CN110258312B - Structure connecting section of section assembly pier column, design method and construction method thereof - Google Patents
Structure connecting section of section assembly pier column, design method and construction method thereof Download PDFInfo
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- CN110258312B CN110258312B CN201910643029.4A CN201910643029A CN110258312B CN 110258312 B CN110258312 B CN 110258312B CN 201910643029 A CN201910643029 A CN 201910643029A CN 110258312 B CN110258312 B CN 110258312B
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- 238000000034 method Methods 0.000 title claims abstract description 36
- 238000013461 design Methods 0.000 title claims abstract description 34
- 238000010276 construction Methods 0.000 title claims abstract description 31
- 239000000463 material Substances 0.000 claims description 39
- 239000000853 adhesive Substances 0.000 claims description 22
- 230000001070 adhesive effect Effects 0.000 claims description 21
- 230000002787 reinforcement Effects 0.000 claims description 14
- 238000007789 sealing Methods 0.000 claims description 10
- 238000010008 shearing Methods 0.000 claims description 8
- 230000008569 process Effects 0.000 claims description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000003292 glue Substances 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 238000004804 winding Methods 0.000 claims description 6
- 229920006335 epoxy glue Polymers 0.000 claims description 5
- 230000007935 neutral effect Effects 0.000 claims description 5
- 239000011248 coating agent Substances 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 4
- 238000007790 scraping Methods 0.000 claims description 3
- 239000003566 sealing material Substances 0.000 claims description 3
- 238000003780 insertion Methods 0.000 claims description 2
- 230000037431 insertion Effects 0.000 claims description 2
- 238000005452 bending Methods 0.000 description 9
- 238000011065 in-situ storage Methods 0.000 description 7
- 239000004567 concrete Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000004570 mortar (masonry) Substances 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 3
- 239000011440 grout Substances 0.000 description 2
- 230000013011 mating Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000011150 reinforced concrete Substances 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 239000008399 tap water Substances 0.000 description 2
- 235000020679 tap water Nutrition 0.000 description 2
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 238000009417 prefabrication Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/02—Piers; Abutments ; Protecting same against drifting ice
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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Abstract
The invention discloses a structural connection section of a segment assembly pier column, a design method and a construction method thereof, wherein the structural connection section comprises a male segment and a female segment, the male segment comprises a first body, a first assembly end and a second assembly end are arranged on the first body, a plurality of first longitudinal ribs are further arranged in the first body, each first longitudinal rib penetrates through the first body and extends out of the first assembly end and the second assembly end respectively, the female segment comprises a second body, a third assembly end and a fourth assembly end are arranged on the second body, the height of the second body is larger than or equal to the sum of the lengths of the first longitudinal ribs extending out of the first assembly end and the second assembly end, a plurality of through holes are further arranged in the second body, the number, the positions and the cross section sizes of the through holes are matched with those of the first longitudinal ribs, a shear key A is arranged on the first assembly end and the third assembly end, a shear key B is arranged on the second assembly end and the fourth assembly end, and the shear key A and the shear key B are matched with each other; all the assembling ends are provided with grooves with the same shape and size.
Description
Technical Field
The invention relates to the technical field of bridge engineering, in particular to a structural connection section of a section assembly type pier stud, a design method and a construction method thereof.
Background
In municipal traffic engineering and railway engineering, the design, manufacture and construction of the segmental fabricated beam are mature, the existing beam manufacturing methods such as a long line method and a short line method are widely applied to the construction of large and small bridges, and the bridge pier is long in construction period of the whole bridge due to the fact that the cast-in-situ construction mode is adopted as a main mode, so that the method is one of important barriers for realizing the full bridge assembly, and the exertion of the advantages of the fabricated structure is limited. The integral prefabricated pier column is an engineering application form for realizing the prefabricated assembly of the pier column, but the method has the outstanding problems of large weight, large size and volume of components, limitation of transportation and hoisting and the like. The sectional assembly Pier Stud (PSBC) is prefabricated and assembled in sections, so that the weight and the size of the prefabricated component can be remarkably reduced.
The pier column is used as a main side force resistant component, and the earthquake resistance is a key index for evaluating the pier column assembly technology. The existing segment assembly Pier Stud (PSBC) mainly adopts dry joint connection, and two combined assembly forms are mainly adopted among the segments:
the first is a prestress-connected segment assembly pier, wherein each segment is connected by only external or internal prestress steel bars penetrating through the whole pier, and longitudinal bars of each segment are discontinuous. The stress, deformation and damage characteristics of the segment fabricated pier column are greatly different from those of the cast-in-situ pier column. Under the action of earthquake, the configuration of the prestressed reinforcement leads to small residual deformation after small earthquake, but the lack of continuous longitudinal reinforcement leads to poor overall energy consumption capability and damage to brittleness, so that the method is not suitable for the application in medium and high intensity areas.
In order to improve the earthquake resistance, energy-consuming bars such as longitudinal bars are used among the sections, and grouting sleeve connection is mainly adopted among the sections. The two ends of each section of the sectional assembly pier stud are pre-buried with a plurality of grouting sleeves, grouting holes and grout outlets are reserved for each grouting sleeve, and special grouting materials are adopted for grouting. The price of grouting sleeve and special grouting material is higher, grouting construction is more complicated, the price of connecting materials is increased along with the increase of connecting surfaces, the construction time is prolonged, and the engineering application value of the segment fabricated pier stud adopting the method is severely limited.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides a structural connecting section of a segment assembly pier column, a design method and a construction method thereof, which can reduce construction cost and difficulty, further improve component standardization and better perform industrial mass production.
In order to achieve the above object, the present invention provides the following technical solutions:
a structural connection section of a segment-assembled pier stud, comprising a male segment and a female segment;
the male section comprises a first body, a first assembling end and a second assembling end are arranged on the first body, a plurality of first longitudinal ribs are further arranged in the first body, and each first longitudinal rib penetrates through the first body and extends out of the first assembling end and the second assembling end respectively;
the female section comprises a second body, a third assembling end and a fourth assembling end are arranged on the second body, the height of the second body is larger than or equal to the sum of the lengths of the first longitudinal ribs extending out of the first assembling end and the second assembling end, a plurality of through holes are further formed in the second body, and the number, the positions and the cross section sizes of the through holes are matched with those of the first longitudinal ribs;
the first assembling end and the third assembling end are provided with shear keys A, the second assembling end and the fourth assembling end are provided with shear keys B, and the shear keys A and the shear keys B are matched;
the first end of assembling and second end of assembling all are equipped with first annular groove, the third end of assembling and fourth end of assembling all are equipped with the second annular groove, the shape size of first annular groove and second annular groove is the same.
Aiming at the practical problems that the prefabricated section is provided with a plurality of joints and longitudinal ribs are difficult to be arranged in a full length mode, so that economy, practicability and the like are affected, the prefabricated section is designed into two standard sections, wherein the first type is a longitudinal rib section (male section), and the second type is a connecting section (female section). The first longitudinal rib of the male section extends out, a hook is not required to be arranged generally, and the first longitudinal rib extends into the through hole of the female section and is connected through grouting. The upper male section and the lower male section can be connected to one female section, the male section and the female section are designed, the continuity of the longitudinal rib mechanics of the section assembly pier stud can be achieved, a grouting sleeve or a grouting anchor is not needed, the construction difficulty and the cost of a joint are obviously reduced, and the connection difficulty caused by segmental construction is reduced. Furthermore, a concrete shear key is arranged on the contact surface of the male section and the female section, so that the positioning and limiting in the installation process are realized while the shearing resistance is improved. The first annular groove and the second annular groove which are arranged at the joint between the sections are matched with sealing materials for use, so that the sealing performance between the sections is improved, and the use requirement of the durability of the pier column is met.
Meanwhile, the male section and the female section are part of the pier stud structure, and the requirements of corresponding structural strength and rigidity are met. The male section and the female section are equivalent in length, the section size of the female section is consistent with that of the male section, holes penetrating up and down can be reserved, a reliable constraint environment is provided for longitudinal ribs to be connected with adhesive materials, and the reduction of adhesive sliding performance of the longitudinal ribs without hooks is counteracted. The through holes and the main section have equal length and large openings, the minimum bonding length corresponding to the longitudinal ribs with different sizes does not play a control role in the design, the grouting construction of common high-strength mortar or self-leveling concrete can be realized, the grouting construction of high-price special materials such as bonding mortar is not needed, the material cost is saved, and the construction difficulty is reduced. The reinforcement ratio of the longitudinal ribs and the stirrups of the female section can be the same as that of the male section, the strength of the female section does not need to be checked any more, the bonding length meets the minimum bonding length requirement, and the bonding strength at the joint is not controlled, so that the design method of the section assembly pier column is consistent with that of the cast-in-situ pier column, and the design difficulty is reduced. The assembly process adopts a consistent construction procedure, so that the construction difficulty is reduced. If the consumption of a single line is large, industrial production is realized by designing standard sections, and the prefabrication processing cost of the sections can be further reduced.
Preferably, the female section is further provided with a plurality of second longitudinal ribs, the second longitudinal ribs are arranged along the second body in a through length mode, the number of the second longitudinal ribs is equal to that of the first longitudinal ribs, and the sectional area of the second longitudinal ribs is equal to that of the first longitudinal ribs. Preferably, the second longitudinal rib is arranged outside the through hole, i.e. further away from the neutral axis. When the bending bearing capacity of the female segment is calculated, the effective section of the female segment is larger than that of the lower adjacent male segment, and the bending bearing capacity of the female segment is larger than that of the male segment, so that the female segment does not need to be designed for additional bending bearing capacity.
Preferably, the through holes comprise spiral reinforcement holes, steel pipe holes, corrugated pipe holes and the like.
Preferably, the length of the first longitudinal rib extending out of the first assembling end is smaller than or equal to the length of the first longitudinal rib extending out of the second assembling end. When the two are equal in length, the structures of the two assembling ends of the male section are identical, and the male section is convenient to process and assemble.
Preferably, stirrups are further arranged in the first body and the second body, and the volume reinforcement ratio of the stirrups of the first body and the second body is equal.
Preferably, the male and female segments are each circular in cross-section, square in cross-section or otherwise.
Preferably, the shear key A is of a groove structure, the shear key B is of a convex structure, and other forms of shear keys or shear key combinations can be designed, so long as the shear effect of concrete can be realized, and the design requirement of the shear bearing capacity of relevant specifications can be met.
Preferably, the first annular groove and the second annular groove are filled with sealing materials. Specifically, epoxy glue is uniformly coated on all the first annular grooves and all the second annular grooves, waterproof coiled materials are wound and stuck, sealing glue is coated, and scraping and repairing are carried out.
The invention also discloses a design method of the structural connection section of the segment assembly pier stud, which comprises the following steps:
step one: designing structural connecting sections of the segment assembly pier stud into two types of standard segments, namely a male segment and a female segment;
step two: designing a male section, including calculating the number, the section size and the position of first longitudinal ribs in the male section, and respectively extending the lengths of a first assembling end and a second assembling end of the first longitudinal ribs;
step three: designing a female section, wherein the height of the female section is determined according to the sum of the lengths of the first longitudinal ribs extending out of the first assembling end and the second assembling end; determining the number, the cross-sectional size and the positions of the through holes of the female section according to the number, the cross-sectional size and the positions of the first longitudinal ribs; determining the number and the section size of second longitudinal ribs in the main section according to the number and the section size of the first longitudinal ribs, wherein the second longitudinal ribs are arranged far away from a neutral axis relative to the first longitudinal ribs;
step four: designing shear keys on the male section and the female section according to the design requirement of the shear bearing capacity;
the sequence of the third step and the fourth step can be exchanged.
The design method breaks through the conventional design method of longitudinal rib connection, the grouting sleeve is not needed, the longitudinal rib connection is directly carried out through the female section, the bending bearing capacity of the female section is ensured to be larger than that of the adjacent male section in design, therefore, special design and checking calculation on the bending bearing capacity of the female section are not needed, the length of the male section extending out of the longitudinal rib is not limited by the size of a connecting piece, and the bonding strength is not controlled. The volume hoop distribution rate of the female segment is equal to that of the adjacent male segment, the shear bearing capacity in the segments does not need to be checked, shear keys are arranged between the segments, and after unified design, the shearing damage between the segments can be avoided. The arrangement of the reinforcing method of the female section and the shear key between the sections ensures that the design method of the section assembly pier column is equivalent to that of the cast-in-situ pier column, and the integral structural performance is equivalent to that of the cast-in-situ pier column.
Preferably, the design method further comprises the steps of calculating the stirrup volume reinforcement ratio of the male section, and designing the stirrup of the female section according to the stirrup volume reinforcement ratio of the male section.
The invention also discloses a construction method of the structural connection section of the segment assembly pier stud, which comprises the following steps:
step one: coating adhesive materials on the first assembling end of the male segment, hoisting the female segment above the male segment, aligning the fourth assembling end of the female segment with the first assembling end of the male segment, aligning and assembling the through holes of the female segment to the first longitudinal ribs of the male segment, aligning and assembling the shear key B of the female segment to the shear key A of the male segment;
step two: filling adhesive materials into the through holes of the female segments until the adhesive materials overflow, and uniformly coating the overflow adhesive materials on the third assembling surfaces of the female segments;
step three: hoisting another male segment above the female segment, the second mating face of the other male segment facing the third mating face of the female segment;
step four: inserting a first longitudinal rib of the other male segment into the through hole, and assisting in insertion by vibrating the longitudinal rib through a vibrating rod in the process of inserting the first longitudinal rib into the through hole;
step five: repeating the first to fourth steps until the assembly of all the male segments and the female segments is completed;
step six: after the assembly of all the male segments and the female segments is completed, all the first annular grooves and the second annular grooves are cleaned, after the adhesive material reaches the design strength, epoxy glue is uniformly coated on all the first annular grooves and the second annular grooves, the waterproof coiled material is wound, then sealing glue is coated, and the sealing glue is scraped and smoothed.
The bonding material comprises high-strength mortar, self-leveling concrete and the like, in the construction process, as the through holes of the female segments are adopted, the pouring method of the bonding material is more convenient to construct with the longitudinal ribs, the construction cost and the difficulty can be reduced, the first annular groove and the second annular groove are arranged at the joint between the segments, the construction difficulty is reduced while the sealing between the segments is ensured, and the engineering application value of the segment assembly pier column is improved.
Preferably, the shear key a is a groove structure, and the shear key B is a protrusion structure.
Preferably, in the first step, when the adhesive material is applied to the first assembling end of the male segment, the adhesive material filled in the shear key a is at least one quarter of the volume of the groove, so as to ensure that the shear key a and the shear key B are tightly matched;
preferably, in the second step, the filling amount of the adhesive material at the shear key a of the female segment is at least one fourth of the volume of the groove, so as to ensure that the shear key a and the shear key B are tightly matched.
Preferably, in the sixth step, the winding width of the waterproof coiled material is the sum of the heights of the first annular groove and the second annular groove, and the winding thickness is smaller than the depth of the first annular groove.
Compared with the prior art, the structural connection section of the segment assembly pier stud has the beneficial effects that:
through design public section and female section, can realize the continuous of section assembly pier stud each section inter-section longitudinal muscle mechanics, and need not to adopt grout sleeve and special grouting material, reduced the degree of difficulty and the cost of connection construction because of the segmentation. The standardization degree of the components can be further improved, industrial mass production can be better carried out, and the processing cost is further reduced.
Compared with the prior art, the design method of the structural connecting section of the segment assembly pier stud has the beneficial effects that:
according to the design method, longitudinal ribs are directly connected through the female sections, and the bending bearing capacity of the female sections is guaranteed to be larger than that of the adjacent male sections in design, so that special design and checking calculation of the bending bearing capacity of the female sections are not needed; the length of the bonding reinforcing steel bar is not limited, and the bonding strength does not play a role in control; the volume hoop matching rate of the female section is equal to that of the adjacent male section, and the shearing bearing capacity in the sections does not need to be checked; and the shear keys are arranged between the sections, so that after the sections are uniformly designed, the shearing damage between the sections can be avoided. The arrangement of the reinforcing method of the female section and the shear key between the sections ensures that the design method of the section assembly pier column is equivalent to that of the cast-in-situ pier column, and the integral structural performance is equivalent to that of the cast-in-situ pier column.
Compared with the prior art, the construction method of the structural connecting section of the segment assembly pier stud has the beneficial effects that:
in the construction process, as the through holes of the female segments are adopted, the pouring method of the bonding material is more convenient to construct by being connected with the longitudinal ribs, the construction cost and the difficulty can be reduced, the first annular groove and the second annular groove are arranged at the joint between the segments, the construction difficulty is reduced while the sealing between the segments is ensured, and the engineering application value of the segment assembly pier column is improved.
Description of the drawings:
fig. 1 is a front view of a male segment according to the present invention.
Fig. 2 is a top view of a male segment according to the present invention.
Fig. 3 is a top view of a male segment according to the present invention.
Fig. 4 is a front view of a female segment according to the present invention.
Fig. 5 is a top view of a female segment according to the present invention.
Fig. 6 is a top view of a female segment according to the present invention.
Fig. 7 is a schematic cross-sectional view of a steel pipe aperture according to the present invention.
Fig. 8 is an elevation view of a steel tube aperture according to the present invention.
Fig. 9 is a schematic cross-sectional view of a bellows aperture according to the present invention.
Fig. 10 is a front view of a bellows aperture according to the present invention.
Fig. 11 is a schematic cross-sectional view of a helical reinforcement hole according to the present invention.
Fig. 12 is a front view of a helical reinforcement hole according to the present invention.
Fig. 13 is a schematic view of a male and female segment assembly according to the present invention.
Fig. 14 is a cross-sectional view of a male and female segment assembly according to the present invention.
The marks in the figure: 1-a male section, 10-a first body, 11-a first assembling end, 12-a second assembling end, 13-a first longitudinal rib and 14-a first annular groove; 2-female segments, 20-second bodies, 21-third assembling ends, 22-fourth assembling ends, 23-through holes, 24-second longitudinal ribs and 25-second annular grooves; 3-shear key A, 4-shear key B, 5-adhesive material.
Detailed Description
The present invention will be described in further detail with reference to test examples and specific embodiments. It should not be construed that the scope of the above subject matter of the present invention is limited to the following embodiments, and all techniques realized based on the present invention are within the scope of the present invention.
Example 1
A structural connection section of a segment-assembled pier stud comprises a male segment 1 and a female segment 2.
As shown in fig. 1, the male segment 1 includes a first body 10, the first body 10 is a reinforced concrete structure, and stirrups are disposed in the first body 10. The first body 10 is provided with a first assembling end 11 and a second assembling end 12, and the first assembling end 11 and the second assembling end 12 are used for assembling with the female segment 2. The first body 10 is further provided with a plurality of first longitudinal ribs 13, and each first longitudinal rib 13 penetrates through the first body 10 and extends out of the first assembly end 11 and the second assembly end 12 respectively. In this embodiment, preferably, the length of the first longitudinal rib 13 extending out of the first assembling end 11 is equal to the length of the first longitudinal rib extending out of the second assembling end 12. As shown in fig. 2-3, the male segment 1 may be circular in cross-section or square in cross-section.
Further, in order to meet the design requirement of the bearing capacity under shearing, the first assembling end 11 of the male segment 1 is provided with a shear key A3, the second assembling end 12 is provided with a shear key B4, and the shear key A3 and the shear key B4 are matched. The shear key may include various structural forms, in this embodiment, the shear key A3 is a tapered groove structure, and the shear key B4 is a protrusion structure and a reduced head structure. And the size (cross section and height) of the shear key A3 is slightly larger than that of the shear key B4, so that alignment and assembly are convenient.
As shown in fig. 4, the female segment 2 includes a second body 20, the second body 20 is a reinforced concrete structure, stirrups are disposed in the second body 20, and the volume reinforcement ratio of the stirrups of the female segment 2 is the same as that of the male segment 1. The second body 20 is provided with a third assembling end 21 and a fourth assembling end 22, and the third assembling end 21 and the fourth assembling end 22 are used for assembling with the male segment 1.
In order to realize the assembly of the upper male section 1 and the lower male section 1, the height of the second body 20 is greater than or equal to the sum of the lengths of the first longitudinal ribs 13 extending out of the first assembly end 11 and the second assembly end 12, a plurality of through holes 23 are further formed in the second body 20, and the number, the positions and the cross section sizes of the through holes 23 are matched with those of the first longitudinal ribs 13. As shown in fig. 5-6, the female segment 2 may be circular or square in cross-section, and the female segment 2 and the male segment 1 may be uniform in cross-sectional form and size.
Further, in order to meet the design requirement of the bearing capacity under shearing, the third assembling end 21 of the female segment 2 is provided with a shear key A3, the fourth assembling end 22 is provided with a shear key B4, and the shear key A3 and the shear key B4 are matched. The shear key may include various structural forms, in this embodiment, the shear key A3 is a tapered groove structure, and the shear key B4 is a protrusion structure and a reduced head structure. And the size (cross section and height) of the shear key A3 is slightly larger than that of the shear key B4, so that alignment and assembly are convenient.
Still further, the female segment 2 is further provided with a plurality of second longitudinal ribs 24, the second longitudinal ribs 24 are arranged along the second body 20 in a through length manner, the number of the second longitudinal ribs 24 is equal to that of the first longitudinal ribs 13, the cross section area of the second longitudinal ribs 24 is equal to that of the first longitudinal ribs 13, and the second longitudinal ribs 24 are arranged outside the through holes 23. That is, the second longitudinal ribs 24 are disposed farther from the neutral axis than the first longitudinal ribs 13, so that the bending bearing capacity of the female segment 2 is ensured to be larger than that of the male segment 1 adjacent to the lower part, and therefore, special design and checking calculation of the bending bearing capacity of the female segment 2 are not required.
As shown in fig. 7 to 8, the through hole 23 may be a steel pipe hole, as shown in fig. 9 to 10, the through hole 23 may be a bellows hole, as shown in fig. 11 to 12, and the through hole 23 may be a spiral reinforcement hole, which is not limited to the 3 forms of the present embodiment.
In addition, in order to meet the sealing requirement, the first assembling end 11 and the second assembling end 12 of the male segment 1 are respectively provided with a first annular groove 14, the third assembling end 21 and the fourth assembling end 22 of the female segment 2 are respectively provided with a second annular groove 25, and the first annular groove 14 and the second annular groove 25 are the same in shape and size. When the segments are assembled, epoxy glue is uniformly coated at the first annular groove 14 and the second annular groove 25 of two adjacent segments, a waterproof coiled material is wound and stuck, then sealing glue is coated, and scraping and repairing are carried out.
Example 2
A design method of a structural connection section of a segment assembly pier stud comprises the following steps:
step one: designing structural connecting sections of the segment assembly pier stud into two types of standard segments, namely a male segment 1 and a female segment 2;
step two: designing the male section 1, including calculating the section size, the height and the stirrup volume reinforcement ratio of the male section 1, the number, the section size and the position of the first longitudinal ribs 13, and the lengths of the first longitudinal ribs 13 extending out of the first assembling end 11 and the second assembling end 12 respectively;
step three: designing the female segment 2, including determining the height of the female segment 2 according to the sum of the lengths of the first longitudinal ribs 13 extending out of the first splicing end 11 and the second splicing end 12; the number, the cross-sectional size and the position of the through holes 23 of the female segment 2 are determined according to the number, the cross-sectional size and the position of the first longitudinal ribs 13; the number and the cross-sectional size of the second longitudinal ribs 24 in the female segment 2 are determined according to the number and the cross-sectional size of the first longitudinal ribs 13, and the second longitudinal ribs 24 are arranged far from the neutral axis relative to the first longitudinal ribs 13; designing stirrups of the female segment 2 according to the volume reinforcement ratio of the stirrups of the male segment 1; determining the cross-sectional dimension of the female segment 2 according to the cross-sectional dimension of the male segment 1;
step four: according to the design requirement of the shearing bearing capacity, the shear keys on the male segment 1 and the female segment 2 are designed, and the matched shear keys A3 and B4 are respectively arranged at two splicing ends of the two prefabricated ends, so that the requirement of standardized assembly can be met.
The sequence of the third step and the fourth step can be exchanged.
Example 3
As shown in fig. 13 to 14, a construction method of a structural connection section of a segment-assembled pier stud includes the steps of:
step one: when the male segment 1 is assembled, the first longitudinal ribs 13 of the male segment 1 are wetted by tap water, the adhesive material 5 is smeared at the first assembling end 11 of the assembled male segment 1, the surface of the chiseled hair is wetted and leveled, and the adhesive material 5 (high-strength mortar, self-leveling concrete and the like) which is at least one fourth of the volume of the groove is filled in the shear key A3 of the male segment 1. Then, wetting the through holes 23 of the to-be-spliced female segment 2 with tap water, hoisting the female segment 2 above the male segment 1, aligning the fourth splicing end 22 of the female segment 2 with the first splicing end 11 of the male segment 1, splicing the through holes 23 of the female segment 2 to the first longitudinal ribs 13 of the male segment 1 in an aligned manner, and splicing the shear key B4 of the female segment 2 to the shear key A3 of the male segment 1 in an aligned manner;
step two: filling the through holes 23 of the female segment 2 with the adhesive material 5 until overflowing, and uniformly coating the overflowing adhesive material 5 on the third assembling surface 21 of the female segment 2, so as to ensure that the shear key A3 of the female segment 2 is filled with at least one fourth of the volume of the groove of the adhesive material 5;
step three: hoisting the other male segment 1 above the female segment 2, aligning the second assembling surface 12 of the other male segment 1 with the third assembling surface 21 of the female segment 2, and assembling the shear key B4 of the other male segment 1 to the shear key A3 of the female segment 2 in an aligned manner;
step four: inserting the first longitudinal rib 13 of the other male segment 1 into the through hole 23, inserting the first longitudinal rib into the through hole 23 in an auxiliary manner by vibrating the longitudinal rib through a small-diameter successive rod during the process of inserting the first longitudinal rib into the through hole 23, and extruding the redundant adhesive material 5 by virtue of the dead weight of the segment;
step five: repeating the first to fourth steps until the assembly of all the male segments 1 and the female segments 2 is completed;
step six: after assembling of all the male segments 1 and the female segments 2 is completed, all the first annular grooves 14 and the second annular grooves 25 are cleaned, after the adhesive material 5 reaches the design strength (time control), epoxy glue is uniformly coated on all the first annular grooves 14 and the second annular grooves 25, a waterproof coiled material is wound and stuck, the winding width of the waterproof coiled material is the sum of the heights of the first annular grooves 14 and the second annular grooves 25, the winding thickness is smaller than the depth of the first annular grooves 14/the second annular grooves 25, sealing glue is coated, and the waterproof coiled material is scraped and leveled.
The above embodiments are only for illustrating the present invention and not for limiting the technical solutions described in the present invention, and although the present invention has been described in detail in the present specification with reference to the above embodiments, the present invention is not limited to the above specific embodiments, and thus any modifications or equivalent substitutions are made to the present invention; all technical solutions and modifications thereof that do not depart from the spirit and scope of the invention are intended to be covered by the scope of the appended claims.
Claims (6)
1. The structural connecting section of the segment-assembled pier stud is characterized by comprising a male segment (1) and a female segment (2);
the male segment (1) comprises a first body (10), a first assembling end (11) and a second assembling end (12) are arranged on the first body (10), a plurality of first longitudinal ribs (13) are further arranged in the first body (10), and each first longitudinal rib (13) penetrates through the first body (10) and extends out of the first assembling end (11) and the second assembling end (12) respectively;
the female section (2) comprises a second body (20), a third assembling end (21) and a fourth assembling end (22) are arranged on the second body (20), the height of the second body (20) is larger than or equal to the sum of the lengths of the first longitudinal ribs (13) extending out of the first assembling end (11) and the second assembling end (12), a plurality of through holes (23) are further arranged in the second body (20), and the number, the positions and the cross section sizes of the through holes (23) are matched with those of the first longitudinal ribs (13);
the first assembling end (11) and the third assembling end (21) are respectively provided with a shear key A (3), the second assembling end (12) and the fourth assembling end (22) are respectively provided with a shear key B (4), and the shear keys A (3) and B (4) are matched with each other;
the first assembling end (11) and the second assembling end (12) are respectively provided with a first annular groove (14), the third assembling end (21) and the fourth assembling end (22) are respectively provided with a second annular groove (25), and the first annular grooves (14) and the second annular grooves (25) are identical in shape and size;
the female section (2) is further provided with a plurality of second longitudinal ribs (24), the second longitudinal ribs (24) are arranged along the second body (20) in a full length mode, the number of the second longitudinal ribs (24) is equal to that of the first longitudinal ribs (13), and the sectional area of the second longitudinal ribs (24) is equal to that of the first longitudinal ribs (13);
the through hole (23) comprises a spiral reinforcement hole, a steel pipe hole and a corrugated pipe hole;
the length of the first longitudinal rib (13) extending out of the first assembling end (11) is smaller than or equal to the length of the first longitudinal rib extending out of the second assembling end (12);
stirrups are further arranged in the first body (10) and the second body (20), and sealing materials are filled in the first annular groove (14) and the second annular groove (25).
2. A structural connection section of a segment fabricated pier stud according to claim 1, characterized in that the second longitudinal ribs (24) are arranged outside the through-going hole (23).
3. A method of designing a structural connection section of a segment fabricated pier stud, for designing a structural connection section of a segment fabricated pier stud as claimed in any one of claims 1-2, comprising the steps of:
step one: the structural connecting section of the segment assembly pier stud is designed into two standard segments, namely a male segment (1) and a female segment (2);
step two: designing a male segment (1), including calculating the number, the section size and the position of first longitudinal ribs (13) in the male segment (1), and the lengths of the first longitudinal ribs (13) respectively extending out of a first assembling end (11) and a second assembling end (12);
step three: designing a female segment (2), wherein the height of the female segment (2) is determined according to the sum of the lengths of the first longitudinal ribs (13) extending out of the first assembling end (11) and the second assembling end (12); determining the number, the cross-sectional size and the position of the through holes (23) of the female segment (2) according to the number, the cross-sectional size and the position of the first longitudinal ribs (13); the number and the cross-sectional size of the second longitudinal ribs (24) in the main section (2) are determined according to the number and the cross-sectional size of the first longitudinal ribs (13), and the second longitudinal ribs (24) are arranged far away from a neutral axis relative to the first longitudinal ribs (13);
step four: according to the design requirement of the shearing bearing capacity, the shear keys on the male section (1) and the female section (2) are designed;
the sequence of the third step and the fourth step can be exchanged.
4. A method of designing a structural connection section of a segment fabricated pier according to claim 3, further comprising calculating a stirrup volume ratio of the male segment (1) and designing stirrups of the female segment (2) in accordance with the stirrup volume ratio of the male segment (1).
5. A construction method for a structural connection section of a segment fabricated pier column, which is used for constructing the structural connection section of a segment fabricated pier column according to any one of claims 1 to 2, comprising the steps of:
step one: smearing a bonding material (5) on a first assembling end (11) of a male segment (1), hoisting a female segment (2) above the male segment (1), aligning a fourth assembling end (22) of the female segment (2) with the first assembling end (11) of the male segment (1), aligning and assembling a through hole (23) of the female segment (2) to a first longitudinal rib (13) of the male segment (1), and aligning and assembling a shear key B (4) of the female segment (2) to a shear key A (3) of the male segment (1);
step two: filling the through holes (23) of the female segment (2) with adhesive materials (5) until the adhesive materials overflow, and uniformly coating the overflow adhesive materials (5) on the third assembly end (21) of the female segment (2);
step three: hoisting another male segment (1) above the female segment (2), the second splicing end (12) of the other male segment (1) being aligned with the third splicing end (21) of the female segment (2);
step four: inserting a first longitudinal rib (13) of the other male segment (1) into the through hole (23), and assisting in insertion by vibrating the longitudinal rib through a vibrating rod in the process of inserting the first longitudinal rib into the through hole (23);
step five: repeating the first to fourth steps until the assembly of all the male segments (1) and the female segments (2) is completed;
step six: after assembling of all the male segments (1) and the female segments (2) is completed, all the first annular grooves (14) and the second annular grooves (25) are cleaned, after the adhesive material (5) reaches the design strength, epoxy glue is uniformly coated on all the first annular grooves (14) and the second annular grooves (25), a waterproof coiled material is wound, sealing glue is coated, and scraping and repairing are performed.
6. The construction method of the structural connection section of the segmental fabricated pier column according to claim 5, wherein the winding width of the waterproof roll is the sum of the heights of the first annular groove (14) and the second annular groove (25), and the winding thickness is smaller than the depth of the first annular groove (14).
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