure in the large-volume concrete according to claim 2, characterized in that: the two ends of the axle center connecting rod are respectively provided with a connecting hole and a connecting hook, and the axle center connecting rod is connected through the connecting hole and the connecting hook in a matched mode.

7. The construction method of the hollow guide groove structure in the bulk concrete according to claim 1, wherein the construction method comprises the following steps: the hoses are connected through threads.