CN111501548B - Anchor block structure and construction method thereof - Google Patents
Anchor block structure and construction method thereof Download PDFInfo
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- CN111501548B CN111501548B CN202010324561.2A CN202010324561A CN111501548B CN 111501548 B CN111501548 B CN 111501548B CN 202010324561 A CN202010324561 A CN 202010324561A CN 111501548 B CN111501548 B CN 111501548B
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/14—Towers; Anchors ; Connection of cables to bridge parts; Saddle supports
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/02—Piers; Abutments ; Protecting same against drifting ice
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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Abstract
The invention relates to the technical field of building construction, in particular to an anchor block structure and a construction method thereof. The anchor block structure comprises a left anchor block and a right anchor block, and a post-cast section is arranged between the left anchor block and the right anchor block; an empty bin is arranged inside the left anchor block, and a counterweight top plate is arranged above the empty bin; the right anchor block is of a solid structure, and the upper surface of the counterweight top plate and the upper surface of the right anchor block are both used for forming an abutment foundation of the approach bridge. According to the anchor block structure and the construction method thereof, the left anchor block and the right anchor block are arranged, the empty bin is arranged in the left anchor block, the right anchor block is of a solid structure, and meanwhile, the balance weight top plate is arranged above the empty bin, so that the transverse balance weight of the anchor body can be balanced, the square amount of concrete is reduced on the premise that the self gravity of the anchor block structure can bear and balance the huge tensile force of a cable rope, the bearing capacity above the empty bin can be enhanced, and the upper surfaces of the balance weight top plate and the right anchor block can be used as a bridge abutment foundation of an approach bridge.
Description
Technical Field
The invention relates to the technical field of building construction, in particular to an anchor block structure and a construction method thereof.
Background
The suspension bridge mainly comprises four major parts, namely a main beam, a tower pier, a cable and an anchor, wherein the anchor is a main bearing structure of the suspension bridge and is also a key part of a main cable anchored by the suspension bridge, and the main function of the anchor is to transmit the tension of the main cable to a foundation. The gravity anchor balances the horizontal component of the tension of the main cable by using friction force, so that the gravity anchor is huge in size, an anchor block in the gravity anchor belongs to large-volume concrete construction, the concrete volume is large, and the conventional anchor block structure cannot be used as a bridge abutment foundation of an approach bridge if the concrete volume is reduced during construction.
Disclosure of Invention
The invention aims to provide an anchor block structure and a construction method thereof, which aim to solve the technical problem that the anchor block structure cannot be used as an abutment foundation of an approach bridge under the condition of reducing the concrete volume in the prior art.
Based on the aim, the invention provides an anchor block structure, which comprises a left anchor block and a right anchor block, wherein a post-cast section is arranged between the left anchor block and the right anchor block; an empty bin is arranged inside the left anchor block, and a counterweight top plate is arranged above the empty bin; right side anchor block is solid construction, the upper surface of balanced heavy roof with the upper surface of right side anchor block all is used for forming the abutment basis of approach bridge.
Further, in some optional embodiments, a first chamfer slope is arranged between a wall surface of the side wall of the left anchor block, which is far away from the right anchor block, and the rear end surface of the left anchor block; and a second chamfer inclined plane is arranged between the wall surface of the side wall of the right anchor block far away from the left anchor block and the rear end surface of the right anchor block.
Further, in certain alternative embodiments, the width of the front end of the left anchor block is less than the width of the rear end of the left anchor block, and the width of the front end of the right anchor block is less than the width of the rear end of the right anchor block.
Further, in certain alternative embodiments, the number of empty bins is four.
Based on the above purpose, the invention also provides a construction method of the anchor block structure, which comprises the following steps:
the left anchor block and the right anchor block are constructed in a layered and partitioned mode;
constructing a template system of the left anchor block and the right anchor block;
pouring concrete for the left anchor block and the right anchor block;
constructing a counterweight top plate above the empty bin;
and (5) post-pouring section construction.
Optionally, in some embodiments, before the layering and partitioning construction of the left anchor block and the right anchor block, a step of excavation of a foundation pit and a step of construction of a cushion layer are further included, and after excavation of the foundation pit is completed, a concrete cushion layer is poured immediately to protect a bearing surface foundation at the bottom of the foundation pit.
Optionally, in some embodiments, in the step of layering and blocking construction of the left anchor block and the right anchor block, the left anchor block and the right anchor block are respectively set to have layers, and layering construction is performed simultaneously, wherein a post-cast section construction area is left between the left anchor block and the right anchor block.
Optionally, in certain embodiments, the empty bin is located at a set level of the left anchor block.
Optionally, in some embodiments, in the step of constructing the formwork system of the left anchor block and the right anchor block, the portions of the left anchor block and the right anchor block below a set elevation are constructed by using an earth mould, and the size of excavation of the foundation pit is the size of the portions of the left anchor block and the right anchor block below the set elevation; and the parts of the left anchor block and the right anchor block above the set elevation are constructed by adopting cantilever formworks.
Optionally, in some embodiments, the step of constructing the formwork system of the left anchor block and the right anchor block includes the step of constructing the empty bin by using a full hall disc buckle type steel pipe bracket.
Compared with the prior art, the invention has the beneficial effects that:
according to the anchor block structure and the construction method thereof, the left anchor block and the right anchor block are arranged, the empty bin is arranged inside the left anchor block, the right anchor block is of a solid structure, and meanwhile, the balance weight top plate is arranged above the empty bin, so that the transverse balance weight of the anchor body can be balanced, the square amount of concrete is reduced on the premise that the self gravity of the anchor block structure can bear and balance the huge tensile force of a cable rope, the bearing capacity above the empty bin can be enhanced, and the upper surface of the balance weight top plate and the upper surface of the right anchor block can be used as a bridge abutment foundation of a bridge approach.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic structural diagram of a left anchor block according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a right anchor block according to a first embodiment of the present invention;
FIG. 3 is a schematic top view of an anchor block structure according to an embodiment of the present invention;
FIG. 4 is a process flow diagram of a construction method of an anchor block structure according to a second embodiment of the present invention;
fig. 5 is a schematic vertical cross-sectional view of a full-scale disc-buckled steel pipe bracket in the construction method of the anchor block structure according to the second embodiment of the present invention.
Icon: 101-left anchor block; 102-right anchor block; 103-empty bin; 104-counterweight top plate; 105-a first chamfer bevel; 106-a second chamfer bevel; 107-post-pouring section; 108-full hall disc buckle type steel pipe bracket.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all, embodiments of the present invention. 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 invention.
In the description of the present invention, it should be noted that the orientations or positional relationships indicated as the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., appear based on the orientations or positional relationships shown in the drawings only for the convenience of describing the present invention and simplifying the description, but not for indicating or implying that the referred devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" as appearing herein are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" should be interpreted broadly, e.g., as being fixed or detachable or integrally connected; 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 meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example one
Referring to fig. 1 to 3, the present embodiment provides an anchor block structure, including a left anchor block 101 and a right anchor block 102, where a post-cast section 107 is disposed between the left anchor block 101 and the right anchor block 102; an empty bin 103 is arranged inside the left anchor block 101, and a counterweight top plate 104 is arranged above the empty bin 103; right anchor block 102 is a solid structure, and the upper surface of counterweight top plate 104 and the upper surface of right anchor block 102 are both used to form the abutment base of the approach bridge.
The anchor block structure that this embodiment provided, through setting up left side anchor block 101 and right side anchor block 102, and set up empty storehouse 103 in the inside of left side anchor block 101, and right side anchor block 102 is solid construction, simultaneously, the top at empty storehouse 103 has set up balanced heavy roof 104, can enough balance the horizontal counter weight of anchor body, under the prerequisite that the self gravity of guaranteeing the anchor block structure can bear and balance the huge pulling force of cable, reduce the concrete square volume, can strengthen the bearing capacity above empty storehouse 103 again, make the upper surface of balanced heavy roof 104 and the upper surface of right side anchor block 102 can regard as the abutment basis of approach bridge.
Further, in some embodiments, a first chamfer slope 105 is provided between a wall surface of a side wall of left anchor block 101 away from right anchor block 102 and a rear end surface of left anchor block 101; second chamfer inclined plane 106 is arranged between the wall surface of the side wall of right anchor block 102 far away from left anchor block 101 and the rear end surface of right anchor block 102.
The first chamfer incline 105 and the second chamfer incline 106 are substantially symmetrically disposed on either side of a centerline of the post-cast section 107.
In this embodiment, first chamfer incline 105 and second chamfer incline 106 are substantially symmetrically disposed on opposite sides of a centerline of the anchor block.
Further, in some embodiments, the included angle α between the first chamfer slope 105 and the first side surface is a first set angle, and the included angle β between the second chamfer slope 106 and the second side surface is a second set angle.
In the present embodiment, the first set angle is 50.8 °, and the second set angle is 51.2 °.
The first setting angle and the second setting angle are not limited to the above values, and may be designed individually according to actual construction requirements.
Further, in some embodiments, the width of the front end of left anchor block 101 is less than the width of the rear end of left anchor block 101 and the width of the front end of right anchor block 102 is less than the width of the rear end of right anchor block 102.
Specifically, the side surface of the left anchor block 101 and the side surface of the right anchor block 102 are in the spatial direction above the set elevation, and the anchor block structure is of a structure which is small in the top and large in the bottom and narrow in the front and wide in the back, so that the whole anchorage has a light and concise visual effect.
Further, in certain embodiments, the number of empty bins 103 is four.
The sizes and the positions of the four empty bins 103 need to be designed independently according to actual construction requirements.
It should be noted that the number of the empty bins 103 is not limited to four, and other numbers may be selected according to actual construction requirements.
Example two
The embodiment provides a construction method of an anchor block structure, which is used for constructing the anchor block structure provided by the first embodiment of the invention and comprises the following steps:
layering and blocking construction of a left anchor block 101 and a right anchor block 102;
constructing a template system of a left anchor block 101 and a right anchor block 102;
pouring concrete for the left anchor block 101 and the right anchor block 102;
the construction of the counterweight top plate 104 is carried out above the empty bin 103;
and constructing a post-cast section 107.
Optionally, in some embodiments, before the layering and blocking construction of left anchor block 101 and right anchor block 102, a foundation pit excavation and cushion layer construction step is further included, and after the foundation pit excavation is completed, a concrete cushion layer is poured immediately to protect the bearing surface foundation at the bottom of the foundation pit.
Optionally, in some embodiments, in the step of layered and partitioned construction of left anchor block 101 and right anchor block 102, the number of layers of left anchor block 101 and right anchor block 102 is set, and layered construction is performed simultaneously, wherein a post-cast section 107 construction area is left between left anchor block 101 and right anchor block 102.
Alternatively, in certain embodiments, empty bin 103 is located at a set level of left anchor block 101.
Optionally, in some embodiments, in the step of constructing the formwork system of left anchor block 101 and right anchor block 102, the portions of left anchor block 101 and right anchor block 102 below the set elevation are constructed by using earth moulds, and the size of excavation of the foundation pit is the size of the portions of left anchor block 101 and right anchor block 102 below the set elevation; and the parts of the left anchor block 101 and the right anchor block 102 above the set elevation are constructed by adopting cantilever formworks.
Optionally, in some embodiments, the step of constructing the formwork system of left anchor block 101 and right anchor block 102 includes the step of constructing empty compartment 103 using full hall disc buckle type steel pipe support 108.
According to the anchor block structure construction method provided by the embodiment, the left anchor block 101 and the right anchor block 102 are arranged, the empty bin 103 is arranged inside the left anchor block 101, the right anchor block 102 is of a solid structure, and meanwhile, the counterweight top plate 104 is arranged above the empty bin 103, so that the concrete volume can be reduced on the premise that the self gravity of the anchor block structure can bear and balance the huge tensile force of a cable, the bearing capacity above the empty bin 103 can be enhanced, and the upper surface of the counterweight top plate 104 and the upper surface of the right anchor block 102 can be used as a bridge abutment foundation for bridge approach.
The technical solution of the present embodiment is further illustrated by the following specific examples:
the example relates to a Yangtze river bridge, wherein an anchor block substrate is placed in middle weathered mudstone and middle weathered sandstone, the length of the anchor block substrate along the bridge direction is 43.36m, the width of the anchor block substrate along the bridge direction is 57.13m, the height of the anchor block substrate is 41.88m, and the elevation of the anchor block substrate is +198.0 m. And the outer contour structures of the front toe, the rear toe and the downstream side surface of the anchor block are formed by utilizing foundation pit excavation slopes under the elevation +222 m. In order to reduce the excavation scale of the foundation pit, the rear toe position of the anchor block below the elevation +222m is provided with chamfer inclined planes at the two transverse sides. In order to enable the whole anchor to have a light and concise visual effect, the parts of the upstream side surface and the downstream side surface of the anchor block above the elevation +222m are in a space trend, and the anchor block is integrally of a structure with a small top and a large bottom, a narrow front and a wide back. The top surface of the anchor block is also used as a roadbed section of 30m and is also used as an abutment foundation of a front approach bridge and a rear approach bridge. Considering the balance anchor body transverse balance weight, the section 12m of the top surface of the upstream side anchor block is of an empty bin 103 structure, and a top plate with the thickness of 1m is arranged on the empty bin. A rear anchor chamber and a front and rear anchor chamber connecting channel are arranged in the anchor block, and a post-cast section 107 with the width of 2.2m is arranged between the left anchor block 101 and the right anchor block 102.
Referring to fig. 4, the construction method of the anchor block structure includes the following steps:
s1, foundation pit excavation and cushion layer construction.
And blasting excavation is forbidden in the reserved layer 50cm away from the foundation surface of the anchor block foundation pit so as to avoid influencing the strength of the foundation, and mechanical excavation is matched with manual finishing to ensure the strength and the flatness of the foundation surface. When the distance between the excavation surface and the foundation surface is 50cm, a plurality of test pits (to the foundation surface) are excavated locally and rapidly, the in-situ bearing capacity test and the friction coefficient test of the foundation are immediately carried out, and the final elevation of the foundation surface is determined after the test is finished. Meanwhile, the water-proof and drainage work of the base is noticed, the base is provided with a water collecting well, water is pumped out in time by using a water suction pump, and the base is covered by color strip cloth when necessary to prevent the base from being soaked by rainwater.
The flatness height difference of the foundation pit base of the anchor block is controlled between +5cm and-15 cm.
And the anchor block foundation pit must be inspected after being excavated in place.
And after the foundation pit is excavated, immediately pouring a concrete cushion to protect the bearing surface foundation at the bottom of the foundation pit.
And S2, carrying out layered and block construction on the left anchor block 101 and the right anchor block 102.
The anchor block structure is divided into two blocks by a post-cast section 107 for operation, the two blocks are layered according to 4m in the height direction, a left anchor block 101 and a right anchor block 102 are respectively layered by 11 layers, and layered construction is carried out simultaneously, wherein the post-cast section 107 construction area is reserved between the left anchor block 101 and the right anchor block 102.
The construction sequence is based on the principle of block division, the construction is carried out in layers, two working surfaces of the left anchor block 101 and the right anchor block 102 are in parallel and in line production, and the cantilever formwork construction is adopted. And cooling pipes are arranged on each layer of the left anchor block 101 and the right anchor block 102 for temperature control, and the temperature difference between the interior of the concrete and the surface, the temperature difference between the surface of the concrete and the periphery and the highest temperature of the concrete are controlled, so that the development of temperature cracks is prevented.
And S3, constructing a template system of the left anchor block 101 and the right anchor block 102.
In this embodiment, the elevation is set to be 222.0m, no template is arranged at the part of the left anchor block 101 and the right anchor block 102 below the elevation 222.0m, a soil template is adopted, and the excavation size of the anchor block foundation pit is the size of the left anchor block 101 and the right anchor block 102, so that the excavation size needs to be strictly controlled in the excavation process of the foundation pit.
The parts of the left anchor block 101 and the right anchor block 102 above the elevation 222.0m are constructed by adopting cantilever formworks, the height of the formworks is 4.65m, the pouring height is 4m, and the panel can be made of domestic plates or other plates with the thickness of 21 mm; the vertical back ridges adopt woodwork I-beams, and the average distance does not exceed 280 mm; the horizontal back edge adopts a double No. 14 channel steel back edge, and the longitudinal maximum distance is 1200 mm.
It should be noted that the cantilever template is a prior art, and the structure thereof will not be described in detail.
In step S3, as shown in fig. 5, the empty container 103 is constructed by using the full-hall button-type steel pipe bracket 108.
In this embodiment, empty bin 103 is located at the 8 th to 11 th layers of left anchor block 101.
In this embodiment, left anchor block 101 has four cavitys, adopts current full hall dish to detain formula steel pipe support 108 and carries out the construction of empty warehouse 103, and the support interval is 60 x 90cm to add on full hall dish knot formula steel pipe support 108 and establish fastener formula steel pipe and support, fastener formula steel pipe supports and full hall dish knot formula steel pipe support 108 supports the template system jointly.
And S4, carrying out concrete pouring construction on the left anchor block 101 and the right anchor block 102.
The left anchor block 101 and the right anchor block 102 are both made of C30 concrete, concrete pouring is carried out in a mode that a ground pump is matched with a distributing machine, concrete is integrally poured in a layered reciprocating mode, layered vibration is carried out, the layered thickness is 35cm according to pouring capacity, initial setting time of the concrete and relevant regulations, and the maximum layered thickness is not more than 50 cm. Local control adopts a pot bottom method with the four sides high and the middle bottom to ensure the quality of the concrete at the four sides and remove the laitance at the lower position in time.
In order to ensure the uniformity and the compactness of the concrete, the vibration is enhanced in the pouring process. According to the actual condition that a slope is naturally formed during concrete pumping, two vibrators are arranged in front of and behind each pouring belt, and the first vibrator is arranged at a concrete discharge port, so that the problem of compaction of upper concrete is mainly solved; because the bottom layer reinforcing steel bars are arranged at a dense interval, the second channel is arranged at the concrete toe so as to ensure the compactness of the concrete at the lower part. The concrete is vibrated by adopting a handheld high-frequency vibrating rod, the vibrating time of the concrete is strictly controlled, and the conditions of concrete segregation and bleeding caused by over-vibration are prevented. For the area with bleeding phenomenon on the concrete surface, leather cylinder is adopted for drawing out or sponge water-absorbing materials are used for water absorption treatment.
And S5, constructing a counterweight top plate 104 above the empty bin 103.
In this embodiment, a counterweight top plate 104 having a thickness of 1m is provided above the empty bin 103.
And S6, constructing a post-pouring section 107.
In this embodiment, the width of the post-cast section 107 is 2.2m, the post-cast section 107 adopts C30 to compensate the shrinkage concrete, after the shrinkage creep of the anchor block concrete which is cast first reaches the design requirement, the reinforcing steel bars of the post-cast section 107 are bound, the templates are installed, and then the concrete of the post-cast section 107 is cast and cured.
When the left anchor block 101 and the right anchor block 102 are poured, the side formwork of the post-pouring section 107 adopts a quick and easy closing net, and when the post-pouring section 107 is poured, the formwork adopts all wood formworks of the anchor block outer formwork. The panel can be a domestic panel with the thickness of 21 mm; the vertical back ridges can adopt woodwork H-beams with the section size of 80 multiplied by 200, and the average distance does not exceed 280 mm; the horizontal back arris can adopt two 14 channel-section steel back arriss, and the direction of height is 1200mm to the biggest interval, and the stupefied horizontal direction of single track back sets up three C20's inner pull rod, adopts the form of interior drawing outer stay to fix. The post-cast section 107 is cast twice, a template does not need to be erected below +222.0 elevation, the template is directly cast, the template is erected above +222.0 elevation for one-time casting forming, and a certain amount of angle steel or steel bars are pre-embedded when the bottom layer is cast for diagonal pulling reinforcement in the template on the upper layer.
For the construction of the post-cast section 107, two steel plate embedded parts are embedded at the positions which are 0.5m away from the edges of the two sides of the post-cast section 107, the two steel plate embedded parts are embedded on one side, the level is arranged according to the interval of 2m, a triangular bracket is installed on the embedded parts in the later period, a section steel platform is erected, and a scaffold is erected on the platform and is used as an operation platform for the construction of the post-cast section 107.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (9)
1. An anchor block structure is characterized by comprising a left anchor block and a right anchor block, wherein a post-cast section is arranged between the left anchor block and the right anchor block; an empty bin is arranged inside the left anchor block, and a counterweight top plate is arranged above the empty bin; the right anchor block is of a solid structure, and the upper surface of the counterweight top plate and the upper surface of the right anchor block are both used for forming an abutment foundation of an approach bridge;
the number of the empty bins is four.
2. The anchor block structure according to claim 1, wherein a first chamfer slope is provided between a wall surface of the side wall of the left anchor block, which is far from the right anchor block, and a rear end surface of the left anchor block; and a second chamfer inclined plane is arranged between the wall surface of the side wall of the right anchor block far away from the left anchor block and the rear end surface of the right anchor block.
3. The anchor block structure of claim 1, wherein the width of the front end of the left anchor block is less than the width of the rear end of the left anchor block, and the width of the front end of the right anchor block is less than the width of the rear end of the right anchor block.
4. A method of constructing an anchor block structure according to any one of claims 1 to 3, wherein the method comprises the steps of:
the left anchor block and the right anchor block are constructed in a layered and partitioned mode;
constructing a template system of the left anchor block and the right anchor block;
pouring concrete for the left anchor block and the right anchor block;
constructing a counterweight top plate above the empty bin;
and (5) post-pouring section construction.
5. The construction method according to claim 4, further comprising the steps of excavation of a foundation pit and construction of a cushion layer before the layering and partitioning construction of the left anchor block and the right anchor block, and pouring a concrete cushion layer immediately after excavation of the foundation pit is completed so as to protect a bearing surface foundation at the bottom of the foundation pit.
6. The construction method according to claim 4, wherein in the step of the layered and partitioned construction of the left anchor block and the right anchor block, the left anchor block and the right anchor block are respectively provided with a set number of layers and are simultaneously constructed in a layered manner, wherein a post-cast construction area is left between the left anchor block and the right anchor block.
7. The construction method according to claim 4, wherein the empty bin is located at a set level of the left anchor block.
8. The construction method according to claim 4, wherein in the step of constructing the formwork system of the left anchor block and the right anchor block, the left anchor block and the right anchor block are constructed by using earth moulds at the parts below a set elevation, and the size of excavation of the foundation pit is the size of the parts below the set elevation of the left anchor block and the right anchor block; and the parts of the left anchor block and the right anchor block above the set elevation are constructed by adopting cantilever formworks.
9. The construction method according to claim 4, wherein the step of constructing the formwork system of the left anchor block and the right anchor block comprises the step of constructing the empty bin by using a full-hall disc buckle type steel pipe bracket.
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| CN202010324561.2A CN111501548B (en) | 2020-04-22 | 2020-04-22 | Anchor block structure and construction method thereof |
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| CN111501548B true CN111501548B (en) | 2021-11-19 |
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| CN112627030A (en) * | 2020-11-18 | 2021-04-09 | 中交一公局集团有限公司 | Gravity type anchorage structure of cable saddle buttress foundation and approach bridge foundation and construction method |
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