CN109024249B - Socket type structure prefabricated assembly pier with joint made of cast-in-situ UHPC material - Google Patents
Socket type structure prefabricated assembly pier with joint made of cast-in-situ UHPC material Download PDFInfo
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- CN109024249B CN109024249B CN201810934492.XA CN201810934492A CN109024249B CN 109024249 B CN109024249 B CN 109024249B CN 201810934492 A CN201810934492 A CN 201810934492A CN 109024249 B CN109024249 B CN 109024249B
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- prefabricated
- pier
- bearing platform
- piers
- steel bars
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- 239000000463 material Substances 0.000 title claims abstract description 51
- 239000011374 ultra-high-performance concrete Substances 0.000 title claims abstract description 26
- 238000011065 in-situ storage Methods 0.000 title claims abstract description 23
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims abstract description 37
- 238000010276 construction Methods 0.000 claims abstract description 20
- 229910000831 Steel Inorganic materials 0.000 claims description 52
- 239000010959 steel Substances 0.000 claims description 52
- 239000004570 mortar (masonry) Substances 0.000 claims description 31
- 239000011148 porous material Substances 0.000 claims description 18
- 238000002347 injection Methods 0.000 claims description 12
- 239000007924 injection Substances 0.000 claims description 12
- 230000003014 reinforcing effect Effects 0.000 abstract description 10
- 238000000034 method Methods 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 238000009434 installation Methods 0.000 abstract 1
- 238000007599 discharging Methods 0.000 description 8
- 230000007797 corrosion Effects 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000011900 installation process Methods 0.000 description 3
- 238000009417 prefabrication Methods 0.000 description 3
- 238000010008 shearing Methods 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000004567 concrete Substances 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- 239000004568 cement Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000011178 precast concrete Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 230000008093 supporting effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/30—Adapting or protecting infrastructure or their operation in transportation, e.g. on roads, waterways or railways
Abstract
The invention relates to the technical field of bridge construction, in particular to a socket structure prefabricated assembly pier with a joint made of cast-in-situ UHPC material, which comprises a prefabricated bearing platform and prefabricated piers, wherein the prefabricated piers are arranged on the prefabricated bearing platform, and a plurality of the prefabricated piers are arranged in a stacked manner; the top surface of the prefabricated bearing platform and the top surface of the prefabricated pier are provided with mortises, the bottom of the prefabricated pier is provided with tenons, and the sizes of the tenons are matched with the mortises; pier reinforcing steel bars are embedded in the prefabricated piers. The invention has the beneficial effects that: through the design of tenons and mortises, dangerous accidents such as overturning and the like are prevented when the prefabricated bearing platform and the prefabricated pier are spliced, and the stability of the structure in the construction process is improved; the setting of pier reinforcing bar and cushion cap reinforcing bar can be after inserting the tenon, carries out the ligature with pier reinforcing bar and cushion cap reinforcing bar for the overall structure of pier is more stable in the installation.
Description
Technical Field
The invention relates to the technical field of bridge construction, in particular to a socket type structure prefabricated assembly pier with a joint made of cast-in-situ UHPC material.
Background
When the bridge structure encounters an earthquake, the bridge pier is a vulnerable part. At present, the spliced piers connected by high-strength mortar or structural adhesive are connected, the joints are mostly in a plane joint form, shearing dislocation possibly occurring between sections is difficult to eliminate, and the integrity and the earthquake resistance are inferior to those of the whole cast-in-situ piers, and the spliced piers are generally used in areas with lower earthquake risks. On the other hand, the construction precision requirement of the plane joint on the splicing surface is very high, the material mechanical property difference between the high-strength mortar or structural adhesive and the precast concrete is large, and the durability problem of the joint is more remarkable. At present, common concrete is adopted for full-section cast-in-situ among the prefabricated segments of piers of some cross-sea bridges in China, although the integrity of the piers can be improved, measures are needed to temporarily support upper-section pier columns during construction, the efficiency is low, the quality of the concrete of wet joints is generally inferior to that of the prefabricated segments, and therefore the spliced segments often become weak parts of the structure. Moreover, the site splicing operation of the prefabricated spliced pier is more dangerous to install than that of the poured pier.
The ultra-high performance concrete (UHPC for short) is a novel cement-based composite material, has high strength and good toughness, and simultaneously has good corrosion resistance, wear resistance and impermeability, and the tensile strength is generally not lower than 5MPa. The UHPC character from which coarse aggregate is removed can be regarded as a mortar, and is hereinafter referred to as ultra-high performance mortar (UHPM for short).
Disclosure of Invention
In order to overcome the defects in the prior art, the technical problems to be solved by the invention are as follows: the prefabricated spliced pier is convenient for site construction, improves site construction safety and can improve horizontal shear resistance of the pier.
In order to solve the technical problems, the invention adopts the following technical scheme:
the joint adopts a socket structure made of cast-in-situ UHPC material to prefabricate and assemble a pier, and comprises a prefabricate bearing platform and prefabricate piers, wherein the prefabricate piers are arranged on the prefabricate bearing platform, and a plurality of prefabricate piers are arranged in a stacked manner; the top surface of the prefabricated bearing platform and the top surface of the prefabricated pier are provided with mortises, the bottom of the prefabricated pier is provided with tenons, and the sizes of the tenons are matched with the mortises; the depth of the mortise is smaller than the length of the tenon protrusion;
pier steel bars are embedded in the prefabricated pier, and two ends of each pier steel bar extend out of the top surface and the bottom surface of the prefabricated pier; the length of the pier steel bars extending out of the bottom surface of the prefabricated pier is smaller than the length of the tenons protruding out;
bearing platform reinforcing steel bars are embedded in the prefabricated bearing platform, and the bearing platform reinforcing steel bars extend out of the top surface of the prefabricated bearing platform.
Further, a steel pipe is embedded in the tenon groove, the tenon size is matched with the steel pipe, and the tenon is embedded in the steel pipe.
Further, a material injection pore canal and a material discharge pore canal are arranged on the side wall of the bottom of the precast pier, and the material injection pore canal is communicated with the side wall of the bottom of the precast pier and the bottom surface of the precast pier.
Further, the discharging hole channel and the material injecting hole channel are arranged on the same horizontal plane.
Further, mortar is filled in the gaps between the steel pipe and the tenons, the gaps at the joints of the adjacent prefabricated piers and the gaps at the joints of the prefabricated piers and the prefabricated bearing platform.
Further, the mortar is ultra-high performance mortar.
Further, the top surface of prefabricated cushion cap is provided with the bellying, be provided with on the bellying the tongue-and-groove.
Further, the bridge pier fixing device further comprises fixing plates, wherein the fixing plates are respectively arranged on the outer walls of the connection parts of the protruding parts and the prefabricated bridge piers and the outer walls of the connection parts of the two prefabricated bridge piers.
Further, the side walls of the protruding portion and the side walls of the upper end and the lower end of the prefabricated pier are respectively provided with a fixing through hole, the axes of the fixing through holes are mutually parallel, fixing reinforcing steel bars are arranged in the fixing through holes, and the two ends of the fixing reinforcing steel bars extend out of the fixing through holes and penetrate through the fixing plates.
Further, the anchor is arranged at the end part of the fixed steel bar.
The invention has the beneficial effects that: through the design of tenons and mortises, dangerous accidents such as overturning and the like are prevented when the prefabricated bearing platform and the prefabricated pier are spliced, and the stability of the structure in the construction process is improved; the bridge pier steel bars and the bearing platform steel bars are arranged, and can be bound after the tenons are inserted, so that the whole structure of the bridge pier is more stable in the installation process; the positions of the pier reinforcing bars pre-buried by two adjacent prefabricated piers can be staggered when the pier reinforcing bars are pre-buried, so that the binding is convenient; after binding is completed, the four sides of the joints of the prefabricated bridge pier and the prefabricated bearing platform can be spliced with wood boards or other boards capable of being sealed, and grouting is performed, and after grouting is completed, the joint adopts a socket type structure of cast-in-situ UHPC material to improve the horizontal shear resistance of the prefabricated spliced bridge pier, so that the stability of the whole structure is improved.
Drawings
FIG. 1 is a front cross-sectional view of a prefabricated assembled pier of a socket construction employing cast-in-place UHPC material for a joint in accordance with an embodiment of the present invention;
FIG. 2 is a top view of a prefabricated cap of a prefabricated assembled pier of a socket structure with a cast-in-place UHPC material for a joint in accordance with an embodiment of the present invention;
description of the reference numerals:
1. prefabricating a bearing platform; 11. bearing platform reinforcing steel bars;
2. prefabricating bridge piers; 21. bridge pier reinforcing steel bars; 22. a material injection pore canal; 23. a discharge duct;
3. a tongue and groove; 31. a steel pipe;
4. a tenon;
5. a fixing plate;
6. fixing the reinforcing steel bars; 61. an anchor;
7. and (5) mortar.
Detailed Description
In order to describe the technical contents, the achieved objects and effects of the present invention in detail, the following description will be made with reference to the embodiments in conjunction with the accompanying drawings.
The most critical concept of the invention is as follows: through the design of tenon and mortise to pack ultra-high performance mortar, make when concatenation prefabricating cushion cap and prefabricating the pier, prevent dangerous accidents such as toppling appear, increased the stability of structure in the work progress, strengthened the structural stability of finished product simultaneously greatly.
Referring to fig. 1 and 2, a prefabricated spliced pier of a socket structure with a cast-in-situ UHPC material is adopted as a joint, and the prefabricated spliced pier comprises a prefabricated bearing platform 1 and prefabricated piers 2, wherein the prefabricated piers 2 are arranged on the prefabricated bearing platform 1, and a plurality of prefabricated piers 2 are arranged in a stacked manner; the top surface of the prefabricated pile cap 1 and the top surface of the prefabricated pier 2 are provided with mortises 3, the bottom of the prefabricated pier 2 is provided with tenons 4, and the sizes of the tenons 4 are matched with the mortises 3; the depth of the mortise 3 is smaller than the protruding length of the tenon 4;
pier steel bars 21 are embedded in the prefabricated pier 2, and two ends of each pier steel bar 21 extend out of the top surface and the bottom surface of the prefabricated pier 2; the length of the pier reinforcing steel bars 21 extending out of the bottom surface of the prefabricated pier 2 is smaller than the protruding length of the tenons 4;
bearing platform reinforcing steel bars 11 are embedded in the prefabricated bearing platform 1, and the bearing platform reinforcing steel bars 11 extend out of the top surface of the prefabricated bearing platform 1.
As can be seen from the above description, the above-mentioned adaptor adopts the spigot-and-socket structure of cast-in-situ UHPC material to prefabricate and assemble the pier, and has the beneficial effects that: through the design of the tenons 4 and the mortises 3, dangerous accidents such as overturning and the like are prevented when the prefabricated bearing platform 1 and the prefabricated bridge pier 2 are spliced, and the stability of the structure in the construction process is improved; after the tenons 4 are inserted, the pier steel bars 21 and the bearing platform steel bars 11 can be bound, so that the whole structure of the pier is more stable in the installation process; the positions of the pier reinforcing steel bars 21 pre-buried by two adjacent prefabricated piers 2 can be staggered when the pier reinforcing steel bars 21 are pre-buried, so that binding is convenient; after binding is completed, the four sides of the joint of the prefabricated pier 2 and the prefabricated bearing platform 1 can be spliced with wood plates or other plates capable of being sealed, grouting is carried out, and after grouting is completed, the joint adopts a socket structure of cast-in-situ UHPC material to improve the horizontal shear resistance of the prefabricated spliced pier, so that the stability of the whole structure is improved.
Further, the steel pipe 31 is embedded in the mortise 3, the size of the tenon 4 is matched with that of the steel pipe 31, and the tenon 4 is embedded in the steel pipe 31.
From the above description, the arrangement of the steel pipe 31 further increases the horizontal shear resistance of the prefabricated spliced pier of the socket structure of the cast-in-situ UHPC material, and increases the safety.
Further, a material injecting hole channel 22 and a material discharging hole channel 23 are arranged on the side wall of the bottom of the precast pier 2, and the material injecting hole channel 22 and the material discharging hole channel 23 are communicated with the side wall of the bottom of the precast pier 2 and the bottom surface of the precast pier 2.
From the above description, the arrangement of the injecting hole 22 and the discharging hole 23 can facilitate injecting the fixing material, facilitate construction operation and increase construction efficiency.
Further, the discharging hole 23 and the injecting hole 22 are disposed at the same horizontal plane.
As can be seen from the above description, by arranging the discharging hole 23 and the injecting hole 22 at the same horizontal plane, and arranging the injecting hole 22 and the pier grouting blind hole at the same horizontal plane, the injected fixing material can fully fill all the gaps at the joint, so that the stability of the whole structure is ensured.
Further, mortar 7 is filled in the gaps between the steel pipe 31 and the tenons 4, the gaps at the joints of the adjacent precast piers 2 and the gaps at the joints of the precast piers 2 and the precast cap 1.
From the above description, it is known that the mortar 7 can connect the tenons 4, the bearing platform reinforcing bars 11 and the pier reinforcing bars 21, which are disposed in the pipes of the steel pipes 31, into a whole, thereby ensuring the stability of the whole structure and increasing the shear resistance of the horizontal plane of the connection.
Further, the mortar 7 is a high-performance mortar.
From the above description, it is known that the high-performance mortar has the characteristics of high strength, corrosion resistance and good impermeability, and by the high-performance mortar, the whole structure can have stronger tensile capacity and reliability, and the durability can be increased.
Further, a protruding portion is arranged on the top face of the prefabricated bearing platform 1, and the mortise 3 is formed in the protruding portion.
Further, the bridge pier comprises a fixing plate 5, wherein the fixing plate 5 is respectively arranged on the outer wall of the joint of the protruding part and the prefabricated bridge pier 2 and the outer walls of the joints of the two prefabricated bridge piers 2.
Further, the side walls of the protruding portion and the side walls of the upper end and the lower end of the prefabricated pier 2 are respectively provided with a fixing through hole, the axes of the fixing through holes are parallel to each other, fixing reinforcing steel bars 6 are arranged in the fixing through holes, and two ends of each fixing reinforcing steel bar 6 extend out of the fixing through holes and penetrate through the fixing plate 5.
Further, an anchor 61 is further included, and the anchor 61 is disposed at an end of the fixing bar 6.
As can be seen from the above description, by the arrangement of the protruding portion, the fixing plate 5 and the fixing reinforcing steel bar 6 can be additionally arranged by the protruding portion, so that the prefabricated pier 2 is primarily fixed by the protruding rod and the fixing reinforcing steel bar 6 when grouting is not performed, and the construction safety is increased; the fixed steel bars 6 bolt the tenons and the mortises 3, so that the stability of the structure is further improved; the setting of fixed plate 5 can play the effect of sealed gap between two adjacent prefabrication piers 2 and prefabrication cushion cap 1 and prefabrication pier 2 simultaneously, makes the thick liquid water that fills fully fill the gap, has guaranteed the stability of structure.
Example 1
Referring to fig. 1 and 2, a prefabricated spliced pier of a socket structure with a cast-in-situ UHPC material is adopted as a joint, and the prefabricated spliced pier comprises a prefabricated bearing platform 1 and prefabricated piers 2, wherein the prefabricated piers 2 are arranged on the prefabricated bearing platform 1, and a plurality of prefabricated piers 2 are arranged in a stacked manner; the top surface of the prefabricated pile cap 1 is provided with a protruding part, the top surfaces of the protruding part and the top surface of the prefabricated pier 2 are provided with a mortise 3, a steel pipe 31 is embedded in the mortise 3, the bottom of the prefabricated pier 2 is provided with a tenon 4, the size of the tenon 4 is matched with that of the steel pipe 31, and the tenon 4 is embedded in the steel pipe 31; the depth of the mortise 3 is smaller than the protruding length of the tenon 4; pier steel bars 21 are embedded in the prefabricated pier 2, and two ends of each pier steel bar 21 extend out of the top surface and the bottom surface of the prefabricated pier 2; the length of the pier reinforcing steel bars 21 extending out of the bottom surface of the prefabricated pier 2 is smaller than the protruding length of the tenons 4; a bearing platform reinforcing steel bar 11 is embedded in the prefabricated bearing platform 1, and the bearing platform reinforcing steel bar 11 extends out of the top surface of the prefabricated bearing platform 1; the side wall of the bottom of the precast pier 2 is provided with a material injection pore canal 22 and a material discharge pore canal 23, and the material injection pore canal 22 and the material discharge pore canal 23 are communicated with the side wall of the bottom of the precast pier 2 and the bottom surface of the precast pier 2; the discharging hole channel 23 and the material injecting hole channel 22 are arranged on the same horizontal plane; mortar 7 is filled in the gaps between the steel pipes 31 and the tenons 4, the gaps at the joints of the adjacent precast piers 2 and the gaps at the joints of the precast piers 2 and the precast cap 1; the mortar 7 is high-performance mortar; the fixing plate 5 is respectively arranged on the outer wall of the joint of the protruding part and the prefabricated pier 2 and the outer walls of the joints of the two prefabricated piers 2; the side walls of the protruding parts and the side walls of the upper end and the lower end of the prefabricated pier 2 are respectively provided with a fixed through hole, the axes of a plurality of the fixed through holes are mutually parallel, fixed steel bars 6 are arranged in the fixed through holes, and two ends of each fixed steel bar 6 extend out of the fixed through holes and penetrate through the fixed plate 5; and further comprises an anchor 61, wherein the anchor 61 is arranged at the end part of the fixed steel bar 6.
The construction process of the socket type structure prefabricated assembly pier adopting the cast-in-situ UHPC material comprises the following steps:
step 1: coating ultra-high performance mortar on the bottom surface of the tenon;
step 2: embedding tenons 4 of the prefabricated piers 2 into mortises 3 of steel pipes 31 mounted on the prefabricated bearing platform 1, staggering bearing platform reinforcing steel bars 11 on the prefabricated bearing platform 1 and pier reinforcing steel bars 21 at the bottom of the prefabricated piers 2, and binding the bearing platform reinforcing steel bars 11 and the pier reinforcing steel bars 21;
step 3: the fixing plate 5 is arranged on the four side walls of the joint of the prefabricated pier 2 and the prefabricated bearing platform 1 and is fixed, the fixing steel bar 6 is inserted into the fixing through hole through the fixing plate 5 on one side and penetrates out from the other side of the through hole, the fixing steel bar 6 penetrates through the fixing plate 5 on the other side, and two ends of the fixing steel bar 6 are locked through the anchor 61;
step 4: injecting high-performance mortar into the material injection pore canal 22 until the high-performance mortar overflows and flows out of the material discharge pore canal 23;
step 5: coating ultra-high performance mortar on the top surface of the lower segment precast pier 2, embedding tenons 4 of the upper segment precast pier 2 into mortises 3 of steel pipes 31 arranged on the top surface of the lower segment precast pier 2, staggering pier steel bars 21 above the lower segment precast pier 2 and pier steel bars 21 on the bottom surface of the upper segment precast pier 2, and binding the two pier steel bars 21; the fixing plate 5 is arranged on the four side walls of the joint of the two prefabricated piers 2 and is fixed, the fixing reinforcing steel bar 6 is inserted into the fixing through hole through the fixing plate 5 on one side and penetrates out from the other side of the through hole, the fixing reinforcing steel bar 6 penetrates through the fixing plate 5 on the other side, and two ends of the fixing reinforcing steel bar 6 are locked through the anchor 61; injecting high-performance mortar into the material injection pore canal 22 until the high-performance mortar overflows and flows out of the material discharge pore canal 23;
step 6: and 5, repeating the step until the joint adopts a socket structure prefabricated assembly pier made of cast-in-situ UHPC material to reach the elevation.
In summary, the joint provided by the invention adopts the socket structure of cast-in-situ UHPC material to prefabricate and assemble the pier, and through the design of tenons and mortises, dangerous accidents such as overturning and the like are prevented when the prefabricated bearing platform and the prefabricated pier are spliced, so that the stability of the structure in the construction process is improved; the bridge pier steel bars and the bearing platform steel bars are arranged, and can be bound after the tenons are inserted, so that the whole structure of the bridge pier is more stable in the installation process; the positions of the pier reinforcing bars pre-buried by two adjacent prefabricated piers can be staggered when the pier reinforcing bars are pre-buried, so that the binding is convenient; the arrangement of the steel pipe further increases the horizontal shearing resistance of the prefabricated spliced pier of the socket structure of the joint made of cast-in-situ UHPC material, and increases the safety; the arrangement of the material injection pore canal and the material discharge pore canal can facilitate the injection of the fixed material, facilitate the construction operation and increase the construction efficiency; the discharging hole channel and the injecting hole channel are arranged on the same horizontal plane, and the injecting hole channel and the pier grouting blind hole are arranged on the same horizontal plane, so that the injected fixing material can fully fill all gaps at the joint, and the stability of the whole structure is ensured; the mortar can connect tenons, bearing platform steel bars and pier steel bars which are arranged in the steel pipe pipeline into a whole, so that the stability of the whole structure is ensured, and the shearing resistance of the horizontal plane of the joint is increased; the high-performance mortar has the characteristics of high strength, corrosion resistance and good impermeability, and the high-performance mortar can enable the whole structure to have stronger tensile capacity and reliability and increase durability; through the arrangement of the protruding part, the fixing plate and the fixing reinforcing steel bars can be additionally arranged by the protruding part, so that the prefabricated bridge pier is preliminarily fixed by the protruding rod and the fixing reinforcing steel bars when grouting is not performed, and the construction safety is improved; the fixed steel bars bolt the tenons and the mortises, so that the stability of the structure is further improved; the fixing plate can simultaneously seal the two adjacent prefabricated piers and gaps between the prefabricated bearing platforms and the prefabricated piers, so that the filled slurry can fully fill the gaps, and the stability of the structure is ensured; the prefabricated spliced pier combining the socket structure and the cast-in-situ UHPC is adopted, the central position of the spliced pier adopts the socket structure, the supporting effect on the upper-section prefabricated pier can be achieved during construction, UHPM is adopted for bonding between tenons and mortises, the bonding area is large, the bonding effect is better than that of the traditional high-strength mortar plane joint or structural adhesive dry joint, and the shear strength of the spliced part can be improved; the UHPC with high strength, corrosion resistance, wear resistance and good impermeability is used as the cast-in-situ material, so that the integrity and the earthquake resistance of the cast-in-situ UHPC material socket structure prefabricated assembly pier of the connector can be improved.
The foregoing description is only illustrative of the present invention and is not intended to limit the scope of the invention, and all equivalent changes made by the specification and drawings of the present invention, or direct or indirect application in the relevant art, are included in the scope of the present invention.
Claims (7)
1. The prefabricated spliced pier is characterized by comprising a prefabricated bearing platform and prefabricated piers, wherein the prefabricated piers are arranged on the prefabricated bearing platform, and a plurality of the prefabricated piers are arranged in a stacked manner; the top surface of the prefabricated bearing platform is provided with a protruding part, the protruding part and the top surface of the prefabricated pier are provided with mortises, the bottom of the prefabricated pier is provided with tenons, and the sizes of the tenons are matched with the mortises; the depth of the mortise is smaller than the length of the tenon protrusion;
pier steel bars are embedded in the prefabricated pier, and two ends of each pier steel bar extend out of the top surface and the bottom surface of the prefabricated pier; the length of the pier reinforcing steel bars extending out of the bottom surface of the prefabricated pier is smaller than the protruding length of the tenons, and the positions of the pier reinforcing steel bars embedded in the prefabricated piers of two adjacent piers are staggered;
bearing platform reinforcing steel bars are pre-buried in the prefabricated bearing platform, the bearing platform reinforcing steel bars extend out of the top surface of the prefabricated bearing platform, and the bearing platform reinforcing steel bars on the prefabricated bearing platform and pier reinforcing steel bars at the bottom of the prefabricated pier are staggered with each other;
the fixing plate is respectively arranged on the outer wall of the joint of the protruding part and the prefabricated pier and the outer walls of the joints of the two prefabricated piers;
the side walls of the protruding parts and the side walls of the upper end and the lower end of the precast pier are respectively provided with a fixed through hole, the axes of the fixed through holes are mutually parallel, fixed reinforcing steel bars are arranged in the fixed through holes, and the two ends of the fixed reinforcing steel bars extend out of the fixed through holes and penetrate through the fixed plates.
2. The joint of claim 1, wherein the tongue and groove is embedded with a steel pipe, the tenon size is matched with the steel pipe, and the tenon is embedded in the steel pipe.
3. The joint of claim 2, wherein the prefabricated pier is formed by adopting a socket structure made of cast-in-situ UHPC material, and the bottom side wall of the prefabricated pier is provided with a material injection pore canal and a material discharge pore canal, and the material injection pore canal and the material discharge pore canal are communicated with the side wall of the bottom of the prefabricated pier and the bottom surface of the prefabricated pier.
4. A prefabricated spliced pier of socket joint construction using cast-in-situ UHPC material according to claim 3, wherein the discharge hole and the injection hole are disposed at the same horizontal plane.
5. A socket type prefabricated spliced pier adopting a cast-in-situ UHPC material as a joint according to claim 3, wherein mortar is filled in gaps between the steel pipe and the tenons, gaps at the joints of the adjacent prefabricated piers and gaps at the joints of the prefabricated piers and the prefabricated bearing platforms.
6. The joint of claim 5, wherein the mortar is a high performance mortar.
7. The joint of claim 1, further comprising an anchor disposed at an end of the fixed rebar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810934492.XA CN109024249B (en) | 2018-08-16 | 2018-08-16 | Socket type structure prefabricated assembly pier with joint made of cast-in-situ UHPC material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810934492.XA CN109024249B (en) | 2018-08-16 | 2018-08-16 | Socket type structure prefabricated assembly pier with joint made of cast-in-situ UHPC material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109024249A CN109024249A (en) | 2018-12-18 |
| CN109024249B true CN109024249B (en) | 2023-10-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810934492.XA Active CN109024249B (en) | 2018-08-16 | 2018-08-16 | Socket type structure prefabricated assembly pier with joint made of cast-in-situ UHPC material |
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| CN (1) | CN109024249B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110863424B (en) * | 2019-12-04 | 2021-12-10 | 长安大学 | Vertical tenon and horizontal anchor splicing structure of pier and capping beam and construction method |
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| CN208965395U (en) * | 2018-08-16 | 2019-06-11 | 福建工程学院 | A kind of connector uses the spigot-and-socket construction precast assembly bridge pier of cast-in-place UHPC material |
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| CN107905092A (en) * | 2017-11-02 | 2018-04-13 | 东南大学 | A kind of prefabricated assembled bridge pier and its assembling and construction method |
| CN108049305A (en) * | 2018-01-31 | 2018-05-18 | 福建工程学院 | The splicing construction and joining method of a kind of precast pier and prefabricated cushion cap |
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