A pushing head structure, pushing system and construction method

Abstract

The application discloses a pushing head structure, a pushing system and a construction method, wherein the pushing head structure comprises a wall body and a pushing head; the wall body is provided with reserved steel bars extending towards a pushing direction on an end surface of the wall body facing the pushing direction; the pushing head is arranged at one end of the wall body facing the pushing direction; the pushing head comprises a pushing part, the width of the pushing part gradually decreases along the pushing direction; the pushing head comprises a shell arranged between the wall body and the pushing part; a supporting part is arranged in the shell; the shell is connected with the outer peripheral surface of the wall body; the supporting part is arranged away from the reserved steel bars; one end of the supporting part is in abutment with the wall body, and the other end of the supporting part is fixedly connected with the pushing part; and a space for extending into the reserved steel bars is arranged between the supporting part and the inner wall of the shell. The pushing head structure can ensure that the wall body is smoothly pushed, has high construction efficiency and good construction quality.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of continuous wall construction, and particularly relates to a pushing head structure, a pushing system and a construction method. BACKGROUND

[0002] At present, in the pushing construction of the underground continuous wall, the soil and sand will gradually accumulate on the surface of the first section of the underground continuous wall during the pushing process, and more soil and sand will accumulate due to the reserved steel bars arranged on the wall body for later linking, so that the resistance is increased, and the continuous wall deviates or cannot be normally pushed. SUMMARY

[0003] The application aims to at least solve one of the problems in the prior art, and provides a pushing head structure, a pushing system and a construction method, wherein the pushing head structure can improve the construction efficiency of the underground continuous wall.

[0004] The application adopts the technical scheme that

[0005] A pushing head structure comprises a wall body and a pushing head, the wall body is provided with a reserved steel bar extending in the pushing direction on the end face in the pushing direction, the pushing head is arranged at one end of the wall body in the pushing direction, the pushing head comprises a pushing part, the width of the pushing part gradually decreases along the pushing direction, the pushing head comprises a shell arranged between the wall body and the pushing part, the shell is provided with a support part, the shell is connected with the outer circumferential surface of the wall body, the support part is arranged away from the reserved steel bar, one end of the support part is in abutment with the wall body, and the other end is fixedly connected with the pushing part, and a space for extending into the reserved steel bar is arranged between the support part and the inner wall of the shell.

[0006] Preferably, the reserved steel bar is arranged along the inner circumferential surface of the end face of the wall body, and the support part is in abutment with the middle position of the end face of the wall body.

[0007] Preferably, the cross section of the pushing head is in the shape of a circular arc, a trapezoid or a triangle.

[0008] Preferably, a first channel steel is arranged on the pushing part in the height direction, one end of the support part is fixedly connected with the first channel steel, and the other end extends towards the wall body.

[0009] Preferably, the support part comprises a second channel steel arranged in the pushing direction, one end of the second channel steel is fixedly connected with the first channel steel, and the other end extends towards the wall body.

[0010] Preferably, the supporting component comprises a third channel steel arranged in the height direction, which is arranged between the second channel steel and the wall body and fixedly connected with the second channel steel.

[0011] Preferably, an angle steel for connecting the wall body is arranged on the shell, which is arranged at the position of the four corners of the wall body.

[0012] Preferably, a connecting plate is arranged between adjacent angle steels, which is connected with the angle steels through bolts.

[0013] The application further provides a pushing system, comprising a starting well, a receiving well and the pushing head structure of any one of the above.

[0014] The application further provides a construction method using the pushing system, comprising the following steps:

[0015] Step one: after the wall body of the first section of underground continuous wall is installed in the starting well, the pushing head is installed, so that the shell covers the end of the wall body towards the pushing direction;

[0016] Step two: the pushing head is fixedly connected with the wall body.

[0017] Step three: the wall body of the continuous wall is pushed, and after the wall body enters the receiving well, the pushing head is removed and adjusted out of the receiving well.

[0018] The shell of the pushing head structure wraps the end of the wall body, which can protect the reserved steel bars on the end face of the wall body, and avoid the increase of resistance caused by the accumulation of soil and stones on the surface of the wall body during the pushing process. The supporting component plays a supporting role, ensures the structural stability of the pushing part, and enables the pushing part to assist in cutting soil towards the pushing direction. The width of the pushing part gradually decreases along the pushing direction, so as to reduce the resistance received by the pushing part during the pushing process, ensure the smooth pushing of the wall body, and improve the construction efficiency and construction quality.

[0019] Additional aspects and advantages of the application will be described in part below, will become apparent from the following description, or will be learned by practicing the application. BRIEF DESCRIPTION OF DRAWINGS

[0020] The above and / or additional aspects and advantages of the application will become apparent and be readily understood from the following description, taken in conjunction with the accompanying drawings, in which:

[0021] Figure 1 is a top view of one embodiment of the pushing head structure of the application;

[0022] Figure 2 is a structural schematic diagram of the pushing head in the present application;

[0023] Figure 3 is a sectional view at A-A in the present application; Figure 2

[0024] Figure 4 is a top view of an embodiment of the pushing system in the present application. DETAILED DESCRIPTION

[0025] This part will describe the specific embodiments of the present application in detail, the preferred embodiments of the present application are shown in the accompanying drawings, the role of the drawings is to supplement the description of the text part of the description, so that people can intuitively and visually understand each technical feature and the overall technical scheme of the present application, but it cannot be understood as a limitation on the protection scope of the present application.

[0026] In the present application, if the direction (up, down, left, right, front and back) is described, it is only for the convenience of describing the technical scheme of the present application, and is not intended to indicate or imply that the indicated technical feature must have a specific orientation, be constructed and operated in a specific orientation, therefore it cannot be understood as a limitation on the present application.

[0027] In the present application, the meaning of "several" is one or more, the meaning of "multiple" is two or more, "greater than", "less than", "more than" and the like are not included in the number; "above", "below", "within" and the like are understood to include the number. In the description of the present application, if "first" and "second" are described, they are only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the sequence of indicated technical features.

[0028] In the present application, unless otherwise explicitly limited, the words "set", "install", "connect" and the like should be understood broadly, for example, they can be directly connected, or indirectly connected through an intermediate medium; can be fixedly connected, or can be detachably connected, or can be integrally formed; can be mechanically connected, or can be electrically connected or capable of communicating with each other; can be the communication or interaction relationship between two elements. The skilled in the art can reasonably determine the specific meaning of the above words in the present application in combination with the specific content of the technical scheme.

[0029] In the present application, Figure 1 , Figure 2 and Figure 3 give a reference direction coordinate system of the embodiment of the present application, the embodiment of the present application is described in combination with the directions shown in Figure 1 , Figure 2 and Figure 3 , wherein, Figure 1 ,​Figure 2 and Figure 3 The arrow direction is the pushing direction.

[0030] The embodiment of the application provides a pushing head structure, referring to Figure 1 , comprising a wall body 100 and a pushing head 200, the wall body 100 is provided with reserved steel bars extending in the pushing direction on the end face towards the pushing direction, the pushing head 200 is arranged at one end of the wall body 100 towards the pushing direction, the pushing head 200 comprises a pushing part 210, the width of the pushing part 210 gradually decreases along the pushing direction, the pushing head 200 comprises a shell 220 arranged between the wall body 100 and the pushing part 210, the shell 220 is internally provided with a supporting part 230, the shell 220 is connected with the outer circumferential surface of the wall body 100, the supporting part 230 is arranged away from the reserved steel bars, one end of the supporting part 230 is in abutment with the wall body 100, the other end is fixedly connected with the pushing part 210, the supporting part 230 and the inner wall of the shell 220 are provided with a space 221 for extending into the reserved steel bars, the shell 220 of the pushing head structure wraps the one end of the wall body 100, can protect the reserved steel bars on the end face of the wall body 100, meanwhile, the resistance increase caused by the accumulation of soil and stones on the surface of the wall body 100 in the pushing process is avoided, the supporting part 230 plays a supporting role, guarantees the structural stability of the pushing part 210, so that the pushing part 210 can assist in cutting soil in the pushing direction, the width of the pushing part 210 gradually decreases along the pushing direction, so as to reduce the resistance received by the pushing part 210 in the pushing process, guarantee the smooth pushing of the wall body 100, the construction efficiency is high, and the construction quality is good.

[0031] In some embodiments, the reserved steel bars are arranged along the inner circumferences of the end faces of the wall body 100, referring to Figure 2 , the supporting part 230 is in abutment with the middle position of the end face of the wall body 100.

[0032] Preferably, the cross section of the pushing head 200 is in a circular arc shape, a trapezoidal shape or a triangular shape, referring to Figure 2 , the cross section of the pushing head 200 is in a semicircular arc shape, so as to reduce the resistance received by the pushing head 200 in the pushing process.

[0033] As a preferred embodiment of the application, referring to Figure 1 , a first channel steel 211 is arranged on the pushing part 210 along the height direction, one end of the supporting part 230 is fixedly connected with the first channel steel 211, and the other end extends towards the wall body 100.

[0034] Referring to Figure 1 , the supporting part 230 comprises a second channel steel 231 arranged along the pushing direction, one end of the second channel steel 231 is fixedly connected with the first channel steel 211, and the other end extends towards the wall body 100, preferably, the second channel steel 231 is welded with the first channel steel 211.

[0035] Referring to Figure 1 The support component 230 comprises a third channel steel 232 arranged along the height direction, which is arranged between the second channel steel 231 and the wall body 100, and is fixedly connected with the second channel steel 231, preferably, welded connection.

[0036] As a preferred embodiment of the present application, referring to Figure 1 、 Figure 2 The shell 220 is provided with an angle steel 222 for connecting the wall body 100, which is arranged at the position of the four corners of the wall body 100, and wraps the position of the four corners of the wall body 100.

[0037] Referring to Figure 1 The connecting plates 223 are arranged between adjacent angle steels 222, and are connected with the angle steels 222 through bolts, to ensure the stable connection with the wall body 100.

[0038] Referring to Figure 1 The connecting plate 223 is located at the top of the wall body 100, and the wall body 100 is provided with a pre-buried bolt, and the connecting plate 223 is provided with a hole through which the pre-buried bolt passes, and the pre-buried bolt is connected with the connecting plate 223 through the hole through the bolt, to ensure the stable connection of the wall body with the jacking head 200.

[0039] In some embodiments, the bottom surface and the side surface of the wall body 100 are provided with a water stop belt, which has a waterproof effect, preferably, the width of the water stop belt is not less than 30 cm, and the thickness is not less than 1 cm, and after the pasting is completed, lubricating oil is brushed on the water stop belt to facilitate the installation of the jacking head 200.

[0040] The embodiment of the present application also provides a jacking system, referring to Figure 4 Comprising a starting well 300, a receiving well 400 and the jacking head structure of any one of the above embodiments, and the jacking head structure is located between the starting well 300 and the receiving well 400.

[0041] The present application also provides a construction method using the jacking system, comprising the following steps:

[0042] Step one: before jacking in the underground continuous wall, the jacking head 200 is transported to the site, and after the wall body 100 of the first section of the underground continuous wall is installed in the starting well 300, the jacking head 200 is installed, so that the shell 220 covers the end of the wall body 100 facing the jacking direction, preferably, the jacking head 200 is made in sections or as a whole according to the size specification of the underground continuous wall;

[0043] Step two: the push head 200 is fixedly connected with the wall body 100, the installation position of the push head 200 is adjusted to be aligned with the wall body 100, after confirmation, the push head 200 is reversely pushed by a jack to be sleeved with the wall body 100, then the push head 200 and the wall body 100 are fixedly connected through the connecting plate 223, the installation of the push head 200 is completed, and the waterstop is pasted on both sides of the end of the wall body 100 in the pushing direction and the bottom;

[0044] Step three: the wall body 100 of the push wall is pushed, after the wall body 100 enters the receiving well 400, the push head 200 is removed, and the push head 200 is adjusted out of the receiving well 400.

[0045] In the description of the present specification, the description referring to the terms "example", "embodiment" or "some embodiments" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0046] Of course, the present application is not limited to the above-mentioned embodiments, and those skilled in the art can make equivalent modifications or replacements without departing from the spirit of the present application, and these equivalent modifications or replacements are included in the scope defined by the claims of the present application.

Claims

1. A pusher head structure, characterized by: The wall body is provided with reserved steel bars extending in the jacking direction on the end surface thereof facing the jacking direction, and the jacking head is arranged at one end of the wall body facing the jacking direction, and the jacking head comprises a pushing part, the width of the pushing part gradually decreases in the jacking direction, the jacking head comprises a shell arranged between the wall body and the pushing part, the shell is provided with a support part, the shell is connected with the outer circumferential surface of the wall body, the support part is arranged away from the reserved steel bars, one end of the support part abuts against the wall body, and the other end of the support part is fixedly connected with the pushing part, and a space for extending into the reserved steel bars is arranged between the support part and the inner wall of the shell; The shell is provided with angle steels for connecting the wall body, the angle steels are arranged at positions where the four corners of the wall body are located, and connecting plates are arranged between adjacent angle steels, and the connecting plates are connected with the angle steels through bolts.

2. The push-on head structure of claim 1, wherein: The reserved steel bars are arranged along the inner periphery of the end surface of the wall body, and the support part abuts against the middle position of the end surface of the wall body.

3. The push-on head structure of claim 1, wherein: The jacking head has a circular arc shape, a trapezoidal shape or a triangular shape in cross section.

4. The push-on head structure of claim 1, wherein: The pushing part is provided with a first channel steel in the height direction, one end of the support part is fixedly connected with the first channel steel, and the other end of the support part extends towards the wall body.

5. The push-on head structure of claim 4, wherein: The support part comprises a second channel steel arranged in the jacking direction, one end of the second channel steel is fixedly connected with the first channel steel, and the other end of the second channel steel extends towards the wall body.

6. The push-on head structure of claim 5, wherein: The support part comprises a third channel steel arranged in the height direction, the third channel steel is arranged between the second channel steel and the wall body, and the third channel steel is fixedly connected with the second channel steel.

7. A push system characterized by: The jacking head structure of any one of claims 1-6 is arranged between the originating well and the receiving well.

8. A construction method using the push system according to claim 7, characterized by: The method comprises the following steps: Step one: after the wall body of the first section of underground continuous wall is installed in the originating well, the jacking head is installed, and the shell is sleeved on one end of the wall body facing the jacking direction; Step two: the jacking head is fixedly connected with the wall body; Step three: the wall body of the continuous wall is jacked, and after the wall body enters the receiving well, the jacking head is removed, and the jacking head is adjusted out of the receiving well.

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