CN-117552347-B - Method and device for casting and forming special-shaped high pier at one time

CN117552347BCN 117552347 BCN117552347 BCN 117552347BCN-117552347-B

Abstract

The invention relates to the field of pier column construction and provides a one-time pouring molding method and device for a special-shaped high pier, wherein the molding method comprises the following steps of building a pouring mold, wherein the pouring mold comprises a pier body mold, two groups of ventral arch molds and a capping beam mold which are sequentially arranged from bottom to top, and the two groups of ventral arch molds are supported above the pier body mold and form a Y-shaped structure with the pier body mold; the forming method and the forming device of the invention are used for pouring the pier body mould in advance, the pier body mould is vertical, a top window is reserved above the pier body mould, the grouting and the vibrating operation in the pier body mould are convenient, the penetration and the lifting of a string cylinder are convenient, the segregation of concrete is avoided, the one-time pouring of the two groups of the abdomen arches and the capping beam is completed, the construction period is saved, and the construction difficulty is reduced.

Inventors

LUO CHENG
YANG BO
DIAO YANG

Assignees

四川省交通建设集团有限责任公司

Dates

Publication Date: 20260505
Application Date: 20231227

Claims (6)

1. The one-time pouring molding method for the special-shaped high pier is characterized by comprising the following steps of: Building a pouring mould (1), wherein the pouring mould (1) comprises a pier body mould (10), two groups of abdominal arch moulds (11) and a capping beam mould (12) which are sequentially arranged from bottom to top, and the two groups of abdominal arch moulds (11) are supported above the pier body mould (10) and form a Y-shaped structure with the pier body mould (10); Pouring the pier body, namely pouring slurry into the pier body mould (10) in a skylight opening (100) at the upper end of the pier body mould (10) between the two groups of abdominal arch moulds (11) until the pier body pouring is completed; Pouring the ventral arch and the bent cap, namely pouring the ventral arch and the bent cap in sequence from bottom to top by pouring slurry into the two groups of ventral arch molds (11) through openings at the upper ends of the two groups of ventral arch molds (11); Before the pier body is poured, a group of construction platforms (2) are respectively erected above the pier body mould (10) and on the periphery of the bent cap mould (12), and each group of construction platforms (2) is provided with a movable concrete hopper (22) so as to introduce slurry into the mould; In the pier body pouring step, slurry led out of a concrete hopper (22) is led into a pier body die (10) through a string cylinder (23), the upper end of the string cylinder (23) is hung through a group of steel wire ropes, the upper end of each steel wire rope penetrates through a top window (100) and a reserved hole (210) positioned on a second construction platform (21), a winch (24) is arranged on the second construction platform (21), the upper end of each steel wire rope is connected to the winch (24), the string cylinder (23) is driven to be lifted through the winch (24), when a pier body is poured, the string cylinder (23) is firstly lowered into the pier body die (10), and in the grouting process, the string cylinder (23) is gradually lifted upwards through the winch (24), so that the height difference between the string cylinder (23) and a concrete surface in the pier body die (10) is always in a proper range, and segregation in the concrete slurry falling process is avoided; in the step of pouring the abdominal arch and the bent cap, two groups of concrete hoppers (22) are arranged on a construction platform (2) positioned on the periphery of a bent cap die (12), the two groups of concrete hoppers (22) are respectively positioned above one group of the abdominal arch die (11), and the lower end of each group of concrete hoppers (22) is communicated with one group of string drums (23) extending into the abdominal arch die (11); In the pier body pouring step, the day window (100) is closed immediately after the pier body pouring is completed.
2. The one-time casting molding method of the special-shaped high pier according to claim 1, wherein in the pier body casting step and the abdominal arch and bent cap casting step, concrete in a mold is required to be vibrated, and the vibration mode comprises the mode of vibrating the inside of the mold and/or the mode of arranging a vibrator on the outer wall of the mold.
3. The method for casting and forming the special-shaped high pier at one time according to claim 1, wherein in the step of casting the pier body, after the pier body is cast, a skylight opening (100) at the upper end of the pier body die (10) and a discharge opening of the string cylinder (23) are closed, and the concrete hopper (22) and the string cylinder (23) are lifted and moved to a construction platform (2) positioned on the periphery of the capping beam.
4. A molding apparatus employing the one-time casting molding method for a profiled high pier according to any one of claims 1 to 3, characterized in that the apparatus comprises: a pier body mold (10); two groups of abdominal arch molds (11) which are arranged at the upper end of the pier body mold (10) and form a Y-shaped structure with the pier body mold (10), and The bent cap mould (12) is arranged at the upper ends of the two groups of the abdominal arch moulds (11), the lower ends of the bent cap mould are communicated with the two groups of the abdominal arch moulds (11), and the bent cap mould (12) is provided with a preformed hole (210) for penetrating a steel wire rope for connecting the winch (24) and the string drum (23).
5. The molding apparatus according to claim 4, wherein the casting mold (1) and the construction platform (2) are supported on a movable support mat (130) by temporary support columns (13), wherein the support mat (130) is placed on the ground.
6. The molding device according to claim 4, wherein a first construction platform (20) is arranged above the pier body mold (10), a second construction platform (21) is arranged on the periphery of the capping beam mold (12), a conduit (30) is communicated with a concrete hopper (22) arranged on the first construction platform (20), the conduit (30) is connected with an automobile pump (31) for grouting, and the conduit (30) is arranged on the first construction platform (20) and the second construction platform (21).

Description

Method and device for casting and forming special-shaped high pier at one time Technical Field The invention relates to the field of pier column construction, in particular to a one-time pouring molding method and device for a special-shaped high pier. Background In the construction of the bridge pier column, concrete is poured layer by layer in a built mould until the pier body and a capping beam above the pier body are formed, in the construction of the pier column, as the capping beam is generally transversely arranged above the pier body, the pouring of the pier column can be finished before the pouring of the pier body and after the pier body mould is disassembled, the construction of the capping beam mould and the pouring of the capping beam are carried out, the construction technology is mature and convenient, but in the construction of the abnormal-shaped pier column (such as a Y-shaped pier), the capping beam and the pier body are supported by two groups of abdominal arches, the traditional construction method is that the pier body, the two groups of abdominal arches and the capping beam are sequentially constructed after the pier body is formed, the construction of the capping beam is carried out after the abdominal arches are formed and the mould is disassembled, the construction sequence is complicated, and the construction period is long. For the above reasons, it is necessary to provide a special-shaped high disposable pouring molding scheme and molding device. Disclosure of Invention The invention aims to overcome the defects of the background technology and provides a special-shaped high one-time pouring molding scheme and a molding device. The embodiment of the invention is realized by the following technical scheme: in one aspect, the invention provides a one-time pouring molding method for a special-shaped high pier, which comprises the following steps: building a pouring mould, wherein the pouring mould comprises a pier body mould, two groups of abdominal arch moulds and a capping beam mould which are sequentially arranged from bottom to top, and the two groups of abdominal arch moulds are supported above the pier body mould and form a Y-shaped structure with the pier body mould; Pouring the pier body, namely pouring slurry into the pier body mould in a skylight opening at the upper end of the pier body mould between the two groups of the abdominal arch moulds until the pier body pouring is completed; Pouring the ventral arch and the capping beam, grouting into the two groups of ventral arch molds from the upper end openings of the two groups of ventral arch molds, and sequentially completing pouring of the ventral arch and the capping beam from bottom to top. Further, before the pier body is poured, a group of construction platforms are respectively erected above the pier body die and on the periphery of the capping beam die, and each group of construction platforms is provided with a movable concrete hopper so as to introduce slurry into the die. Further, in the pier body pouring step, slurry led out of the concrete hopper is led into the pier body mold through the stringing barrel so as to avoid slurry segregation, and the stringing barrel is lifted upwards step by step through the winch. Further, in the step of pouring the abdominal arch and the bent cap, two groups of concrete hoppers are arranged on the construction platform positioned on the periphery of the bent cap die, the two groups of concrete hoppers are respectively positioned above one group of the abdominal arch die, and the lower ends of the concrete hoppers in each group are communicated with one group of the string barrels extending into the abdominal arch die. Further, in the pier body pouring step, the day window is closed immediately after the pier body pouring is completed. Further, in the pier body pouring step and the abdominal arch and bent cap pouring step, concrete in the mold needs to be vibrated, and the vibration mode comprises the mode that the inside of the mold is vibrated and/or a vibrator is arranged on the outer wall of the mold. Further, in the pier body pouring step, after the pier body pouring is completed, a top window at the upper end of the pier body die and a discharge hole of the string cylinder are closed, and the concrete hopper and the string cylinder are lifted to a construction platform positioned on the periphery of the capping beam. In another aspect, the present invention provides a molding device for one-time casting of a profiled high pier, the molding device comprising: pier body mould; Two groups of abdominal arch molds which are arranged at the upper end of the pier body mold and form a Y-shaped structure with the pier body mold, and The bent cap mould is arranged at the upper ends of the two groups of the ventral arch moulds, the lower ends of the bent cap mould are communicated with the two groups of the ventral arch moulds, and the bent cap mould is provided with a preformed ho