CN217053422U - Device for quickly constructing bridge substructure in semi-shore semi-water narrow water area - Google Patents
Device for quickly constructing bridge substructure in semi-shore semi-water narrow water area Download PDFInfo
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- CN217053422U CN217053422U CN202122767135.9U CN202122767135U CN217053422U CN 217053422 U CN217053422 U CN 217053422U CN 202122767135 U CN202122767135 U CN 202122767135U CN 217053422 U CN217053422 U CN 217053422U
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Abstract
The utility model relates to a device of bridge substructure is under construction fast in half bank of half narrow and small waters belongs to bridge foundation construction technical field under water, include: the pile hanging bracket comprises a plurality of steel casing cylinders, a plurality of steel casing cylinders are arranged on the steel casing cylinders, the steel casing cylinders are inserted and beaten at set positions of a bridge foundation and are arranged in a matrix manner, and pile hanging brackets are fixedly arranged on the outer wall of each steel casing cylinder; drilling platform, this drilling platform are the horizontal direction and fix on hanging a stake bracket and lie in the top that a steel protected a section of thick bamboo, drilling platform is last to be equipped with the through-hole that penetrates a steel and protect a section of thick bamboo. The utility model provides a construction equipment all fixes being equipped with a string stake bracket at the outer wall of a steel casing, installs the drilling platform that prefabricated into whole in advance on the string stake bracket and supplies drilling to use, and a steel casing is as drilling platform's basis. And a drilling platform formed by additionally inserting and driving steel pipe piles, installing distribution beams, bridge decks and other structures is not needed, so that the construction cost and the construction period are greatly saved.
Description
Technical Field
The application relates to the technical field of underwater bridge foundation construction, in particular to a device for quickly constructing a bridge substructure in a semi-shore semi-water narrow water area.
Background
At present, before pile foundation construction of deep water bridge construction is carried out on a large bridge pier column or a super large bridge pier column, a temporary drilling platform needs to be provided for pile foundation construction, construction machinery needs to be arranged on the drilling platform, and construction load needs to be borne, so that the large bridge pier column or the super large bridge pier column needs to have sufficient rigidity, strength and stability, and meanwhile, a steel casing needs to be kept fixed to ensure the perpendicularity of the pile foundation and meet the requirements of subsequent bridge construction.
In the related art, the traditional construction method of the bridge substructure comprises the following steps: 1) driving the steel pipe piles into a riverbed, establishing a drilling platform, constructing the drilling piles on the drilling platform, and removing the drilling platform in the range of the steel sheet pile cofferdam after the construction of the drilling piles is finished; inserting and driving the steel pipe pile, installing an inner cofferdam support, pumping water from the inner cofferdam bottom seal, cutting off the steel casing, chiseling off the pile head and constructing a bearing platform. 2) Firstly, driving a steel pipe pile into a riverbed, establishing a drilling platform, constructing the drilling pile on the drilling platform, dismantling the drilling platform in the range of a steel sheet pile cofferdam after the construction of the drilling pile is finished, welding a bracket on a steel pile casing above the water surface, welding a construction cofferdam inner support on the bracket, connecting four steel pile casings at four corners to be high, installing and transferring a system on the steel pile casing, hoisting the whole support in the cofferdam by using a jack, dismantling the bracket, transferring the cofferdam inner support to a design elevation, fixing the cofferdam inner support and dismantling the transferring system. And (3) inserting and driving steel sheet piles by taking the inner support of the cofferdam as a guide, pumping water from the inner bottom sealing of the cofferdam, cutting off the steel pile casings, chiseling off pile heads and constructing a bearing platform.
For the underwater bridge foundation constructed by the traditional method, a drilling platform needs to be established firstly, the establishment of the drilling platform needs to consume several months, and the method is not suitable for projects with tight construction periods. The traditional method for constructing the underwater bridge foundation needs a wide water area, is convenient for large-scale equipment and ship stations, and is difficult to construct in a half-shore semi-water construction area and a narrow water area construction area.
Disclosure of Invention
The embodiment of the application provides a device for rapidly constructing a bridge substructure in a semi-shore semi-water narrow water area, and aims to solve the problems that in the related art, drilling platforms need to be built firstly in the underwater bridge foundation construction, and the building of the drilling platforms needs to consume several months, so that the construction efficiency is low.
The first aspect of the embodiment of the application provides at the device of the narrow and small waters quick construction bridge substructure of half bank half water, include:
the pile hanging bracket comprises a plurality of steel casing barrels, a pile hanging bracket and a plurality of steel casing barrels, wherein the plurality of steel casing barrels are inserted into a set position of a bridge foundation, and the outer wall of each steel casing barrel is fixedly provided with a pile hanging bracket;
drilling platform, drilling platform is the horizontal direction and fixes on hanging a stake bracket and be located the top that a steel protected a section of thick bamboo, drilling platform is last to be equipped with the through-hole that penetrates a steel and protect a section of thick bamboo.
In some embodiments: the drilling platform is characterized by further comprising a plurality of platform piles which are inserted and driven around the drilling platform and used for supporting the drilling platform, and the tops of the platform piles are fixedly connected with the edge of the drilling platform.
In some embodiments: a plurality of supporting piles are inserted and driven around the drilling platform, the distance between each supporting pile and the drilling platform is greater than that between each platform pile and the drilling platform, and a connecting system is arranged between each two adjacent supporting piles and each platform pile;
and a cofferdam inner support for supporting the steel sheet pile cofferdam is arranged on a connecting system between the supporting pile and the platform pile, and a latticed steel casing positioning guide frame is fixedly arranged at the top of the cofferdam inner support.
In some embodiments: and the supporting piles and the platform piles are provided with distribution beam lowering systems for synchronously lowering the inner support of the cofferdam to a set elevation, the distribution beam lowering systems are provided with four groups, and the four groups of distribution beam lowering systems are symmetrically arranged along the central line of the inner support of the cofferdam.
In some embodiments: and a plurality of fore shaft steel sheet piles are inserted and punched around the inner support of the cofferdam, the fore and aft connection of the fore shaft steel sheet piles forms a water-blocking steel sheet pile cofferdam, and the inner wall of the fore shaft steel sheet pile is attached to the inner support of the cofferdam.
In some embodiments: the inner support in the cofferdam is of a rectangular frame structure, the inner support in the cofferdam comprises a left half cofferdam inner support and a right half cofferdam inner support, the left half cofferdam inner support and the right half cofferdam inner support are both of 'Contraband' shaped structures, and the left half cofferdam inner support and the right half cofferdam inner support are formed by welding connection.
In some embodiments: the drilling platform at least comprises two prefabricated drilling platforms, and the drilling platform is formed by splicing the two adjacent prefabricated drilling platforms end to end.
In some embodiments: and a drilling machine for drilling in the steel casing is arranged on the drilling platform.
In some embodiments: the side of drilling platform is equipped with the landing stage and inserts the mast that beats the steel and protect a section of thick bamboo and hang or the floating crane, the mast hangs and is located the bank side, the floating crane is located the waters side.
In a second aspect, there is provided a method for rapidly constructing a bridge substructure in a semi-coastal semi-aqueous narrow water area, the method using the apparatus for rapidly constructing a bridge substructure in a semi-coastal semi-aqueous narrow water area according to any of the above embodiments, the method comprising the steps of:
in order to quickly construct a temporary supporting structure for supporting an inner support of a cofferdam in a semi-shore semi-water environment, a platform pile and a supporting pile are driven by a mast crane on the shore side and/or a floating crane on the water area side, and a welding connection system is used as the temporary supporting structure for the inner support of the cofferdam between two adjacent platform piles and the supporting pile;
in order to quickly assemble and lift the inner support of the cofferdam in the environment of a narrow water area, the step uses a double-assembly barge as an assembling field of the inner support of the cofferdam in the water area, lifts the left half cofferdam inner support and the right half cofferdam inner support of the processed inner support of the cofferdam to a connecting system between a platform pile and a supporting pile in a grading manner, and welds the left half cofferdam inner support and the right half cofferdam inner support into a whole;
in order to quickly and accurately position and insert and beat the steel casing in the semi-shore semi-water environment, a latticed steel casing positioning guide frame is fixedly installed at the top of an inner support of the cofferdam, and the steel casings are inserted and beaten one by one under the positioning of the steel casing positioning guide frame by utilizing a mast crane and a floating crane;
in order to construct no steel pipe pile and quickly build a drilling platform in the environment of a narrow water area, a pile hanging bracket is fixedly installed on the outer wall of the steel casing at the designed height, and a plurality of prefabricated drilling platforms of the drilling platform are hoisted on the pile hanging bracket and the platform pile in a grading and blocking manner by using a floating crane for drilling;
in order to synchronously lower the inner support of the cofferdam during drilling to shorten the construction period, the drilling construction is carried out in a steel casing on the installed first prefabricated drilling platform by using a drilling machine, and meanwhile, the lowering construction of the inner support of the cofferdam and the lifting installation construction of the rest prefabricated drilling platforms are finished by using a distribution beam lowering system;
in order to provide a waterless operation environment when a bridge lower structure is constructed, in the step, after the inner support in the cofferdam is lowered to a set elevation, the inner support in the cofferdam is welded and connected with the platform pile, and a plurality of fore-and-aft connected fore-and-aft locking steel sheet piles are inserted and driven around the inner support in the cofferdam to complete the construction of the steel sheet pile cofferdam;
in order to provide a waterless working face environment when a bridge substructure is constructed, after the construction of both the drilled piles and the steel sheet pile cofferdams is completed, bottom sealing concrete is poured at the bottom of the steel sheet pile cofferdam, water is pumped in the steel sheet pile cofferdam to form a waterless environment, steel protection cylinders at the upper parts of the bottom sealing concrete are cut off, and reinforcing steel bar binding construction bearing platforms and pier bodies are constructed.
The beneficial effect that technical scheme that this application provided brought includes:
the embodiment of the application provides a device for quickly constructing a bridge substructure in a semi-water narrow water area on a half bank, and the construction device is provided with a plurality of steel casing cylinders, the plurality of steel casing cylinders are inserted and driven at set positions of a bridge foundation, and the outer wall of each steel casing cylinder is fixedly provided with a pile hanging bracket; and the drilling platform is fixed on the pile hanging bracket in the horizontal direction and is positioned at the top end of the steel casing, and a through hole penetrating into the steel casing is formed in the drilling platform.
Consequently, the construction equipment of this application all fixes being equipped with a string stake bracket at the outer wall that a steel protected section of thick bamboo, and the installation is prefabricated drilling platform in advance on hanging the stake bracket and supplies drilling to use, and a steel protects a base that not only provides the protection but also regard as drilling platform for the bored concrete pile. When the drilling platform is constructed, the drilling platform formed by additionally inserting and driving the steel pipe piles, installing the distribution beams, the bridge deck and other structures is not needed, so that the construction cost and the construction period are greatly saved. The drilling platform can be assembled in a partition and block mode, the purpose of drilling as soon as possible can be achieved, and the large floating crane cannot stand in a narrow water area, so that the small floating crane can be used for hoisting in a partition and block mode. According to the construction method, the inner support of the cofferdam is lifted and lowered while the bored pile is constructed, the steel sheet pile cofferdam is constructed, and the construction period is greatly shortened.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the description below are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a front view of a construction apparatus according to an embodiment of the present application;
FIG. 2 is a plan view showing the structure of a working apparatus according to an embodiment of the present invention;
FIG. 3 is a front view of the structure of step 1 of the construction method according to the embodiment of the present application;
FIG. 4 is a top view of the structure of step 1 of the construction method of the embodiment of the present application;
FIG. 5 is a front view of the structure of step 2 of the construction method according to the embodiment of the present application;
FIG. 6 is a top view of the structure of step 2 of the construction method of the embodiment of the present application;
FIG. 7 is a top view of the structure of step 3 of the construction method of the embodiment of the present application;
FIG. 8 is a front view of the structure of step 4 of the construction method according to the embodiment of the present application;
FIG. 9 is a top view of the structure of step 4 of the construction method of the embodiment of the present application;
FIG. 10 is a front view of the structure of step 5 of the construction method according to the embodiment of the present application;
FIG. 11 is a top view of the structure at step 5 of the construction method according to the embodiment of the present application;
FIG. 12 is a front view of the structure of step 6 of the construction method according to the embodiment of the present application;
FIG. 13 is a top view of the structure of step 6 of the construction method of the embodiment of the present application;
FIG. 14 is a front view of the structure of step 7 of the construction method according to the embodiment of the present application;
FIG. 15 is a top view of the structure of step 7 of the construction method of the embodiment of the present application;
FIG. 16 is a front view of the structure of step 8 of the construction method according to the embodiment of the present application;
fig. 17 is a top view of the structure of step 8 of the construction method according to the embodiment of the present application.
Reference numerals are as follows:
1. a support pile; 2. piling a platform; 3. a steel casing; 4. hanging a pile bracket; 5. drilling a platform; 5a, a first prefabricated drilling platform; 5b, prefabricating a drilling platform; 5c, prefabricating a drilling platform; 6. a connecting system; 7. supporting in a cofferdam; 7a, supporting in the left half cofferdam; 7b, supporting the right half cofferdam; 8. a distribution beam lowering system; 9. locking steel sheet piles; 10. a trestle; 11. a steel casing positioning guide frame; 12. floating; 13. a mast crane; 14. sealing bottom concrete; 15. a bearing platform; 16. a pier body.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The embodiment of the application provides a device of narrow and small waters of half bank half water fast construction bridge substructure, it can solve among the relevant art underwater bridge foundation construction all need establish drilling platform earlier, drilling platform's establishment need consume several months's time, leads to the problem of the inefficiency of construction efficiency.
Referring to fig. 1 and 2, in a first aspect, an apparatus for rapidly constructing a bridge substructure in semi-coastal semi-aqueous narrow waters according to an embodiment of the present invention includes:
a steel protects a section of thick bamboo 3, this steel protects a section of thick bamboo 3 and is equipped with many, and many steel protect a section of thick bamboo 3 and insert and beat at the settlement position on bridge foundation and be the matrix arrangement, and a steel protects a section of thick bamboo 3 and provides the protection for the bored pile construction, prevents the hole that collapses. The outer wall of each steel casing 3 is fixedly provided with a pile hanging bracket 4, and the pile hanging brackets 4 are detachably connected or welded with the steel casings 3. Drilling platform 5, this drilling platform 5 are the horizontal direction and fix on hanging stake bracket 4 and lie in the top of a steel casing 3, are equipped with the through-hole that penetrates a steel casing 3 on drilling platform 5, and drilling platform 5 provides the operation platform for the bored pile construction. The side of the drilling platform 5 is provided with a trestle 10 and a mast crane 13 or a floating crane 12 for inserting and striking the steel casing 3, the mast crane 13 is positioned on the shore side, the floating crane 12 is positioned on the water area side, the mast crane 13 is used for inserting and striking the steel casing 3 close to the shore side, and the floating crane 12 is used for inserting and striking the steel casing 3 close to the water area side and lifting the drilling platform 5.
The construction equipment of this application embodiment all fixes being equipped with in the outer wall of steel pile casing 3 and hangs stake bracket 4, hangs and to prefabricate holistic drilling platform 5 confession drilling in advance and use on stake bracket 4, and steel pile casing 3 not only provides the protection for the bored pile construction, regards as drilling platform 5's basis moreover. Therefore, the drilling platform formed by additionally inserting and driving the steel pipe piles, installing the distribution beams, the bridge deck and other structures is not needed, and the construction cost and the construction period are greatly saved. The side close to the shore adopts the mast crane 13 as hoisting equipment, and the side in the water area adopts the floating crane 12 as hoisting equipment, so that the problems that the construction water area is narrow and the large hoisting equipment cannot be covered completely are solved.
In some alternative embodiments: referring to fig. 1 and 2, the embodiment of the present application provides a device for rapidly constructing a bridge substructure in a semi-coastal semi-water narrow water area, the construction device further includes a plurality of platform piles 2 inserted and driven around a drilling platform 5 for supporting the drilling platform 5, and the tops of the plurality of platform piles 2 are fixedly connected with the edge of the drilling platform 5. A plurality of platform piles 2 form a rectangular structure, and a plurality of platform piles 2 are inserted and driven at the edge of the drilling platform 5 and used for supporting the edge of the drilling platform 5.
Still having inserted and beaten many bearing piles 1 around drilling platform 5, the distance of bearing pile 1 and drilling platform 5 is greater than the distance of platform stake 2 and drilling platform 5, and is provided with the connection 6 of support 7 in the temporary support cofferdam between adjacent bearing pile 1 and the platform stake 2, and the both ends of connection 6 can be dismantled with bearing pile 1 and platform stake 2 and be connected or welded connection respectively.
A cofferdam inner support 7 for supporting a steel sheet pile cofferdam is arranged on a connecting system 6 between the supporting pile 1 and the platform pile 2, and a latticed steel casing positioning guide frame 11 is fixedly arranged at the top of the cofferdam inner support 7. The inner support 7 of the cofferdam provides an inner support for the steel sheet pile cofferdam, and the structural strength of the steel sheet pile cofferdam is improved. The steel protects a location leading truck 11 and protects a 3 for inserting the steel of beating and provide location and direction, ensures that steel protects a 3 and inserting the in-process location accuracy of beating, improves the construction precision of bored pile, improves construction quality.
In some alternative embodiments: referring to fig. 1 and 2, in the present embodiment, there is provided an apparatus for rapidly constructing a bridge substructure in a semi-water narrow water area on a half bank, where a supporting pile 1 and a platform pile 2 of the apparatus are provided with distribution beam lowering systems 8 for synchronously lowering an inner support 7 in a cofferdam to a set elevation, the distribution beam lowering systems 8 are provided with four sets, and the four sets of distribution beam lowering systems 8 are symmetrically arranged along a center line of the inner support 7 in the cofferdam.
The distributor beam lowering system 8 is prior to lowering the inner cofferdam support 7, and the inner cofferdam support 7 is temporarily fixed to the connection system 6 between the underpinning pile 1 and the platform pile 2. At this time, the support 7 in the cofferdam and the steel pile positioning guide frame provide support and positioning for inserting and beating the steel pile 3 at the top of the connecting system 6. And after the steel pile casings 3 are completely inserted and driven, arranging a distribution beam lowering system 8 for lowering the inner supports 7 of the cofferdam on the supporting piles 1 and the platform piles 2.
The distribution beam lowering system 8 comprises a distribution beam, hydraulic jacks and finish rolling deformed steel bars, two ends of the distribution beam are fixedly connected with the tops of the supporting piles 1 and the tops of the platform piles 2 respectively, the hydraulic jacks are fixed to the distribution beam, one ends of the finish rolling deformed steel bars are connected with the hydraulic jacks, the other ends of the finish rolling deformed steel bars are fixedly connected with the inner cofferdam support 7, and the hydraulic jacks lower the inner cofferdam support 7 to a set elevation through lowering the finish rolling deformed steel bars.
After the inner cofferdam support 7 is lowered to a set elevation, the inner cofferdam support 7 is welded with the platform piles 2 beside the inner cofferdam support 7 into a whole through the connecting plates and the stiffening plates, and then the distribution beam lowering system 8 is detached.
In some alternative embodiments: referring to fig. 1 and 2, the embodiment of the present application provides a device for rapidly constructing a bridge substructure in a semi-shore semi-water narrow water area, a plurality of fore-and-aft steel sheet piles 9 are inserted and punched around an inner support 7 of a cofferdam of the construction device, the fore-and-aft connection of the plurality of fore-and-aft steel sheet piles 9 forms a water-blocking steel sheet pile cofferdam, and the inner wall of the fore-and-aft steel sheet pile 9 is attached to the inner support 7 of the cofferdam. The steel sheet pile cofferdam provides a waterless environment for the underwater construction of the bridge foundation, and is convenient for the construction of the drilled piles, the bearing platforms and the pier columns of the bridge foundation.
The inner support 7 in the cofferdam is of a rectangular frame structure, the inner support 7 in the cofferdam comprises a left half cofferdam inner support 7a and a right half cofferdam inner support 7b, the left half cofferdam inner support 7a and the right half cofferdam inner support 7b are both of Contraband-shaped structures, and the left half cofferdam inner support 7a and the right half cofferdam inner support 7b are connected in a welded mode to form the inner support 7 in the cofferdam. The drilling platform 5 at least comprises three prefabricated drilling platforms, and the drilling platform 5 is formed by splicing two adjacent prefabricated drilling platforms end to end. The three prefabricated drilling platforms are a first prefabricated drilling platform 5a, a second prefabricated drilling platform 5b and a third prefabricated drilling platform 5c respectively. After the drilling platform 5 is built, a drilling machine for drilling in the steel casing 3 is arranged on the drilling platform 5.
The inner cofferdam support 7 is composed of a left half cofferdam support and a right half cofferdam support, and the drilling platform 5 at least comprises two prefabricated drilling platforms. The inner support 7 and the drilling platform 5 in the cofferdam of the split structure are convenient for the partition drilling operation, the drilling operation can be firstly carried out after the drilling platform 5 in a certain area is built, the drilling platform 5 can be continuously built in other areas, the drilling operations of the drilling platforms 5 in all areas are not interfered with one another, and the construction efficiency is improved. And because the bridge substructure of this application is in half bank half water and unable large-scale floating crane of station position in narrow and small waters, make the usable small-size floating crane of split type structure in cofferdam internal support 7 and drilling platform 5 respectively and divide time, divide the piece and carry out the hoist and mount operation in narrow and small waters, solved the construction waters narrow and small, the unable problem of entering the field of large-scale hoisting equipment.
Referring to fig. 3 to 17, a second aspect of the present embodiment provides a method for rapidly constructing a bridge substructure in semi-coastal semi-aqueous narrow waters using the apparatus for rapidly constructing a bridge substructure in semi-coastal semi-aqueous narrow waters according to any of the above embodiments, the method comprising the steps of:
step 1, referring to fig. 3 and 4, sequentially inserting and driving pier position trestle piles and mast crane foundation piles, erecting a trestle 10, installing a mast crane 13, inserting and driving platform piles 2 and supporting piles 1 in upstream water by using a shore-side mast crane 13 and a water-side floating crane 12, and welding a connecting system 6 between the adjacent platform piles 2 and the supporting piles 1 to serve as a temporary supporting structure of the cofferdam inner support 7.
Utilize the double-pin barge as the assembly place of interior support 7 in the cofferdam in the waters, support 7 in the cofferdam is assembled in two on the double-pin barge, because the waters that bridge substructure this application belonged to is narrow and small, can not use large-scale floating crane, and mast hoist 13 lifting capacity is not enough, consequently support 7 in the cofferdam is assembled in two on the double-pin barge, support 7 in the cofferdam is divided into support 7a in the left half cofferdam and support 7b in the right half cofferdam, utilize floating crane 12 at first with the already processing in the cofferdam support 7 in the left half cofferdam support 7a hoist to the connection 6 between platform pile 2 and supporting pile 1 and welded fastening.
And a latticed steel casing positioning guide frame 11 is fixedly installed at the top of the inner support 7a of the left half cofferdam, and three rows of upstream steel casings 3 are inserted one by one under the positioning of the steel casing positioning guide frame 11 by utilizing a mast crane 13 and a floating crane 12.
And fixedly mounting a latticed steel pile casing positioning guide frame 11 at the top of the right half cofferdam inner support 7b, inserting and punching five rows of downstream steel pile casings 3 one by one under the positioning of the steel pile casing positioning guide frame 11 by utilizing a mast crane 13 and a floating crane 12, welding the right half cofferdam inner support 7b and the left half cofferdam inner support 7a into a whole cofferdam inner support 7, and mounting inclined struts and cross struts in the cofferdam inner support 7.
And 4, as shown in fig. 8 and 9, while drilling in the steel casing 3 on the first prefabricated drilling platform 5a by using a drilling machine, completing the lowering construction of the inner support 7 of the cofferdam by using a distribution beam lowering system 8.
The distribution beam lowering system 8 comprises a distribution beam, hydraulic jacks and finish rolling deformed steel bars, the two ends of the distribution beam are fixedly connected with the tops of the supporting piles 1 and the platform piles 2 respectively, the hydraulic jacks are fixed on the distribution beam, one ends of the finish rolling deformed steel bars are connected with the hydraulic jacks, the other ends of the finish rolling deformed steel bars are fixedly connected with the inner support 7 of the cofferdam, and the hydraulic jacks lower the inner support 7 of the cofferdam to a set elevation through lowering the finish rolling deformed steel bars.
And 6, referring to fig. 12 and 13, after the inner cofferdam support 7 is lowered to a set elevation, the inner cofferdam support 7 is welded with the platform piles 2 beside the inner cofferdam support 7 into a whole through the connecting plates and the stiffening plates, then the distribution beam lowering system 8 is dismantled, and a plurality of fore-and-aft-connected steel plate piles 9 are inserted and driven around the inner cofferdam support 7 to complete the construction of the steel plate pile cofferdam.
And 7, as shown in fig. 14 and 15, after the construction of both the bored pile and the steel sheet pile cofferdam is completed, removing the drilling machine, removing the first prefabricated drilling platform 5a, the second prefabricated drilling platform 5b, the third prefabricated drilling platform 5c, the pile hanging bracket 4 and the supporting pile 1, and pouring bottom sealing concrete 14 at the bottom of the steel sheet pile cofferdam.
Principle of operation
The embodiment of the application provides a device for quickly constructing a bridge substructure in a semi-shore semi-water narrow water area, and the construction device is provided with a plurality of steel casing cylinders 3, the steel casing cylinders 3 are inserted and beaten at set positions of a bridge foundation and are arranged in a matrix manner, and pile hanging brackets 4 are fixedly arranged on the outer wall of each steel casing cylinder 3; drilling platform 5, this drilling platform 5 are the horizontal direction and fix on hanging a pile bracket 4 and lie in the top of a steel casing 3, are equipped with the through-hole that penetrates a steel casing 3 on drilling platform 5.
Therefore, the construction equipment of this application all fixes being equipped with in the outer wall of steel protects a 3 and hangs stake bracket 4, hangs and prefabricates holistic drilling platform 5 in advance on stake bracket 4 and supplies the drilling to use, and steel protects a 3 basis as drilling platform 5. And a drilling platform formed by additionally inserting and driving steel pipe piles, installing distribution beams, bridge decks and other structures is not needed, so that the construction cost and the construction period are greatly saved. The drilling platform 5 can be assembled in a partition and block mode, so that the purpose of drilling as soon as possible can be achieved, and a large floating crane which cannot stand in a narrow water area can be used for hoisting in a partition and block mode by using a small floating crane. According to the construction method, the inner support 7 of the cofferdam is hoisted and lowered while the bored pile is constructed, the steel sheet pile cofferdam is constructed, and the construction period is greatly shortened.
In the description of the present application, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience in describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present application. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "coupled" are to be construed broadly and encompass, for example, both fixed and removable coupling as well as integral coupling; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
It is noted that, in this application, relational terms such as "first" and "second," and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The previous description is only an example of the present application, and is provided to enable any person skilled in the art to understand or implement the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. Device at half bank narrow and small waters quick construction bridge substructure of half water, its characterized in that includes:
the pile hanging bracket comprises a plurality of steel protecting cylinders (3), wherein the steel protecting cylinders (3) are provided with a plurality of steel protecting cylinders (3), the plurality of steel protecting cylinders (3) are inserted and driven at a set position of a bridge foundation, and pile hanging brackets (4) are fixedly arranged on the outer wall of each steel protecting cylinder (3);
the drilling platform (5) is fixed on the pile hanging bracket (4) in the horizontal direction and is positioned at the top end of the steel casing (3), and a through hole penetrating into the steel casing (3) is formed in the drilling platform (5);
still including inserting and beating many platform stake (2) that are used for supporting drilling platform (5) around drilling platform (5), many the top of platform stake (2) and the edge fixed connection of drilling platform (5).
2. The apparatus for rapid construction of a bridge substructure in semi-shore semi-aqueous confined waters of claim 1, wherein:
a plurality of supporting piles (1) are inserted and driven around the drilling platform (5), the distance between each supporting pile (1) and the drilling platform (5) is greater than the distance between each platform pile (2) and the drilling platform (5), and a connecting system (6) is arranged between each two adjacent supporting piles (1) and each platform pile (2);
an inner cofferdam support (7) for supporting a steel sheet pile cofferdam is arranged on a connecting system (6) between the supporting pile (1) and the platform pile (2), and a latticed steel pile casing positioning guide frame (11) is fixedly arranged at the top of the inner cofferdam support (7).
3. The apparatus for rapidly constructing a bridge substructure in semi-shore semi-aqueous narrow waters according to claim 2, wherein:
the supporting piles (1) and the platform piles (2) are provided with distribution beam lowering systems (8) for synchronously lowering the cofferdam inner supports (7) to a set elevation, the distribution beam lowering systems (8) are provided with four groups, and the four groups of distribution beam lowering systems (8) are symmetrically arranged along the center line of the cofferdam inner supports (7).
4. The apparatus for rapidly constructing a substructure of a bridge in a semi-coastal semi-aqueous narrow water area of claim 2, wherein:
a plurality of fore shaft steel sheet piles (9) are inserted and punched around the inner support (7) of the cofferdam, the fore shaft steel sheet piles (9) are connected end to form a water-blocking steel sheet pile cofferdam, and the inner wall of the fore shaft steel sheet pile (9) is attached to the inner support (7) of the cofferdam.
5. The apparatus for rapidly constructing a bridge substructure in semi-shore semi-aqueous narrow waters according to claim 2, wherein:
the cofferdam inner support (7) is of a rectangular frame structure, the cofferdam inner support (7) comprises a left half cofferdam inner support (7a) and a right half cofferdam inner support (7b), the left half cofferdam inner support (7a) and the right half cofferdam inner support (7b) are both of Contraband-shaped structures, and the left half cofferdam inner support (7a) and the right half cofferdam inner support (7b) are welded and connected to form the cofferdam inner support (7).
6. The apparatus for rapid construction of a bridge substructure in semi-shore semi-aqueous confined waters of claim 1, wherein:
the drilling platform (5) at least comprises two prefabricated drilling platforms, and the drilling platform (5) is formed by splicing the adjacent two prefabricated drilling platforms end to end.
7. The apparatus for rapid construction of a bridge substructure in semi-shore semi-aqueous confined waters of claim 1, wherein:
and a drilling machine for drilling in the steel casing (3) is arranged on the drilling platform (5).
8. The apparatus for rapid construction of a bridge substructure in semi-shore semi-aqueous confined waters of claim 1, wherein:
the side of drilling platform (5) is equipped with trestle (10) and inserts mast hoist (13) or floating crane (12) of beating steel casing (3), mast hoist (13) are located the bank side, floating crane (12) are located the waters side.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202122767135.9U CN217053422U (en) | 2021-11-10 | 2021-11-10 | Device for quickly constructing bridge substructure in semi-shore semi-water narrow water area |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113931207A (en) * | 2021-11-10 | 2022-01-14 | 中铁大桥局第七工程有限公司 | Device and method for quickly constructing bridge substructure in half-shore semi-water narrow water area |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113931207A (en) * | 2021-11-10 | 2022-01-14 | 中铁大桥局第七工程有限公司 | Device and method for quickly constructing bridge substructure in half-shore semi-water narrow water area |
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