CN110965459A - Saline-alkali corrosion scouring resistant pier protection device and construction method thereof - Google Patents
Saline-alkali corrosion scouring resistant pier protection device and construction method thereof Download PDFInfo
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- CN110965459A CN110965459A CN201911228526.4A CN201911228526A CN110965459A CN 110965459 A CN110965459 A CN 110965459A CN 201911228526 A CN201911228526 A CN 201911228526A CN 110965459 A CN110965459 A CN 110965459A
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- pier
- saline
- foundation
- transition layer
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- 238000005260 corrosion Methods 0.000 title claims abstract description 32
- 230000007797 corrosion Effects 0.000 title claims abstract description 29
- 239000003513 alkali Substances 0.000 title claims abstract description 24
- 238000010276 construction Methods 0.000 title claims abstract description 14
- 238000009991 scouring Methods 0.000 title claims abstract description 11
- 230000007704 transition Effects 0.000 claims abstract description 29
- 239000004567 concrete Substances 0.000 claims abstract description 23
- 230000003628 erosive effect Effects 0.000 claims abstract description 15
- 230000001681 protective effect Effects 0.000 claims abstract description 9
- 238000000034 method Methods 0.000 claims abstract description 5
- 238000004519 manufacturing process Methods 0.000 claims description 16
- 238000007789 sealing Methods 0.000 claims description 5
- 239000000945 filler Substances 0.000 claims description 4
- 230000002787 reinforcement Effects 0.000 claims description 3
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims 1
- 239000011780 sodium chloride Substances 0.000 claims 1
- 230000006378 damage Effects 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 4
- 238000001514 detection method Methods 0.000 abstract description 3
- 239000004593 Epoxy Substances 0.000 description 12
- 239000004570 mortar (masonry) Substances 0.000 description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 3
- 229910001653 ettringite Inorganic materials 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 239000013078 crystal Substances 0.000 description 2
- 230000000670 limiting effect Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000009417 prefabrication Methods 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 229910052936 alkali metal sulfate Inorganic materials 0.000 description 1
- 150000004645 aluminates Chemical class 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- RKTYLMNFRDHKIL-UHFFFAOYSA-N copper;5,10,15,20-tetraphenylporphyrin-22,24-diide Chemical compound [Cu+2].C1=CC(C(=C2C=CC([N-]2)=C(C=2C=CC=CC=2)C=2C=CC(N=2)=C(C=2C=CC=CC=2)C2=CC=C3[N-]2)C=2C=CC=CC=2)=NC1=C3C1=CC=CC=C1 RKTYLMNFRDHKIL-UHFFFAOYSA-N 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000002829 reductive effect Effects 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229910021487 silica fume Inorganic materials 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 229910052882 wollastonite Inorganic materials 0.000 description 1
- 239000010456 wollastonite Substances 0.000 description 1
Images
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
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
- E02B3/20—Equipment for shipping on coasts, in harbours or on other fixed marine structures, e.g. bollards
- E02B3/26—Fenders
-
- 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 belongs to the field of pier protection, and relates to a pier protection device resistant to saline-alkali corrosive erosion and a construction method thereof, wherein the pier protection device is arranged outside a pier and comprises a protection cylinder, and the protection cylinder is arranged outside the pier in a surrounding manner and is tightly attached to the pier; the transition layer is arranged, one end of the transition layer is tightly attached to the outer side of the pile casing and is consistent with the cross section size and the shape of the pile casing, the other end of the transition layer is tightly attached to the foundation and is consistent with the cross section size and the shape of the foundation, and the cross section size of the transition layer is linearly transited from one end of the transition layer to the other end of the transition layer. The invention can physically isolate the pier corrosion source, can play a better anti-corrosion effect and simultaneously does not influence the pier stress completely; the invention enables the bridge pier to have the anti-scouring performance; the method can achieve the purpose of nondestructive detection of the corrosion degree of the pier by detecting the damage form of the protective cylinder; the invention can also play a role in replacing the pouring template during the pouring of the pier concrete.
Description
Technical Field
The invention belongs to the field of pier protection, and relates to a pier protection device resistant to saline-alkali corrosive scouring and a construction method thereof.
Background
Concrete sulfate erosion is an aggressive medium damage with relatively high hazard, is one of important factors causing pier corrosion, and is an environmental water erosion with the most complicated influencing factors and the greatest hazard. In the salinized area in northwest of China, a large amount of sulfate exists in soil, and concrete possibly has sulfate, so that the concrete is severely eroded under various conditions, the concrete is expanded, cracked and peeled, and the like, and the strength of the concrete and the strength of a pier are lost. The production of ettringite, gypsum and wollastonite in the sulfate erosion process generates collision and damage effects on concrete, and the corrosion mechanism is mainly divided into the following aspects:
1. ettringite corrosion. When the concentration of sulfate radicals in the attack solution is within a certain range, ettringite (calcium trisulfide-type hydrated aluminate) is produced, which is in the form of needle-like crystals in mineral form and is pressed against each other in radial tetragonal growth to generate a great deal of internal stress, which causes the structure to be damaged.
2. Corrosion of the carbosulfanite. After such corrosion, the concrete is not obviously expanded in volume, and white muddy corrosion products are filled in the pores and cracks of the corroded concrete.
3. Alkali metal sulfate crystalline form. The attack of concrete by sulfate produces salts with crystal water, which not only generate extreme crystallization pressure but also invade structures causing the destruction and separation of concrete.
4. MGSO4 erodes-crystalline form. The MGSO4 corrosion is the most destructive to concrete corrosion, and even silica-fume concrete is difficult to resist the corrosion of MGSO4, mainly because sulfate radicals and MG are corrosion sources, and the two are superposed with each other to form more serious consistent corrosion.
Disclosure of Invention
In view of the above, the present invention provides a bridge pier protection device resistant to saline-alkali corrosive erosion and a construction method thereof, which can reduce corrosion of sulfate to bridge piers and prolong the service life of bridges.
In order to achieve the purpose, the invention provides the following technical scheme:
a pier protection device resistant to saline-alkali corrosive erosion is arranged on the outer side of a pier, the pier is coaxially arranged on a foundation, and the cross sectional area of the pier is smaller than that of the foundation; the transition layer is arranged, one end of the transition layer is tightly attached to the outer side of the pile casing and is consistent with the cross section size and the shape of the pile casing, the other end of the transition layer is tightly attached to the foundation and is consistent with the cross section size and the shape of the foundation, and the cross section size of the transition layer is linearly transited from one end of the transition layer to the other end of the transition layer.
Optionally, the casing comprises a plurality of coaxially arranged prefabricated segments, and adjacent prefabricated segments are connected.
Optionally, the adjacent prefabricated segments comprise a cylinder body, and a first connecting part and a second connecting part which are arranged at two ends of the cylinder body; the shape of the second connecting part is matched with that of the first connecting part; the size and the shape of the cross section of the first connecting part matched with the second connecting part are consistent with those of the cross section of the cylinder.
Optionally, the first connecting portion is in clearance fit with the second connecting portion, and a sealing layer is filled in the clearance.
Optionally, the foundation protection device further comprises a foundation protection cylinder sleeved outside the foundation.
Optionally, the casing uses epoxy concrete or epoxy mortar with good saline-alkali corrosion resistance as a base material.
A construction method of a bridge pier protection device resistant to saline-alkali corrosive scouring is used for constructing the bridge pier protection device resistant to saline-alkali corrosive scouring, and comprises the following steps:
constructing a foundation;
installing a protective cylinder on the foundation;
manufacturing a pier in the pile casing;
and constructing a transition layer outside the pile casing.
Optionally, the protective cylinder is made of saline-alkali corrosion resistant epoxy mortar cast in situ between a detachable inner mold and a detachable outer mold which are coaxially arranged; the step of installing the pile casing on the basis comprises the following steps:
installing an inner mold and an outer mold;
pouring epoxy mortar in the hollow layer between the inner mold and the outer mold;
removing the inner mold and the outer mold;
optionally, the casing comprises a plurality of coaxially arranged prefabricated epoxy mortar cylindrical segments, and adjacent prefabricated segments are connected; the steps of installing the pile casing on the basis and manufacturing the bridge pier in the pile casing comprise the following steps:
installing prefabricated segments on a foundation;
manufacturing piers in the prefabricated segments;
installing another prefabricated segment on the prefabricated segment;
manufacturing piers in the prefabricated segments;
and repeating the steps of mounting another prefabricated segment on the prefabricated segment and manufacturing a pier in the prefabricated segment.
Optionally, the step of "making a pier in the pile casing" includes:
mounting a pier reinforcement cage;
and pouring pier concrete.
The invention has the beneficial effects that:
1. the device is used for physically isolating the pier corrosion source, can achieve a better anti-corrosion effect and simultaneously does not influence the pier stress completely;
2. the device enables the bridge pier to have anti-scouring performance;
3. the device can achieve the purpose of nondestructive detection of the corrosion degree of the pier through the detection of the damage form of the protective cylinder;
4. the device can also play a role in replacing a pouring template during the pouring of the concrete of the pier;
5. because the thermal expansion coefficients of the epoxy mortar with good saline-alkali corrosion resistance and the concrete are similar, the high-strength epoxy mortar and the concrete have good working performance under the environment of a complex temperature field.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and combinations particularly pointed out hereinafter.
Drawings
For the purposes of promoting a better understanding of the objects, aspects and advantages of the invention, reference will now be made to the following detailed description taken in conjunction with the accompanying drawings in which:
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;
FIG. 3 is a cross-sectional view taken along line B-B of FIG. 1;
FIG. 4 is an enlarged view of area C of FIG. 1;
FIG. 5 is a schematic structural view of a prefabricated segment;
FIG. 6 is a top view of a prefabricated segment;
FIG. 7 is a flow chart of a first construction method;
FIG. 8 is a flow chart of a second construction method.
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention in a schematic way, and the features in the following embodiments and examples may be combined with each other without conflict.
Wherein the showings are for the purpose of illustrating the invention only and not for the purpose of limiting the same, and in which there is shown by way of illustration only and not in the drawings in which there is no intention to limit the invention thereto; to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "front", "rear", etc., based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of description, but it is not an indication or suggestion that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes, and are not to be construed as limiting the present invention, and the specific meaning of the terms may be understood by those skilled in the art according to specific situations.
Referring to fig. 1-8, the reference numbers in the figures refer to the following elements: the bridge pier comprises a bridge pier 1, a pile casing 2, a transition layer 3, a foundation 4, a prefabricated segment 5, a sealing layer 6, a first connecting part 7, a second connecting part 8, a cylinder 9, an inner mold 10, an outer mold 11 and a filler 12.
The invention relates to a protective device for a pier 1 resistant to saline-alkali corrosive erosion, which is arranged on the outer side of the pier 1, wherein the pier 1 is coaxially arranged on a foundation 4, and the cross section area of the pier 1 is smaller than that of the foundation 4, and comprises a protective cylinder 2, wherein the protective cylinder 2 is arranged outside the pier 1 in a surrounding manner and is tightly attached to the pier 1; still include transition layer 3, 3 one end of transition layer hugs closely and protects a 2 outsides and unanimous with the cross section size, the shape of a 2, and the other end hugs closely basis 4 and unanimous with the cross section size, the shape of basis 4, and the cross sectional dimension of transition layer 3 is from its one end linear transition to the other end.
Optionally, the casing 2 comprises a plurality of prefabricated segments 5 arranged coaxially, and adjacent prefabricated segments 5 are connected; the adjacent prefabricated sections 5 comprise a cylinder 9, and a first connecting part 7 and a second connecting part 8 which are arranged at two ends of the cylinder 9; the shape of the second connecting part 8 is matched with that of the first connecting part 7; the size and the shape of the cross section of the first connecting part 7 and the second connecting part 8 after matching are consistent with those of the cross section of the cylinder 9; the first connecting part 7 is in clearance fit with the second connecting part 8, and a sealing layer 6 is filled in the clearance; the device also comprises a foundation pile casing sleeved outside the foundation 4; the protecting cylinder 2 comprises an inner die 10, an outer die 11 and a hollow layer, wherein the inner die 10 and the outer die 11 are coaxially arranged, and the hollow layer is arranged between the inner die 10 and the outer die 11.
The invention also relates to a construction method of the bridge pier 1 protection device resistant to saline-alkali corrosive scouring, which comprises the following steps:
constructing a foundation 4;
a pile casing 2 is arranged on the foundation 4;
manufacturing a pier 1 in the pile casing 2;
and constructing a transition layer 3 outside the pile casing 2.
Optionally, the casing 2 includes an inner mold 10, an outer mold 11, and a hollow layer disposed between the inner mold 10 and the outer mold 11, which are coaxially disposed; the step of installing the casing 2 on the foundation 4 comprises the following steps:
installing the inner mold 10;
installing an outer die 11;
the hollow layer is filled with a filler 12.
Optionally, the casing 2 comprises a plurality of prefabricated segments 5 arranged coaxially, and adjacent prefabricated segments 5 are connected; the steps of installing the pile casing 2 on the foundation 4 and manufacturing the pier 1 in the pile casing 2 comprise the following steps:
mounting prefabricated segments 5 on the foundation 4;
manufacturing a pier 1 in the prefabricated segment 5;
mounting another prefabricated segment 5 on the prefabricated segment 5;
manufacturing a pier 1 in the prefabricated segment 5;
the steps of "installing another prefabricated segment 5 on the prefabricated segment 5" and "fabricating the pier 1 within the prefabricated segment 5" are repeated.
Optionally, the step of "making the pier 1 in the pile casing 2" includes:
installing a steel reinforcement framework of the pier 1;
pouring concrete for the pier 1.
The invention aims to prevent a pier 1 in a salinized area from being corroded by river water, and a pier 1 protection device for isolating corrosive water flow from the pier 1 is prepared by using high-strength epoxy mortar with strong salt and alkali corrosion resistance. Compared with the conventional surface coating type anti-corrosion measure, the device has certain thickness and strength, can resist static corrosion, can resist scouring of corrosive river water and sand and stones in the river water, and has longer corrosion resistance life. The protective device can also downwards probe for 3-5m while protecting the pier 1, and a part of foundation 4 is protected from saline-alkali corrosion through the foundation pile casing. The pile casing 2 can be made of high-strength epoxy mortar, the pile casing 2 can be made in a prefabrication mode, prefabricated sections 5 with the length of 3-5m are machined in a prefabrication field in advance according to the diameter of the pier 1, and the thickness of the prefabricated sections 5 is 10-20 cm. The invention can replace the original concrete pouring template of the pier 1. A sealing layer 6 is arranged between the adjacent prefabricated segments 5 and is bonded by high-strength epoxy mortar, and a transition layer 3 between the pier 1 and the foundation 4 is also made of the high-strength epoxy mortar.
Two construction methods of the invention are given below:
the construction method comprises the following steps:
determining the thickness of the pile casing 2 according to the corrosion severity of the place where the bridge is located, and designing the height of the pile casing 2 according to the highest water level line;
secondly, determining the size of the prefabricated segment 5 according to the section form of the pier 1 and the size of the pier 1 given by a design drawing;
thirdly, manufacturing a prefabricated section 5 in a prefabricated field;
fourthly, a foundation pile casing is arranged on the foundation 4;
(V) installing a first prefabricated segment 5;
sixthly, installing a steel bar framework of the pier 1 in the first prefabricated section 5;
(seventh) pouring concrete for the pier 1 in the first prefabricated segment 5;
(eight) installing another prefabricated segment 5 above the prefabricated segment 5;
ninthly, installing a steel bar framework of the pier 1 in the prefabricated segment 5 installed in the step (eight);
(ten) pouring concrete of the pier 1 into the prefabricated segment 5 installed in the step (eight);
and (eleventh) repeating the steps (eight), (nine) and (ten) until the construction is finished.
The second construction method comprises the following steps:
determining the thickness of the pile casing 2 according to the corrosion severity of the place where the bridge is located, and designing the height of the pile casing 2 according to the highest water level line;
secondly, determining the size of the prefabricated segment 5 according to the section form of the pier 1 and the size of the pier 1 given by a design drawing, wherein the size comprises the size of an inner die 10 and the size of an outer die 11;
(III) preparing an inner die 10 and an outer die 11;
fourthly, a foundation pile casing is arranged on the foundation 4;
fifthly, mounting the inner die 10 and the outer die 11 on the foundation 4;
sixthly, pouring a filler 12 (epoxy mortar) between the inner die 10 and the outer die 11;
seventhly, after the mortar of the pile casing 2 is cured to a certain age, constructing a reinforced concrete structure of the pier 1;
and (eighthly), constructing a transition layer 3 between the pier 1 and the foundation 4, and achieving the purpose of smooth transition of the pile casing 2 between the pier 1 and the foundation 4.
Finally, the above embodiments are only intended to illustrate the technical solutions of the present invention and not to limit the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the claims of the present invention.
Claims (10)
1. A pier protection device resistant to saline-alkali corrosive erosion is arranged on the outer side of a pier, the pier is coaxially arranged on a foundation, and the cross sectional area of the pier is smaller than that of the foundation; the transition layer is arranged, one end of the transition layer is tightly attached to the outer side of the pile casing and is consistent with the cross section size and the shape of the pile casing, the other end of the transition layer is tightly attached to the foundation and is consistent with the cross section size and the shape of the foundation, and the cross section size of the transition layer is linearly transited from one end of the transition layer to the other end of the transition layer.
2. The bridge pier protecting device resistant to saline and alkaline corrosive scour of claim 1, wherein the casing comprises a plurality of coaxially arranged prefabricated segments, adjacent prefabricated segments being connected.
3. The bridge pier protecting device resistant to saline-alkali corrosive erosion as claimed in claim 2, wherein the adjacent prefabricated segments comprise a cylinder body and a first connecting part and a second connecting part arranged at both ends of the cylinder body; the shape of the second connecting part is matched with that of the first connecting part; the size and the shape of the cross section of the first connecting part matched with the second connecting part are consistent with those of the cross section of the cylinder.
4. The bridge pier protecting device resistant to saline-alkaline corrosive erosion of claim 3, wherein the first connecting portion is in clearance fit with the second connecting portion, and the clearance is filled with a sealing layer.
5. The bridge pier protecting device resistant to saline-alkali corrosive erosion as claimed in claim 1, further comprising a foundation casing sleeved outside the foundation.
6. The bridge pier protecting device resistant to saline-alkali corrosive erosion as claimed in claim 1, wherein the casing comprises an inner mold, an outer mold and a hollow layer arranged between the inner mold and the outer mold, which are coaxially arranged.
7. A construction method of a bridge pier protection device resistant to saline-alkali corrosion scouring, which is used for constructing the bridge pier protection device resistant to saline-alkali corrosion scouring as claimed in any one of claims 1 to 6, and comprises the following steps:
constructing a foundation;
installing a protective cylinder on the foundation;
manufacturing a pier in the pile casing;
and constructing a transition layer outside the pile casing.
8. The method for constructing a pier protection device resistant to saline-alkali corrosive erosion as claimed in claim 7, wherein the casing comprises an inner mold, an outer mold and a hollow layer, wherein the inner mold and the outer mold are coaxially arranged, and the hollow layer is arranged between the inner mold and the outer mold; the step of installing the pile casing on the basis comprises the following steps:
installing an internal mold;
installing an outer die;
and filling the filler into the hollow layer.
9. The method for constructing a pier protecting device resistant to saline-alkali corrosive erosion as claimed in claim 7, wherein the casing comprises a plurality of prefabricated segments arranged coaxially, and adjacent prefabricated segments are connected; the steps of installing the pile casing on the basis and manufacturing the bridge pier in the pile casing comprise the following steps:
installing prefabricated segments on a foundation;
manufacturing piers in the prefabricated segments;
installing another prefabricated segment on the prefabricated segment;
manufacturing piers in the prefabricated segments;
and repeating the steps of mounting another prefabricated segment on the prefabricated segment and manufacturing a pier in the prefabricated segment.
10. The method for constructing a pier protection device resistant to saline-alkali corrosive erosion as claimed in claim 7, wherein the step of "making piers in a casing" comprises:
mounting a pier reinforcement cage;
and pouring pier concrete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911228526.4A CN110965459A (en) | 2019-12-04 | 2019-12-04 | Saline-alkali corrosion scouring resistant pier protection device and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911228526.4A CN110965459A (en) | 2019-12-04 | 2019-12-04 | Saline-alkali corrosion scouring resistant pier protection device and construction method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN110965459A true CN110965459A (en) | 2020-04-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911228526.4A Pending CN110965459A (en) | 2019-12-04 | 2019-12-04 | Saline-alkali corrosion scouring resistant pier protection device and construction method thereof |
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| CN108396640A (en) * | 2018-04-23 | 2018-08-14 | 南昌大学 | A kind of assembly concrete pier column structure |
| CN211848868U (en) * | 2019-12-04 | 2020-11-03 | 中交路桥建设有限公司 | Bridge pier protection device resistant to saline-alkali corrosive scouring |
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