CN213625657U - Prefabricated concrete segment of assembled open caisson - Google Patents

Abstract

The application provides a prefabricated concrete segment of an assembled open caisson, the assembled open caisson comprises a cutting edge and an open caisson wall, the open caisson wall comprises a plurality of staggered and laminated well wall layers, each well wall layer is composed of a plurality of prefabricated concrete segments, and the prefabricated concrete segments are provided with a plurality of connecting components for connecting with adjacent parts, wherein the adjacent parts represent the prefabricated concrete segments or the cutting edge adjacent to the prefabricated concrete segments; the connecting assemblies of the prefabricated concrete pipe pieces are connected with the connecting assemblies of the adjacent components to realize the connection of the prefabricated concrete pipe pieces and the adjacent components, wherein the prefabricated concrete pipe pieces which are positioned at the same level and are sequentially connected form a well wall layer with a closed peripheral side, and the prefabricated concrete pipe pieces which are positioned at the adjacent level and are adjacent are connected with the well wall layer of the adjacent level through the respective connecting assemblies. Because the prefabricated concrete pipe piece can form the main body of the open caisson wall, and can be prefabricated in advance, the quality of open caisson construction is favorably ensured, the period of open caisson construction is shortened, and the connection quality and the reliability are favorably ensured.

Description

Prefabricated concrete segment of assembled open caisson

Technical Field

The application relates to the technical field of building construction, in particular to a prefabricated concrete segment of an assembled open caisson.

Background

The open caisson technology is widely applied to various large building structures, such as structures on rivers: bridge pier foundation, retaining dam, etc.; a water taking structure: water intake pump rooms, sewage pump stations and the like; heavy structure foundation: chimneys, heavy equipment foundations, etc.; underground engineering: underground powerhouse, storage (oil, gas, water, coal) storehouse, underground driveway, underground station, mining shaft and the like; a deep foundation adjacent the building; underground working well: shield or pipe-jacking working wells, house deviation-rectifying working wells and the like.

The existing open caisson construction technology is generally to manufacture the wall of the open caisson on site, namely, binding reinforcing steel bars, erecting templates, reinforcing and pouring concrete on site, and after the concrete reaches a certain strength, removing the template, maintaining and sinking. The problems with such an approach are: the well wall is too long in manufacturing time, the construction speed of the open caisson is influenced, and the construction quality is difficult to guarantee due to the fact that all the modes of on-site manufacturing are adopted.

SUMMERY OF THE UTILITY MODEL

An object of the embodiment of this application is to provide a prefabricated concrete section of jurisdiction of assembled open caisson to when guaranteeing open caisson construction quality, promote the efficiency of open caisson construction by a wide margin.

In order to achieve the above object, embodiments of the present application are implemented as follows:

in a first aspect, an embodiment of the present application provides a prefabricated concrete segment of an assembled caisson, where the assembled caisson includes a blade and a caisson wall, the caisson wall includes multiple well wall layers that are stacked in a staggered manner, each well wall layer is composed of multiple prefabricated concrete segments, and multiple connecting assemblies for connecting to adjacent components are disposed on the prefabricated concrete segments, where the adjacent components represent the prefabricated concrete segments or the blade adjacent to the prefabricated concrete segments; prefabricated concrete section of jurisdiction coupling assembling with the coupling assembling of adjacent part is connected, realizes the connection of prefabricated concrete section of jurisdiction and adjacent part, wherein, be located same level and connect gradually a plurality of prefabricated concrete section of jurisdiction constitutes week side confined well wall layer, is located adjacent level and adjacent prefabricated concrete section of jurisdiction and realizes being connected with the well wall layer of adjacent level through respective coupling assembling.

In the embodiment of the application, the precast concrete segments are provided with a plurality of connecting components for connecting with adjacent components (namely, the precast concrete segments or the blade feet adjacent to the precast concrete segments), the connection between the precast concrete segments and the adjacent components can be realized through the connecting components, the plurality of precast concrete segments which are positioned at the same level and are sequentially connected can form a well wall layer with a closed peripheral side, the connection between the well wall layers can realize staggered lamination between the well wall layers, and the precast concrete segments can also be connected with the blade feet through the connecting components, so that the open caisson containing the blade feet is assembled. Because the prefabricated concrete pipe piece can constitute the main part of the open caisson wall of a well, and can prefabricate in advance, be favorable to guaranteeing the quality of open caisson construction, reduce the cycle of open caisson construction. And the connection between the precast concrete segment and the adjacent component is realized through the connecting component on the precast concrete segment, so that the operation is simple, the construction is convenient, and the connection quality and the reliability are favorably ensured.

With reference to the first aspect, in a first possible implementation manner of the first aspect, the edge of the precast concrete segment adjacent to the adjacent component is provided with a limiting assembly, and the limiting assembly of the precast concrete segment is matched with the limiting assembly of the adjacent component, so that the precast concrete segment is limited with the adjacent component.

In this implementation, through laying spacing subassembly at the adjacent border of precast concrete section of jurisdiction and adjacent part, can cooperate the spacing subassembly on the adjacent part, realize spacing each other between precast concrete section of jurisdiction and the adjacent part to guarantee that the open caisson that forms based on the construction of precast concrete section of jurisdiction has reliable quality. In addition, the assembly process of the wall of the open caisson can be safer and more convenient.

With reference to the first possible implementation manner of the first aspect, in a second possible implementation manner of the first aspect, the limiting component of the precast concrete segment is one of a groove and a protrusion, and the limiting component on the adjacent component, which is used for being matched with the limiting component of the precast concrete segment, is the other of the groove and the protrusion.

In the implementation mode, the groove and the protrusion are used as the mutually matched limiting assemblies, so that on one hand, the structure is simple, and the prefabricated concrete segment can be conveniently manufactured; on the other hand, the limiting assembly is simple and easy to operate in the assembling process of the wall of the open caisson.

With reference to the first aspect, in a third possible implementation manner of the first aspect, the connecting assembly of the precast concrete segment is one of a nut and a bolt, and the connecting assembly on the adjacent component for connecting with the connecting assembly of the precast concrete segment is the other one of a nut and a bolt.

In this implementation, through as the coupling assembling of mutually supporting with nut and bolt, simple structure connects firmly, the reliability is high, and easy operation, and is with low costs.

With reference to the first aspect, in a fourth possible implementation manner of the first aspect, the cross section of the caisson wall is circular, the precast concrete segment has a radian, and the diameter of the circle corresponding to the radian is 5-7 meters.

With reference to the first aspect, in a fifth possible implementation manner of the first aspect, the height of the precast concrete segment is 0.5 to 2 meters.

With reference to the first aspect, in a sixth possible implementation manner of the first aspect, the precast concrete segment is a concrete structure containing steel bars.

In order to make the aforementioned objects, features and advantages of the present application more comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments of the present application will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and that those skilled in the art can also obtain other related drawings based on the drawings without inventive efforts.

Fig. 1 is a schematic view of an open caisson.

Fig. 2 is a schematic structural diagram of a precast concrete segment according to an embodiment of the present application.

Fig. 3 is a schematic view of a caisson wall assembled by prefabricated concrete segments according to an embodiment of the present application.

Fig. 4 is a flowchart of an assembled open caisson construction method according to an embodiment of the present disclosure.

Fig. 5 is a schematic view of an excavated foundation pit according to an embodiment of the present application.

Fig. 6 is a schematic view of a foundation pit in which a cushion layer is poured according to an embodiment of the present application.

Fig. 7 is a schematic view of a mounted or cast blade foot according to an embodiment of the present disclosure.

Fig. 8 is a schematic diagram of controlling the sinking of the blade foot according to the embodiment of the present application.

FIG. 9 is a schematic diagram of a staggered installation of multiple well wall layers on the top surface of the cutting edge.

Icon: 100-open caisson; 110-blade foot; 120-open caisson wall; 200-prefabricating a concrete segment; 210-a connection assembly; 220-a stop assembly.

Detailed Description

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.

In the description of the present application, it should be noted that the terms "inside", "outside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the application usually place when using, and are only used for convenience in describing the present application and simplifying the description, but do not indicate or imply that the devices or elements that are referred to must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

It should also be noted that, unless expressly stated or limited otherwise, the terms "disposed" and "connected" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally 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 in a specific case by those of ordinary skill in the art.

For convenience of description, the caisson 100 is illustrated as a cylindrical caisson 100 in the present embodiment, but in practical cases, the caisson 100 may have various structures, for example, a rectangular tubular caisson 100, a triangular tubular caisson 100, a hexagonal, octagonal, and other tubular caisson 100, which are viewed from the top, and should not be construed as limiting the present application.

Referring to fig. 1, fig. 1 is a schematic view of an open caisson 100. The caisson 100 may include a blade leg 110 and a caisson wall 120, where the left side of fig. 1 is a top view of the caisson 100 and the right side of fig. 1 is a cross-sectional view of the caisson 100. The caisson wall 120 is arranged above the blade leg 110 and is connected with the blade leg 110.

In consideration of the problems of long construction period, difficulty in ensuring construction quality, and the like of the conventional open caisson 100, the inventors of the present application provide the following solutions to solve these problems.

Referring to fig. 2, fig. 2 is a schematic structural diagram of a precast concrete segment 200 according to an embodiment of the present application. In this embodiment, a plurality of connecting assemblies 210 may be disposed on the body of the precast concrete segment 200, each connecting assembly 210 is used for connecting with an adjacent component, where the adjacent component represents the precast concrete segment 200 or the blade 110 adjacent to the precast concrete segment 200, that is, if the precast concrete segment 200 is disposed on the blade 110, the precast concrete segment 200 may be connected with the blade 110 through the connecting assembly 210, and the connection between the precast concrete segment 200 and the precast concrete segment 200 may also be connected through the corresponding connecting assembly 210.

The connecting components 210 of the precast concrete segment 200 are connected with the connecting components 210 of the adjacent components, so that the connection between the precast concrete segment 200 and the adjacent components can be realized, wherein the plurality of precast concrete segments 200 located at the same level and connected in sequence can form a well wall layer with a closed peripheral side, and the precast concrete segments 200 located at the adjacent level (i.e. the upper and lower level) and adjacent to each other can be connected with the well wall layer of the adjacent level through the respective connecting components 210. Thus, the open caisson 100 can be assembled by connecting the precast concrete segment 200 with the adjacent parts. The open caisson wall 120 assembled by the prefabricated concrete segments 200 is shown in fig. 3.

The connection between the precast concrete segment 200 and the adjacent parts can be realized through the connection assembly 210 of the precast concrete segment 200, the plurality of precast concrete segments 200 located at the same level and connected in sequence can form a well wall layer with a closed peripheral side, the connection between the adjacent precast concrete segments 200 located at the adjacent level and connected can realize staggered lamination between the well wall layers, and the precast concrete segments 200 can also be connected with the blade legs 110 through the connection assembly 210, so that the caisson 100 containing the blade legs 110 is assembled. Because the precast concrete segment 200 can form the main body of the caisson wall 120 and can be precast in advance, the construction quality of the caisson 100 (namely the quality of the caisson wall 120) can be ensured, and the construction period of the caisson 100 is shortened. And the connection between the precast concrete segment 200 and the adjacent components is realized through the connecting assembly 210 on the precast concrete segment 200, so that the operation is simple, the construction is convenient, and the connection quality and the reliability are favorably ensured.

For example, the adjacent edge of the precast concrete segment 200 and the adjacent component may be provided with a limiting component 220, and the limiting component 220 of the precast concrete segment 200 and the limiting component 220 of the adjacent component may be matched with each other, so as to realize the mutual limiting between the precast concrete segment 200 and the adjacent component.

For example, the spacing between the precast concrete segment 200 and the left (or right) precast concrete segment 200 can be achieved by the spacing assembly 220 that is engaged with each other between the precast concrete segment 200 and the left (or right) precast concrete segment 200. For another example, the spacing between the precast concrete segment 200 and the precast concrete segment 200 (or the blade 110) can be achieved by the spacing assembly 220 engaged with each other between the precast concrete segment 200 and the precast concrete segment 200 (or the blade 110).

The limit assemblies 220 are arranged on the edges of the precast concrete segment 200 adjacent to the adjacent parts, and can be matched with the limit assemblies 220 on the adjacent parts, so that the precast concrete segment 200 and the adjacent parts are limited mutually, and the open caisson 100 constructed on the basis of the precast concrete segment 200 is guaranteed to have reliable quality. And, in the assembling process of the caisson wall 120, it is also safer and more convenient.

Illustratively, the limiting component 220 of the precast concrete segment 200 is one of a groove and a protrusion, and the limiting component 220 on the adjacent part for matching with the limiting component 220 of the precast concrete segment 200 is the other of a groove and a protrusion.

For example, the limiting component 220 located on the precast concrete segment 200 near the left side is a groove, the limiting component 220 located on the precast concrete segment 200 near the right side is a protrusion, and the size and the shape of the groove on the left side and the protrusion on the right side on the precast concrete segment 200 can be matched with each other, so that the universality of the precast concrete segment 200 can be ensured. Thus, when being installed, the prefabricated concrete segment 200 and the adjacent prefabricated concrete segment 200 can be mutually limited through the mutually matched groove and protrusion. Similarly, if the spacing component 220 is also arranged between the upper side and the lower side of the precast concrete segment 200, the design of the spacing component 220 on the left side and the right side of the precast concrete segment 200 can be referred to, and the details are omitted here. Of course, there may be no limiting assembly 220 between the upper side and the lower side of precast concrete segment 200, and this is not a limitation.

The groove and the protrusion are used as the mutually matched limiting assemblies 220, so that on one hand, the structure is simple, and the prefabricated concrete segment 200 can be conveniently manufactured; on the other hand, the limiting assembly 220 is simple and easy to operate in the assembling process of the caisson wall 120.

In this embodiment, the connecting members 210 of the precast concrete segment 200 may be one of nuts or bolts, and the connecting members 210 of the adjacent members for connecting with the connecting members 210 of the precast concrete segment 200 are the other of nuts or bolts. Through regard as the coupling assembling 210 of mutually supporting with nut and bolt, simple structure connects firmly, the reliability is high, and easy operation, and is with low costs.

Of course, other configurations may be used as the coupling assembly 210, such as a snap-fit configuration. For example, two adjacent precast concrete segments 200, one precast concrete segment 200 has a first latch on its lower side, and the other precast concrete segment 200 has a second latch on its upper side, and the first latch and the second latch can be engaged with each other, and the engagement manner is not limited to corresponding engagement (i.e. each tooth of the first latch is combined with each pit of the second latch), but also can be engaged with each other in a staggered manner (i.e. a part of the latches of the first latch are engaged with a part of the pits of the second latch, and the rest of the latches of the first latch are engaged with a part of the pits of the second latch on the other precast concrete segment 200). In addition, in order to improve the versatility of the precast concrete segment 200, a second latch and a first latch which are matched with each other may be respectively configured on the upper side and the lower side of the same precast concrete segment 200.

In this embodiment, taking the cross section of the caisson wall 120 as a circle as an example, correspondingly, the precast concrete segment 200 has a radian, and the diameter of the circle corresponding to the radian is the diameter of the caisson wall 120, which is usually 5 to 7 meters, but should not be considered as the limitation of the present application.

In addition, for the open caisson wall 120 with different cross section shapes, the prefabricated concrete segments 200 with corresponding shapes can be designed, for example, for the square open caisson wall 120, the prefabricated concrete segments 200 can be designed to be of reverse 'L' shape in cross section, the lengths of the two sides can be the same or different, and a well wall layer can be assembled by 4 prefabricated concrete segments 200. The rest of the structures can refer to the structure of the precast concrete segment 200, and the description is omitted here.

For example, in order to facilitate construction and transportation of the precast concrete segment 200, the height of the precast concrete segment 200 may be designed to be 0.5-2 m, which is subject to actual requirements and is not limited herein.

In this embodiment, the precast concrete segment 200 may be a concrete structure containing steel bars, so as to ensure the quality (for example, firmness, hardness, etc.) of the precast concrete segment 200, thereby further ensuring the quality of the caisson wall 120.

In the above, the prefabricated concrete segment 200 of the assembled caisson 100 provided in the embodiment of the present application is introduced, and in order to facilitate understanding of the prefabricated concrete segment 200 and the specific manner of constructing the caisson 100 based on the prefabricated concrete segment 200, the construction method of the assembled caisson 100 provided in the embodiment of the present application will be described below.

Referring to fig. 4, fig. 4 is a flowchart illustrating an assembled open caisson construction method according to an embodiment of the present disclosure. In the present embodiment, the assembly type open caisson construction method may include step S10, step S20, step S30, step S40, step S50, and step S60.

In this embodiment, in order to better consider the influence of the construction environment on the open caisson construction, before step S10 is executed, soil property construction parameters of the construction site may be obtained, and a foundation pit (for example, a foundation pit two meters deep) may be excavated at the construction site, where a schematic diagram of the excavated foundation pit is shown in fig. 5.

Further, based on the soil property construction parameters, the applicable type of the blade foot can be determined, so that a cushion layer corresponding to the type of the blade foot is installed or poured at the position of the cushion layer, and the blade foot of the type of the blade foot is installed or poured on the cushion layer.

The method comprises the steps of digging a foundation pit at a construction point position by obtaining soil construction parameters of the construction point position, and determining the type of the applicable blade foot by combining the soil construction parameters so as to manufacture an applicable cushion layer and an applicable blade foot. Therefore, the soil construction parameters can be reasonably considered, and the open caisson construction quality is ensured.

For example, after determining the applicable blade foot model, step S10 may be executed.

Step S10: and determining a cushion layer position for installing the blade foot from the excavated foundation pit, and installing or pouring a cushion layer at the cushion layer position.

In this embodiment, the position of the cushion layer can be determined in the foundation pit, so that the cushion layer can be installed or poured at the position of the cushion layer. Because the preparation of bed course is not loaded down with trivial details, also need not to consume too much time, consequently, can adopt the mode of cast in situ bed course (do not do the restriction, also can adopt the bed course of making in advance), pour the bed course in the bed course position. For example, the cushion layer may be a cement mortar cushion layer, but is not limited thereto. The schematic diagram of casting the cushion layer in the foundation pit is shown in fig. 6.

After the cushion layer is cast, step S20 may be performed.

Step S20: and installing or pouring a cutting edge on the cushion layer, and determining the prefabricated concrete segment matched with the cutting edge.

In this embodiment, the edge corresponding to the type of the edge can be installed or poured on the cushion layer. For example, the blade foot can be cast in place in a mode with higher flexibility, and the blade foot casting method can also be more suitable for construction factors such as construction environment, soil quality parameters and the like, and is not dependent on earlier construction environment investigation. Certainly, the edge can be prefabricated in advance, so that the construction time can be saved, and the quality of the edge can be ensured. The two modes are respectively long and can be selected according to actual needs, and the method is not limited in the process. A schematic view of the installed or cast blade foot is shown in fig. 7.

After the installation or casting of the blade foot is completed (i.e., after the construction of the blade foot is completed and the blade foot is available), step S30 may be performed.

Step S30: and controlling the blade foot to sink, and after the blade foot sinks for a preset distance range, mounting a plurality of precast concrete segments on the top surface of the blade foot through the connecting components on the precast concrete segments to form a well wall layer with a peripheral side closed on the top surface of the blade foot, wherein each precast concrete segment is provided with the connecting component for connecting with an adjacent part, and the adjacent part represents the precast concrete segment or the blade foot adjacent to the precast concrete segment.

In this embodiment, the blade foot sinking can be controlled. Specifically, the cutting edge can be gradually sunk by digging soil below the cutting edge. The schematic drawing of the blade foot sinking is shown in figure 8.

After the cutting edge is sunk for a preset distance range (for example, 0.5-2 m, the preset distance range can refer to the height of the prefabricated concrete pipe piece, but is not limited to the height), the connection between the concrete pipe piece and the cutting edge can be carried out, and one or more well wall layers are assembled.

Illustratively, a plurality of precast concrete segments can be mounted on the top surfaces of the cutting edges through connecting components on the precast concrete segments (for connecting with adjacent components, the adjacent components represent the precast concrete segments or the cutting edges adjacent to the precast concrete segments), so as to form a circumferentially closed well wall layer on the top surfaces of the cutting edges.

In this embodiment, the top surface of the blade foot has a plurality of connection locations, each connection location being provided with a connection assembly. Then, the concrete way of installing the precast concrete segment on the top surface of the blade foot through the connection assembly may be:

determining a plurality of adjacent target connecting parts from the connecting parts on the top surface of the blade foot, wherein the number of the target connecting parts is the same as that of the connecting parts on the bottom surface of the precast concrete segment to be installed; and (3) enabling the parts to be connected to be installed on the bottom surface of the precast concrete segment to be installed (the connecting parts on the bottom surface of the precast concrete segment to be installed) to correspond to the target connecting parts one by one, and connecting the connecting components of the parts to be connected to be installed with the connecting components of the target connecting parts one by one so as to install the precast concrete segment on the top surfaces of the blade feet.

The connecting components of the target connecting parts and the connecting components of the adjacent prefabricated concrete segments can be connected by determining a plurality of adjacent target connecting parts (the number of the target connecting parts is the same as that of the connecting parts on the bottom surface of the prefabricated concrete segment to be installed) from the connecting parts on the top surface of the blade foot, the connecting parts to be installed on the bottom surface of the prefabricated concrete segment to be installed are in one-to-one correspondence with the target connecting parts, so that the prefabricated concrete segments are installed on the top surface of the blade foot, the prefabricated concrete segments of the same level can depend on the respective connecting components to realize the interconnection of the adjacent prefabricated concrete segments, a stable and reliable-quality well wall layer is formed, the construction quality of open caisson construction is ensured, and the difficulty of open caisson construction.

After a layer of well wall layer is arranged on the top surface of the blade foot, the blade foot can be continuously controlled to sink (the well wall layer is also driven to sink). After sinking a distance or installing a predetermined number of well wall layers by assembling prefabricated concrete segments, step S40 may be performed.

Step S40: and detecting whether the total sinking distance of the blade foot reaches the target distance.

For example, the depth of the blade foot sinking may be detected by the depth detection device to determine whether the total distance of the blade foot sinking reaches the target distance.

When the total distance by which the blade leg is sunk does not reach the target distance, step S50 may be performed.

Step S50: and continuously controlling the blade foot to sink, namely alternately mounting a plurality of prefabricated concrete pipe pieces on the top surface of the prefabricated concrete pipe piece of the top well wall layer every time the blade foot sinks within a preset distance range so as to form a new top well wall layer which is alternately stacked with the top well wall layer.

Illustratively, the excavation can be continuously carried out below the blade foot to control the blade foot to sink, and when the blade foot sinks for a preset distance range (0.5-2 m), a plurality of prefabricated concrete pipe pieces can be installed on the top surface of the prefabricated concrete pipe piece of the top well wall layer in a staggered mode, so that a new top well wall layer which is stacked with the top well wall layer in a staggered mode is formed.

In this embodiment, have a plurality of positions of connecting on the top surface of precast concrete section of jurisdiction, every connecting portion is equipped with coupling assembling, and at this moment, the mode of a plurality of precast concrete sections of jurisdiction of crisscross installation on the top surface of the precast concrete section of jurisdiction of top layer wall of a well layer can be:

and determining a plurality of adjacent target connecting parts from the connecting parts on the top surface of the current top well wall layer, wherein the plurality of target connecting parts are from two adjacent prefabricated concrete segments forming the current top well wall layer, and the number of the target connecting parts is the same as that of the connecting parts on the bottom surface of the prefabricated concrete segment to be installed. And then, corresponding the positions to be installed and connected on the bottom surface of the prefabricated concrete segment to be installed to the target connecting positions one by one, and connecting the connecting components of the positions to be installed and connected one by one with the connecting components of the target connecting positions so as to install the prefabricated concrete segment on the top surface of the current top layer well wall layer, wherein the positions to be installed and connected represent the connecting positions on the bottom surface of the prefabricated concrete segment to be installed, and each connecting position on the bottom surface of the prefabricated concrete segment is provided with a connecting component. A schematic diagram of the staggered installation of multiple well wall layers on the top surface of the blade foot is shown in fig. 9.

The method comprises the steps of determining a plurality of adjacent target connecting parts (from two adjacent prefabricated concrete pipe pieces forming the current top well wall layer) from the connecting parts on the top surface of the current top well wall layer, wherein the number of the target connecting parts is the same as that of the connecting parts on the bottom surface of the prefabricated concrete pipe piece to be installed. And then, corresponding the parts to be installed and connected on the bottom surface of the precast concrete segment to be installed to the target connection parts one by one, and connecting the connecting components of the parts to be installed and connected to the connecting components of the target connection parts one by one, so that the precast concrete segment is installed on the top surface of the current top well wall layer in a staggered and laminated manner. The quality of the wall of the open caisson can be ensured by the staggered and laminated mode, so that the reliability of open caisson construction is ensured.

When the total distance by which the blade leg is sunk reaches the target distance, step S60 may be performed.

Step S60: and finishing the construction of the assembled open caisson.

And after the total sinking distance of the blade legs reaches the target distance, the overall height of the open caisson correspondingly reaches the target height, so that the construction of the assembled open caisson can be completed.

The position of the cushion layer for installing the blade foot is determined in the foundation pit, the cushion layer is installed or poured, the blade foot is installed or poured on the cushion layer, and thus the blade foot with the corresponding size and the corresponding type can be determined according to different construction environments. For example, the cushion layer, the edge foot and the like prefabricated in advance are installed, so that the construction time can be saved, and the quality of the cushion layer and the edge foot can be ensured; and the cushion layer and the blade are manufactured on site by adopting a pouring mode, so that the flexibility is higher, and the investigation of the construction environment in the early stage is not relied on. The open caisson wall is assembled by prefabricated concrete segments manufactured in advance, so that the quality of the concrete segments can be guaranteed, compared with a field manufacturing mode, a series of processes of binding steel bars, erecting templates, reinforcing, pouring concrete, waiting for the concrete to reach certain strength, removing the mold, maintaining and the like are not needed, the prefabricated concrete segments can be connected with the cutting edge and the adjacent prefabricated concrete segments through the connecting assemblies of the prefabricated concrete segments to manufacture the well wall layer, and the construction time of the open caisson wall is greatly saved. And the wall layer of the well is constructed in a staggered and laminated mode, so that the quality and reliability of the wall of the open caisson can be ensured, and the construction quality of the open caisson is ensured. Compared with the traditional open caisson construction mode, the assembled open caisson construction method provided by the embodiment of the application can greatly shorten the open caisson construction period (the traditional open caisson construction period is usually 15-20 days, but the scheme can be shortened to 7-8 days) while ensuring the open caisson construction quality, can control the construction budget as much as possible, reduces the flow and labor required by construction, and saves the construction cost. In addition, the prefabricated concrete segment is adopted to assemble the open caisson wall, and the transportation problem and the cost of the prefabricated concrete segment can be considered due to the controllable amount of the prefabricated concrete segment, so that the transportation of the prefabricated concrete segment is facilitated.

To sum up, the embodiment of the application provides a precast concrete section of jurisdiction of assembled open caisson, precast concrete section of jurisdiction is equipped with a plurality ofly to be used for the coupling assembling who is connected with adjacent part (promptly, with this precast concrete section of jurisdiction adjacent precast concrete section of jurisdiction or sword foot), through coupling assembling, can realize being connected of precast concrete section of jurisdiction and adjacent part, a plurality of precast concrete sections that are located same level and connect gradually can constitute week side confined well wall layer, and lie in adjacent level and adjacent connection of precast concrete section of jurisdiction and can realize the crisscross range upon range of between the well wall layer, and, through coupling assembling, precast concrete section of jurisdiction can also be connected with the sword foot, thereby assemble into the open caisson that contains the sword foot. Because the prefabricated concrete pipe piece can constitute the main part of the open caisson wall of a well, and can prefabricate in advance, be favorable to guaranteeing the quality of open caisson construction, reduce the cycle of open caisson construction. And the connection between the precast concrete segment and the adjacent component is realized through the connecting component on the precast concrete segment, so that the operation is simple, the construction is convenient, and the connection quality and the reliability are favorably ensured.

The above description is only an example of the present application and is not intended to limit the scope of the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims (7)

1. The prefabricated concrete pipe piece of the assembled open caisson is characterized in that the assembled open caisson comprises a blade and an open caisson wall, the open caisson wall comprises a plurality of staggered and laminated well wall layers, each well wall layer is composed of a plurality of prefabricated concrete pipe pieces,

the precast concrete duct piece is provided with a plurality of connecting components for connecting with adjacent components, wherein the adjacent components represent precast concrete duct pieces or blade feet adjacent to the precast concrete duct piece;

prefabricated concrete section of jurisdiction coupling assembling with the coupling assembling of adjacent part is connected, realizes the connection of prefabricated concrete section of jurisdiction and adjacent part, wherein, be located same level and connect gradually a plurality of prefabricated concrete section of jurisdiction constitutes week side confined well wall layer, is located adjacent level and adjacent prefabricated concrete section of jurisdiction and realizes being connected with the well wall layer of adjacent level through respective coupling assembling.

2. The prefabricated concrete segment of the assembled open caisson of claim 1, wherein a limiting component is arranged at the edge of the prefabricated concrete segment adjacent to the adjacent component, and the limiting component of the prefabricated concrete segment is matched with the limiting component of the adjacent component to realize the mutual limiting between the prefabricated concrete segment and the adjacent component.

3. The precast concrete segment of an assembled caisson of claim 2, wherein the limiting component of the precast concrete segment is one of a groove and a protrusion, and the limiting component on the adjacent component for matching with the limiting component of the precast concrete segment is the other of the groove and the protrusion.

4. The prefabricated concrete segment for the assembled open caisson of claim 1, wherein the connecting assembly of the prefabricated concrete segment is one of a nut or a bolt, and the connecting assembly of the adjacent members for connecting with the connecting assembly of the prefabricated concrete segment is the other one of a nut or a bolt.

5. The prefabricated concrete segment for the assembled open caisson according to claim 1, wherein the cross section of the wall of the open caisson is circular, the prefabricated concrete segment has a radian, and the diameter of the circle corresponding to the radian is 5-7 meters.

6. The prefabricated concrete segment for the assembled open caisson of claim 1, wherein the height of the prefabricated concrete segment is 0.5-2 m.

7. The precast concrete segment of an assembled caisson of claim 1, wherein the precast concrete segment is a concrete structure containing reinforcing steel bars.

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