CN-116575711-B - Cast-in-situ archaized concrete bucket arch construction method

CN116575711BCN 116575711 BCN116575711 BCN 116575711BCN-116575711-B

Abstract

The invention relates to a cast-in-place archaized concrete bucket arch construction method, which comprises the steps of calculating the structures and the numbers of keels, special-shaped steel bars and connecting bars required to be used according to a drawing, preparing the required keels, special-shaped steel bars and connecting bars, forming an bucket arch inner frame among the special-shaped steel bars, the keels and the connecting bars, wrapping a steel wire mesh outside the bucket arch inner frame, enabling the top of the bucket arch inner frame to be free of the steel wire mesh, coating mortar outside the steel wire mesh, obtaining a mortar template after the mortar is molded, pouring concrete in the molded mortar template, describing the concrete according to the bucket arch shape, continuously carrying out water supplementing maintenance during the process, carrying out final acceptance after complete solidification, discarding the pouring mode of the traditional wooden template, and using the keels to be matched with the special-shaped steel bars to build the bucket arch shape, thereby effectively avoiding the problems of difficult template preparation, unstable reinforcement, and easy deviation caused by template splicing and support.

Inventors

WANG YAO
Zhuang Danli
CHEN YIHUA
CHEN JUNMING
Yang Linqi
HUANG HU
HUANG JINCHENG
YANG TINGJIE
HUANG ZHIHE
ZHANG YENAN
LIN ZHENYANG
CHEN ZHENGHUA
LIU ZHIYUAN
ZHANG GUOLIN

Assignees

中建海峡建设发展有限公司
中建海峡(厦门)建设发展有限公司

Dates

Publication Date: 20260508
Application Date: 20230530

Claims (9)

1. The cast-in-situ archaized concrete bucket arch construction method is characterized by comprising the following steps of: step one, preparing an arch structure shape according to building characteristic analysis, and drawing a drawing; Step two, calculating the structures and the number of keels (2), special-shaped steel bars (3) and connecting bars to be used according to a drawing; step three, preparing a keel (2), special-shaped steel bars (3) and connecting bars which are needed; Step four, fixedly connecting the keel (2) with the embedded bar (1) in the building, fixing the special-shaped steel bar (3) at the corresponding position of the keel (2), binding the connecting bars among the special-shaped steel bar (3), the keel (2) and the embedded bar (1), and forming a bracket inner frame; wrapping a steel wire mesh on the outer side of the bucket arch inner frame, and enabling the top of the bucket arch inner frame to be free of shielding by the steel wire mesh; coating mortar outside the steel wire mesh, and obtaining a mortar template after the mortar is molded; pouring concrete in the formed mortar template, describing the concrete according to the shape of the bracket, continuously supplementing water and curing during the period, and finally checking and accepting after the concrete is completely solidified; the connecting ribs comprise a first connecting rib (4) and a second connecting rib (6); The keel (2), the special-shaped steel bars (3), the first connecting ribs (4) and the second connecting ribs (6) which are required by preparation are manufactured through the arc bending mechanism and the steel bar cutting machine; the arc bending mechanism comprises a base (8), a plurality of supporting plates (11) circumferentially distributed around the base (8) and a reducing structure arranged on the supporting plates (11), and the supporting plates (11) are driven to be close to or far away from the circle center of the base (8) through corresponding oil cylinders (22).
2. The cast-in-place archaized concrete bucket arch construction method of claim 1, wherein the keel (2) is a C14 steel bar, the special-shaped steel bar (3) is a C6 steel bar, foam concrete is used in casting, and the casting mode adopts fractional casting.
3. The cast-in-situ archaized concrete bucket arch construction method of claim 1, wherein in the fourth step, before welding, the special-shaped steel bars (3) and the keels (2), the special-shaped steel bars (3) and the special-shaped steel bars (3), and the keels (2) and the planted bars (1) are bound and fixed through binding wires (5); in the fourth step, after the bucket arch inner frame is formed, one-time acceptance check is carried out, wherein the acceptance check content comprises size measurement, stability test, steel bar quality detection and welding position firmness detection.
4. The method of claim 1, wherein in the fifth step, the steel wire mesh wraps the outer side of the bucket arch inner frame in a shape of '匚' with an upward opening.
5. The method for constructing the cast-in-situ archaized concrete bucket arch according to claim 1, wherein in the step six, after the mortar is molded to obtain a mortar template, the mortar template is subjected to regular water supplementing maintenance, and after the mortar template is dried and fixed, the mortar template is subjected to secondary acceptance, wherein the acceptance comprises measurement of size, appearance precision, cracks and pits, and timely repair and treatment are performed.
6. The method of claim 1, wherein in the seventh step, the final acceptance comprises measuring the size, the shape accuracy, the crack and the dent, and repairing and processing in time.
7. The construction method of the cast-in-situ archaized concrete bucket arch according to claim 1, wherein the reducing structure comprises a stud (17) and a plurality of adjusting arc blocks (14) circumferentially distributed around the stud (17), the adjusting arc blocks (14) slide on a supporting plate (11) to be close to or far away from the stud (17), a threaded sleeve (18) is connected to the stud (17) in a threaded manner, and the threaded sleeve (18) is connected with the adjusting arc blocks (14) through connecting rods (20) in one-to-one correspondence.
8. The method for constructing the cast-in-situ archaized concrete bucket arch according to claim 7, further comprising a fixing plate (26), a lifting device (23) and a pressing piece (24) at the output end of the lifting device (23), wherein a plurality of groups of shaping rods (261) are arranged on the fixing plate (26), the shaping rods (261) are driven to reset through corresponding elastic pieces (262), and the lifting device (23) pushes the shaping rods (261) to be close to the base (8) through the pressing piece (24).
9. The method for constructing the cast-in-situ archaized concrete bucket arch according to claim 8, wherein a plurality of accommodating grooves (241) are formed in the side wall of the pressing piece (24), shaping pieces (25) are detachably arranged in the accommodating grooves (241), shaping grooves (251) with different structures are formed in the side wall of each shaping piece (25), and the bottommost group of shaping grooves (251) are used for being matched with shaping rods (261).

Description

Cast-in-situ archaized concrete bucket arch construction method Technical Field The invention relates to a cast-in-situ archaized concrete bucket arch construction method, and belongs to the technical field of building construction. Background The bracket, also called bracket, spreading and the like, is a special structure of a Chinese building, has very long history in generation and development, and is an example of the bracket which is originally seen in a four-dragon four-phoenix copper scheme of mountain country unearthed in a war period, and becomes a great feature of a modern building along with pursuing of people for indoor and outdoor attractiveness of the building; The traditional concrete bucket arch is prepared by prefabricating a wooden template in the construction process and then pouring the template, and because the bucket arch is complex in structure, high in camber rate and multiple in special-shaped structure, the traditional template splicing bucket arch pouring mode has the problems that reinforcement is difficult, reinforcement is not firm, template splicing and support are easy to cause deviation, and dislocation, uneven surface and the like are commonly caused after the concrete bucket arch is formed. For example, CN111719780a is a cast-in-situ construction process for an archaize building concrete bucket arch, which makes the bucket arch more convenient when installing the bucket arch after prefabricating the bucket arch part in advance, and is more convenient and quicker than the traditional cast-in-situ construction process for integral casting after integral construction. However, the prepared form cannot be reused due to the different bracket shapes of different buildings, resulting in serious waste of resources. Disclosure of Invention The invention aims to provide a cast-in-situ archaized concrete bucket arch construction method for solving the problems in the background technology. The technical scheme of the invention is as follows: A cast-in-situ archaized concrete bucket arch construction method comprises the following steps: step one, preparing an arch structure shape according to building characteristic analysis, and drawing a drawing; step two, calculating the structures and the number of keels, special-shaped steel bars and connecting bars to be used according to a drawing; preparing a keel, special-shaped steel bars and connecting bars which are required; step four, fixedly connecting the keels with the embedded bars in the building, fixing the special-shaped bars at the corresponding positions of the keels, binding the connecting bars among the special-shaped bars, the keels and the embedded bars, and forming a bracket inner frame; wrapping a steel wire mesh on the outer side of the bucket arch inner frame, and enabling the top of the bucket arch inner frame to be free of shielding by the steel wire mesh; coating mortar outside the steel wire mesh, and obtaining a mortar template after the mortar is molded; and seventhly, pouring concrete in the formed mortar template, describing the concrete according to the shape of the bracket, continuously supplementing water and curing during the period, and finally checking and accepting after the concrete is completely solidified. Preferably, the connecting ribs comprise a first connecting rib and a second connecting rib, the keels are C14 steel bars, the special-shaped steel bars are C6 steel bars, A4-level foam concrete is used in pouring, and the pouring mode adopts fractional pouring. Preferably, in the fourth step, before welding, binding and fixing the special-shaped steel bars and the keels, the special-shaped steel bars and the special-shaped steel bars, and the keels and the embedded bars through binding wires; in the fourth step, after the bucket arch inner frame is formed, one-time acceptance check is carried out, wherein the acceptance check content comprises size measurement, stability test, steel bar quality detection and welding position firmness detection. Preferably, in the fifth step, the steel wire mesh wraps the outer side of the bracket in a shape of a figure 匚 with an upward opening. Preferably, in the step six, after the mortar is molded to obtain a mortar template, the mortar template is subjected to regular water supplementing maintenance, and after the mortar template is dried and fixed, secondary acceptance is carried out, wherein the acceptance content comprises measurement of size, appearance precision, cracks and pits, and timely repair and treatment are carried out. Preferably, in the seventh step, the final acceptance content includes measuring the size, the shape accuracy, the crack and the dent, and repairing and processing in time. Preferably, the keel, the special-shaped steel bars, the first connecting bars and the second connecting bars which are required by preparation are prepared through the arc bending mechanism and the steel bar cutting machine; the arc bending mechanism comprises a b