阅读说明：本技术 一种适应异形平面形状的预制拱形结构排布方法 (Prefabricated arch structure arrangement method adapting to special-shaped plane shape ) 是由 周铮 周蓉峰 滕延锋 郭海军 徐佳乐 贾吉敏 金晶 沈恺达 康忠德 于 2020-05-29 设计创作，主要内容包括：本发明公开了一种适应异形平面形状的预制拱形结构排布方法,包括以下步骤,S1、预制拱板设计排布,S1.1、在拱结构设计平面图的纵向两侧边线上标明边线的分界点；S1.2、通过每侧边线上的分界点向相对侧的弧线边线或者直线边线作垂线,并以该垂线作为分界线,形成若干平面分区；S1.3、根据每个平面分区两侧的弧线边线或直线边线,做对应平面分区内沿对应平面分区纵向的纵向中心线；S1.4、在平面分区的两侧边线处分别沿边线建立拱座,并在两个拱座上之间排布预制拱板,并使得任一预制拱板中心线的中点经俯视投影在纵向中心线上。本发明具有降低预制拱结构的施工难度,并提升预制拱结构的受力平衡和稳定性的优点。(The invention discloses a prefabricated arch structure arrangement method adapting to a special-shaped plane shape, which comprises the following steps of S1, designing and arranging prefabricated arch slabs, and S1.1, marking boundary points of side lines on the lines of two longitudinal sides of an arch structure design plan; s1.2, drawing a vertical line from a demarcation point on each side line to an arc line sideline or a straight line sideline on the opposite side, and forming a plurality of plane partitions by taking the vertical line as a demarcation line; s1.3, according to arc line sidelines or straight line sidelines on two sides of each plane partition, making a longitudinal center line in the corresponding plane partition along the longitudinal direction of the corresponding plane partition; s1.4, respectively establishing arch seats along side lines at the edge lines of two sides of the plane partition, arranging prefabricated arch slabs between the two arch seats, and enabling the middle point of the central line of any prefabricated arch slab to be projected on the longitudinal central line through overlooking. The invention has the advantages of reducing the construction difficulty of the prefabricated arch structure and improving the stress balance and stability of the prefabricated arch structure.)

1. A prefabricated arch structure arrangement method adapting to a special-shaped plane shape is characterized by comprising the following steps:

s1, designing and arranging the prefabricated arch slabs (2),

s1.1, marking boundary points of side lines on the two side lines in the longitudinal direction of an arch structure design plan, wherein the boundary points mark the change positions according to the type of any side line, and the type of the side line comprises a straight line and an arc line;

s1.2, drawing a vertical line from a demarcation point on each side line to an arc line sideline or a straight line sideline on the opposite side, and forming a plurality of plane partitions by taking the vertical line as a demarcation line;

s1.3, according to arc line sidelines or straight line sidelines on two sides of each plane partition, making a longitudinal central line (4) in the corresponding plane partition along the longitudinal direction of the corresponding plane partition;

s1.4, establishing arch seats (1) at the edge lines of two sides of the plane partition respectively, arranging prefabricated arch slabs (2) between the two arch seats (1), and enabling the middle point of the center line of any prefabricated arch slab (2) to be projected on a longitudinal center line (4) in a top view mode.

2. A prefabricated arch structure arranging method for adapting to a special-shaped plane shape according to claim 1, wherein in S1, when both sides of the plane subarea are straight, the projection of the first longitudinal center line (4) of the plane subarea on the horizontal plane is straight, and both ends of the first longitudinal center line (4) of the plane subarea pass through the center point of the boundary line of the two longitudinal ends of the plane subarea, respectively, in which case the prefabricated arch bar (2) is installed with its span direction perpendicular to the first longitudinal center line (4) of the plane subarea.

3. The arrangement method of the prefabricated arch structure adapting to the special-shaped plane shape, according to the claim 1, characterized in that in S1, when the two side lines of the plane partition are respectively a straight side line and an arc side line on the plane, the straight line connecting the midpoints of the two side lines is the transverse center line of the plane partition; the projection of the second longitudinal central line (4) of the plane subarea on the horizontal plane is an arc line and the arc line passes through three points which are respectively the middle point of the boundary lines of the two ends of the plane subarea and the middle point of the transverse central line of the plane subarea, and the span direction of the prefabricated arch plate (2) is vertical to the second longitudinal central line (4) of the plane subarea when the prefabricated arch plate is installed.

4. A prefabricated arch structure arrangement method for adapting to a special-shaped plane shape according to claim 1, wherein in S1, when the two side lines of the plane partition are both arc side lines, the straight line connecting the midpoints of the two side lines is the transverse center line of the plane partition, the projection of the third longitudinal center line (4) of the plane partition on the horizontal plane is an arc line and the arc line passes through three points, which are respectively the midpoint of the boundary line between the two ends of the plane partition and the midpoint of the transverse center line of the plane partition, in which case the prefabricated arch bar (2) is installed with the span direction perpendicular to the third longitudinal center line (4) of the plane partition.

5. A method of arranging a preformed arch structure according to claim 1, it is characterized in that S2, the structure is arranged in vertical surface, when the sidelines on two sides of the plane partition are all straight sidelines and the span between the two sidelines along the direction of the plane partition is large or small, a prefabricated arch bar (2) with the prefabricated size of the minimum span between the two arch seats (1), and an extension seat (11) is poured and molded on the arch support (1) from the upper side of the arch support (1) to the upper side between the two arch supports (1), and the span of the two extension seats (11) along the direction which is horizontally vertical to the direction of the planar subarea is equal to the span of the prefabricated arch slab (2), the rise of each position of the arch base (1) is consistent, the rise of the arch base (1) is the rise of the small span end between the two arch bases (1), and the interface between the arch base (1) and the extension base (11) is the upper supporting surface of the arch base (1); then, the precast arch bar (2) is set up between the two extension seats (11) and the axis of the precast arch bar (2) is parallel to the direction of the upper side of the extension seat (11).

Technical Field

The invention relates to the technical field of prefabricated arch structure construction, in particular to a prefabricated arch structure arrangement method suitable for a special-shaped plane shape.

Background

The arch structure is widely applied to engineering due to large bearing capacity, reasonable structural stress and attractive appearance. The prefabricated arched structure has a large application market in structure construction due to the fact that construction speed is high, and machining precision of components is high.

In order to make the prefabricated arch structure convenient, the size of each prefabricated arch plate is the same. When assembling an arch structure, the existing method is to divide sidelines on site, and the sidelines are divided according to two side edges of the span of the arch structure; then, pouring arch seats along the side lines at the two side lines respectively; and then, erecting the prefabricated arch slabs between the arch bases on two sides one by one along the direction of the arch bases, and assembling into an arch structure. As shown in fig. 1 and 2, the arch structure is mainly composed of two-sided arch bases 1 and a plurality of prefabricated arch slabs 2 erected between the two-sided arch bases. When the prefabricated arch slabs are assembled on site, the prefabricated arch slabs 2 are installed on the arch base 2 block by block along the longitudinal direction of the designed arch surface of the arch structure, each prefabricated arch slab 2 is in a parallel state, the longitudinal direction of the arch structure is a straight line on the projection of a horizontal plane, an installation gap 3 is formed between any two adjacent prefabricated arch slabs 2, and the width of any installation gap 3 is approximately equal.

The above-described mounting is suitable when the design of the arch structure is more regular. However, due to the limitation of building design conditions, when the design trend of some arch structures is irregular in shape, and the span of the arch structure changes along the longitudinal direction, the installation mode causes overlarge difference of the picking lengths of the arch bases on two sides of the arch structure, improves the construction difficulty of the arch structure, seriously harms the stress balance and stability of the arch structure, and has a part to be improved.

Disclosure of Invention

In view of the above technical problems, an object of the present invention is to provide an arrangement method of prefabricated arch structures adapted to a special-shaped planar shape, in which a planar partition is divided, and a midpoint of a center line of any prefabricated arch slab is projected on a longitudinal center line through overlooking, so as to reduce a difference in length of two ends of the prefabricated arch slab in a span direction on an arch support, thereby facilitating reduction of construction difficulty of the arch structure and ensuring stress balance and stability of the arch structure.

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

a prefabricated arch structure arrangement method adapting to a special-shaped plane shape is characterized by comprising the following steps:

s1, designing and arranging the prefabricated arch slabs,

s1.1, marking boundary points of side lines on the two side lines in the longitudinal direction of an arch structure design plan, wherein the boundary points mark the change positions according to the type of any side line, and the type of the side line comprises a straight line and an arc line;

s1.2, drawing a vertical line from a demarcation point on each side line to an arc line sideline or a straight line sideline on the opposite side, and forming a plurality of plane partitions by taking the vertical line as a demarcation line;

s1.3, according to arc line sidelines or straight line sidelines on two sides of each plane partition, making a longitudinal center line in the corresponding plane partition along the longitudinal direction of the corresponding plane partition;

s1.4, respectively establishing arch seats along side lines at the edge lines of two sides of the plane partition, arranging prefabricated arch slabs between the two arch seats, and enabling the middle point of the central line of any prefabricated arch slab to be projected on the longitudinal central line through overlooking.

By adopting the technical scheme, the plane partition is divided, and the middle point of the central line of any prefabricated arch plate is projected on the longitudinal central line through overlooking, so that the difference of the lengths of the two ends of the prefabricated arch plate in the span direction on the arch support is favorably reduced, the construction difficulty of the prefabricated arch structure is favorably reduced, and the stress balance and the stability of the arch structure are favorably ensured.

The invention is further configured to: in S1, when both the side edges of the plane sub-area are straight, the projection of the first longitudinal center line of the plane sub-area on the horizontal plane is straight, and both ends of the first longitudinal center line of the plane sub-area pass through the center point of the boundary line between the two longitudinal ends of the plane sub-area, respectively, in which case the installation of the prefabricated arch bar has the span direction perpendicular to the first longitudinal center line of the plane sub-area.

By adopting the technical scheme, when two side edges of the plane partition are straight lines, the first longitudinal center line of the plane partition is set, and the span direction of the prefabricated arch bar is perpendicular to the first longitudinal center line of the plane partition, so that the normal arrangement operation of the prefabricated arch bar in the plane partition is ensured, and the difference of the lengths of the two ends of the prefabricated arch bar in the span direction on the arch support is reduced.

The invention is further configured to: in S1, when the two edge lines of the plane partition are respectively a straight line edge line and an arc line edge line on the plane, the straight line connecting the midpoints of the two edge lines is the horizontal center line of the plane partition; the projection of the second longitudinal central line of the plane subarea on the horizontal plane is an arc line and the arc line passes through three points which are respectively the middle point of the boundary lines at the two ends of the plane subarea and the middle point of the transverse central line of the plane subarea, and the span direction of the prefabricated arch plate is vertical to the second longitudinal central line of the plane subarea when the prefabricated arch plate is installed.

By adopting the technical scheme, when the two side lines of the plane partition are respectively the straight line side line and the arc line side line on the plane, the second longitudinal center line is set, and the span direction of the prefabricated arch bar is perpendicular to the second longitudinal center line of the plane partition, so that the normal arrangement operation of the prefabricated arch bar in the plane partition is ensured, and the difference of lengths of the two ends of the prefabricated arch bar in the span direction on the arch support is reduced.

The invention is further configured to: in S1, when the two side lines of the plane partition are both arc side lines, the straight line connecting the midpoints of the two side lines is the horizontal center line of the plane partition, the projection of the third longitudinal center line of the plane partition on the horizontal plane is an arc line, and the arc line passes through three points, which are respectively the midpoints of the dividing lines at the two ends of the plane partition and the midpoints of the horizontal center lines of the plane partition, in which case the span direction of the prefabricated arch bar is perpendicular to the third longitudinal center line of the plane partition when the prefabricated arch bar is installed.

By adopting the technical scheme, when the two side lines of the plane partition are arc side lines, the third longitudinal center line is set, the span direction of the prefabricated arch bar is perpendicular to the third longitudinal center line of the plane partition, normal arrangement operation of the prefabricated arch bar in the plane partition is guaranteed, and the difference of lengths of the two ends of the prefabricated arch bar in the span direction on the arch support is reduced.

The invention is further configured to: s2, structural vertical surface arrangement, when the side lines on two sides of the plane partition are straight side lines and the span between the two side lines along the direction of the plane partition is large and small, prefabricating an arch bar with the size of the minimum span between two arch bases, pouring and forming an extension base on the arch base from the upper part of the arch base between the two arch bases in the lateral direction, and enabling the span of the two extension bases in the direction horizontally vertical to the direction of the plane partition to be equal to the span of the prefabricated arch bar, wherein the rise heights of the arch bases are consistent, the rise height of the arch base is the rise height of the small end of the span between the two arch bases, and the interface between the arch base and the extension base is the upper supporting surface of the arch base; the precast arch is then set up between the two extension seats, and the axis of the precast arch will be parallel to the upper side of the extension seats.

Through adopting above-mentioned technical scheme, when the sideline of plane subregion both sides is the straight line sideline, and when two sidelines between follow the span that plane subregion moved towards both sides one big one little, set up the extension seat on the hunch seat to set up the prefabricated arch bar between two extension seats, thereby realize the normal facade of prefabricated arch bar and arrange the operation, help guaranteeing prefabricated arch structure whole stress balance degree and stability.

Compared with the prior art, the invention has the following beneficial effects:

(1) by dividing the plane subareas and enabling the middle point of the center line of any prefabricated arch slab in the length direction to be positioned on the longitudinal center line of the prefabricated arch structure in the plane subareas along the longitudinal direction of the prefabricated arch structure, the difference of the lengths of two ends of the prefabricated arch slab in the length direction on the arch support is reduced, the construction difficulty of the prefabricated arch structure is reduced, and the stress balance and the stability of the prefabricated arch structure are ensured;

(2) the extending seats are arranged on the arch seats, and the prefabricated arch slabs are arranged between the two extending seats in a lap mode, so that normal vertical face arrangement operation of the prefabricated arch slabs is achieved, and the balance degree and stability of the whole stress of the prefabricated arch structure are guaranteed.

Drawings

FIG. 1 is a schematic view of the overall structure of a prior art abutment;

FIG. 2 is a schematic view of a prior art precast arch arrangement;

FIG. 3 is a flow chart of the method for arranging the prefabricated arch structures according to the present embodiment, which is mainly adapted to the irregular planar shape;

FIG. 4 is a schematic view of the present embodiment mainly showing the first longitudinal centerline;

FIG. 5 is a schematic diagram of a second longitudinal centerline structure according to the present embodiment;

FIG. 6 is a schematic diagram of a third longitudinal centerline structure according to the present embodiment;

FIG. 7 is a schematic view showing the construction of the abutment and extension;

FIG. 8 is a schematic view mainly embodying a chamfered cylindrical structure;

fig. 9 is a schematic view mainly embodying the structure of a chamfered cylindrical surface.

Reference numerals: 1. an arch support; 11. an extension base; 2. prefabricating an arch bar; 3. a mounting gap; 4. a longitudinal centerline; 5. the cylindrical surface is chamfered.

Detailed Description

The present invention will be described in further detail with reference to examples and drawings, but the present invention is not limited to these examples.