Steel locating frame and composite retaining pile assembled by the steel locating frame

Abstract

The present invention discloses a steel positioning frame, including a positioning frame body, wherein the left side of the positioning frame body is provided with a first connection portion matching with a steel sheet pile, and the right side of the positioning frame body is provided with a second connection portion matching with a supporting main pile. A composite retaining pile assembled by a steel positioning frame includes a supporting main pile, including a plurality of vertical supporting piles arranged side by side, wherein the vertical supporting piles are "H"-shaped steels, and the supporting main piles are used to bear the lateral earth pressure of a foundation pit; a water-stopping auxiliary pile, wherein the water-stopping auxiliary pile includes a plurality of steel sheet piles interlocked and connected with each other, wherein the steel sheet piles are "U"-shaped steel sheet piles, and the water-stopping auxiliary piles are used to block groundwater from entering a foundation pit, and some of the steel sheet piles are connected with the vertical supporting piles; this structure can not only improve the installation accuracy of the retaining piles, but also improve their bending resistance, so that they can reliably support the lateral earth pressure of the foundation pit.

Description

Technical Field

[0001] The invention relates to the field of building construction, and in particular to a steel positioning frame and a composite retaining pile assembled by the steel positioning frame. Background Art

[0002] The construction of foundation pits for buildings or structures usually starts with the construction of foundation pit retaining piles, and then the excavation of the foundation pit. The more mature retaining pile walls among the current foundation pit retaining piles include SMW piles and U-shaped steel sheet piles. Among them, SMW piles play a water-stopping role through the mixed cement soil and are the water-blocking walls of the foundation pit, but their construction process consumes a lot of cement, and cement will produce a lot of dust, waste mud and replacement soil during transportation and mixing, causing environmental pollution; and although U-shaped steel sheet piles have a good water-stopping effect, their bending resistance is weak and they cannot reliably support the lateral soil pressure of the foundation pit.

[0003] For example, the patent number is 201821484994.9, which is an assembled composite retaining pile in which an I-beam and a U-shaped steel sheet pile are engaged, and the U-shaped steel sheet pile is connected to the corresponding vertical support pile by a buckle structure or an insertion structure. The buckle structure includes a gusset plate arranged on opposite sides of the groove of the U-shaped steel sheet pile, and a plug-in groove is formed between the gusset plate and the bottom surface of the groove of the U-shaped steel sheet pile, and the flange plate of the I-beam is inserted in the plug-in groove to realize the connection between the U-shaped steel sheet pile and the vertical support pile.

[0004] The plug-in structure includes a clamping plate arranged on the two side plates in a one-to-one correspondence, and the clamping plate includes a clamping plate and a connecting plate connecting the clamping plate and the corresponding side plate. The clamping plate and the corresponding side plate are located on opposite sides of the web, and an insertion groove is formed between the clamping plate and the web. The flange plate of the I-beam is inserted in the insertion groove to realize the connection between the U-shaped steel sheet pile and the vertical support pile.

[0005] When the above-mentioned snap-fit ​​structure is used for connection, since the snap-fit ​​structure only positions the U-shaped steel sheet piles and the vertical supporting piles in the horizontal plane Y direction through the snap plates and the tightening steel plates, and since the snap plates and the tightening steel plates position the vertical supporting piles in the horizontal plane Y direction, the snap plates and the tightening steel plates are not in the same straight line, and there are certain errors in the installation process, which not only leads to low accuracy of the installed retaining piles, but also weak bending resistance, and is unable to reliably support the lateral earth pressure of the foundation pit.

[0006] The above-mentioned plug-in structure connection method is adopted. Since the plug-in structure adopts the connection method of the locking plate and the connecting plate, this connection method cannot accurately position the U-shaped steel sheet pile and the vertical support pile in the horizontal plane X direction and Y direction. There are certain errors in the installation process, which not only leads to low accuracy of the installed retaining piles, but also weak bending resistance, and cannot reliably support the lateral earth pressure of the foundation pit.

[0007] In view of this, the present application proposes a steel positioning frame and a composite retaining pile assembled by the steel positioning frame. Summary of the invention

[0008] The purpose of the present invention is to provide a steel locating frame and a composite retaining pile assembled by the steel locating frame in view of the deficiencies of the prior art.

[0009] In order to solve the above technical problems, the following technical solutions are adopted:

[0010] The steel positioning frame comprises a positioning frame body, characterized in that a first connecting portion matching with a steel sheet pile is provided on the left side of the positioning frame body, and a second connecting portion matching with a vertical support pile is provided on the right side of the positioning frame body.

[0011] Furthermore, the first connecting portion comprises at least two first connecting folded rods bent downward, and a "semi-U"-shaped connecting groove is formed between the two first connecting folded rods;

[0012] Or the first connecting portion includes at least two first connecting folded rods bent downward, and an inverted "half-U"-shaped connecting groove is formed between the two first connecting folded rods.

[0013] Furthermore, the second connecting part includes two upper first connecting straight rods and two lower second connecting straight rods, a first slot is formed between the two upper first connecting straight rods, a first slot is formed between the two lower second connecting straight rods, and a "semi-H" type connecting groove is formed between the first slots.

[0014] Furthermore, a first supporting connecting rod is provided at the lower portion of the first connecting portion.

[0015] Furthermore, a second supporting link is provided at the lower portion of the first connecting portion, and a third supporting link is provided at the upper portion of the second connecting portion.

[0016] Furthermore, the second connection part is connected to the third connection part via a connection plate, the structure of the third connection part is the same as that of the second connection part, and an "H"-shaped connection groove is formed between the second connection part and the third connection part.

[0017] A composite retaining pile assembled by a steel positioning frame, characterized in that:

[0018] The supporting main piles include a number of vertical supporting piles arranged side by side. The vertical supporting piles are "H"-shaped steel. The supporting main piles are used to bear the lateral soil pressure of the foundation pit;

[0019] Water-stop auxiliary piles, which include a number of steel sheet piles that are interlocked and connected to each other. The steel sheet piles are "U"-shaped steel sheet piles. The water-stop auxiliary piles are used to block groundwater from entering the foundation pit. Some of the steel sheet piles are connected to the vertical support piles.

[0020] The steel sheet pile matches the first connection portion, and the vertical support pile matches the second connection portion.

[0021] Furthermore, the position of the steel sheet pile is positioned through the first connection part of the positioning frame body; and the position of the vertical support pile is positioned through the second connection part of the positioning frame body.

[0022] The above technical solution has the following beneficial effects:

[0023] The present invention is a steel positioning frame and a composite retaining pile assembled by the steel positioning frame. The positions of the steel sheet pile and the supporting main pile are limited respectively by the first connecting part and the second connecting part of the steel positioning frame. Since the first connecting part forms a "semi-U"-shaped connecting groove between two first connecting folding rods, the "semi-U"-shaped connecting groove matches the shape of the steel sheet pile. After the first connecting part and the steel sheet pile are assembled, no offset will occur in the horizontal plane. In addition, the second connecting part forms a "semi-H"-shaped connecting groove between the first slot and the first slot. The "semi-H"-shaped connecting groove matches the shape of the supporting main pile. After the second connecting part and the supporting main pile are assembled, no offset will occur in the horizontal plane, thereby overcoming the technical problems existing in the ordinary buckle structure and the plug-in structure in the prior art, so that there will be no error in the installation process, which can not only improve the installation accuracy of the retaining pile, but also improve its bending resistance, so that it can reliably support the lateral soil pressure of the foundation pit. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present invention will be further described below in conjunction with the accompanying drawings:

[0025] Figure 1 This is a schematic structural diagram of a medium-sized steel positioning frame according to Example 1 of the present invention;

[0026] Figure 2 This is a structural schematic diagram of a medium-sized steel positioning frame matched with a supporting main pile and a water-stopping auxiliary pile in Example 1 of the present invention;

[0027] Figure 3 This is a schematic diagram of the structure of a medium-sized steel positioning frame according to Embodiment 2 of the present invention;

[0028] Figure 4 This is a structural schematic diagram of a medium-sized steel positioning frame matched with a supporting main pile and a water-stopping auxiliary pile in Example 2 of the present invention;

[0029] Figure 5It is a schematic structural diagram of a composite retaining pile assembled by a steel positioning frame in Example 1 of the present invention;

[0030] Figure 6 It is a schematic structural diagram of a composite retaining pile assembled by a steel positioning frame in Example 2 of the present invention;

[0031] Figure 7 This is a schematic structural diagram of a medium-sized steel positioning frame according to Embodiment 3 of the present invention;

[0032] Figure 8 This is a structural schematic diagram of a medium-sized steel positioning frame matched with a supporting main pile and a water-stopping auxiliary pile in Example 3 of the present invention;

[0033] Fig. 9 This is a schematic structural diagram of a medium-sized steel positioning frame according to Embodiment 4 of the present invention;

[0034] Fig.10 This is a schematic structural diagram of a medium-sized steel positioning frame matched with supporting main piles and water-stop auxiliary piles in Example 5 of the present invention.

[0035] In the figure: 1-positioning frame body; 2-first connecting part; 3-second connecting part; 4-first supporting link; 5-second supporting link; 6-third supporting link; 7-water-stop auxiliary pile; 8-supporting main pile; 21-first connecting folding rod; 22-"half U" type connecting groove; 31-first connecting straight rod; 32-second connecting straight rod; 33-"half H" type connecting groove; 34-third connecting part; 35-"H" type connecting groove. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention is further described in detail below through the accompanying drawings and embodiments. However, it should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the scope of the present invention. In addition, in the following description, the description of known structures and technologies is omitted to avoid unnecessary confusion of the concept of the present invention.

[0037] Example 1

[0038] like Figure 1 to Figure 2 As shown, the steel positioning frame includes a positioning frame body 1, a first connecting portion 2 matching the steel sheet pile is provided on the left side of the positioning frame body 1, and a second connecting portion 3 matching the vertical support pile is provided on the right side of the positioning frame body 1.

[0039] Specifically, the first connecting portion 2 includes at least two first connecting folded rods 21 bent downward, and a "semi-U"-shaped connecting groove 22 is formed between the two first connecting folded rods 21. Specifically, the steel sheet pile is a U-shaped Larsen steel sheet pile, which has a good water-stopping effect, and holes can be punched on its web at regular intervals. In the actual assembly process, by matching the "semi-U"-shaped connecting groove 22 with half of the U-shaped Larsen steel sheet pile, the design angle of the "semi-U"-shaped connecting groove 22 matches the U-shaped Larsen steel sheet pile, forming a good installation adaptation effect.

[0040] Furthermore, the second connecting portion 3 includes two upper first connecting straight rods 31 and two lower second connecting straight rods 32, a first slot is formed between the two upper first connecting straight rods 31, a first slot is formed between the two lower second connecting straight rods 32, and a "semi-H"-shaped connecting groove 33 is formed between the first slots.

[0041] Specifically, the vertical support piles are H-type support main piles, which have a good soil retaining effect, and holes are punched on the flanges at regular intervals (the holes correspond to the U-shaped Larsen steel sheet piles). In the actual assembly process, by matching the "half H" type connection groove 33 with half of the H-type support main pile, the design angle of the "half H" type connection groove 33 matches the H-type support main pile, forming a good installation adaptation effect.

[0042] Furthermore, a first supporting link 4 is provided at the lower part of the first connecting portion 2. The first supporting link 4 is a reinforcing rib plate, which is beneficial to strengthening the overall strength of the steel positioning frame.

[0043] See also Figure 5 , composite retaining piles assembled by steel positioning frames, including

[0044] The main supporting piles 8 include a plurality of vertical supporting piles arranged side by side. The vertical supporting piles are "H"-shaped steels. The main supporting piles 8 are used to bear the lateral soil pressure of the foundation pit.

[0045] The water-stop auxiliary piles 7 include a plurality of steel sheet piles that are interlocked and connected to each other. The steel sheet piles are U-shaped steel sheet piles. The water-stop auxiliary piles 7 are used to block groundwater from entering the foundation pit. Some of the steel sheet piles are connected to the vertical support piles.

[0046] The steel sheet pile matches the first connection part 2 , and the vertical support pile matches the second connection part 3 .

[0047] The position of the steel sheet pile is positioned through the first connection part 2 of the positioning frame body 1; the position of the vertical support pile is positioned through the second connection part 3 of the positioning frame body 1.

[0048] See also Figure 5, the specific assembly process is as follows:

[0049] Step 1: Locate and position. According to the size of the supporting main pile 8 and the water-stop auxiliary pile 7, determine the inner positioning line, the middle positioning line and the outer positioning line, and construct the first Larsen U-shaped steel sheet pile so that the U-shaped bottom surface of the Larsen U-shaped steel sheet pile coincides with the middle positioning line;

[0050] Step 2: Place the steel locating frame and match the "half U" shaped connecting groove 22 of the steel locating frame with one side of the Larsen U-shaped steel sheet pile;

[0051] Step 3: Insert the pure H-shaped steel section at the bottom of the first HU composite pile to ensure that the pure H-shaped steel section matches the "semi-H"-shaped connecting groove 33 of the steel positioning frame, and fix the pure H-shaped steel section to the first connecting straight rod 31 and the second connecting straight rod 32 of the second connecting part 3 by bolts to ensure that the pure H-shaped steel section and the Larsen U-shaped steel sheet pile are installed and connected along the predetermined inner positioning line, middle positioning line and outer positioning line.

[0052] Step 4: Remove the steel positioning frame, insert the upper part of the first HU composite pile, and complete the assembly of the first vertical support pile and steel sheet pile;

[0053] Step 5: Insert the second Larsen steel sheet pile according to the positioning coordinates;

[0054] Step 6: Repeat steps 2-5 to complete the installation of the second HU composite pile.

[0055] Example 2

[0056] like Figure 3 to Figure 4 As shown, the steel positioning frame includes a positioning frame body 1, a first connecting portion 2 matching the steel sheet pile is provided on the left side of the positioning frame body 1, and a second connecting portion 3 supporting the main pile 8 is provided on the right side of the positioning frame body 1.

[0057] The first connecting portion 2 includes at least two first connecting folded rods 21 bent downward, and an inverted “half-U” shaped connecting groove 22 is formed between the two first connecting folded rods 21 .

[0058] Specifically, the steel sheet pile is a U-shaped Larsen steel sheet pile, which has a good water-stopping effect, and holes can be punched on its web at regular intervals. In the actual assembly process, by matching the "half U"-shaped connecting groove 22 with half of the U-shaped Larsen steel sheet pile, the design angle of the "half U"-shaped connecting groove 22 matches the U-shaped Larsen steel sheet pile, forming a good installation adaptation effect.

[0059] Furthermore, the second connecting portion 3 includes two upper first connecting straight rods 31 and two lower second connecting straight rods 32, a first slot is formed between the two upper first connecting straight rods 31, a first slot is formed between the two lower second connecting straight rods 32, and a "semi-H"-shaped connecting groove 33 is formed between the first slots.

[0060] Specifically, the vertical support pile is an H-type support main pile 8, which has a good soil retaining effect, and holes are punched on the flange at a certain interval (the holes correspond to the U-type Larsen steel sheet piles). In the actual assembly process, by matching the "half H" type connection groove 33 with half of the H-type support main pile 8, the design angle of the "half H" type connection groove 33 matches the H-type support main pile 8, forming a good installation adaptation effect.

[0061] Further, a second supporting link 5 is provided at the lower part of the first connecting part 2, and a third supporting link 6 is provided at the upper part of the second connecting part 3. The second supporting link 5 and the third supporting link 6 are reinforcing ribs, which are beneficial to strengthening the overall strength of the steel positioning frame.

[0062] See also Figure 6 , composite retaining piles assembled by steel positioning frames, including

[0063] The supporting main piles 8 include a plurality of vertical supporting piles arranged side by side. The vertical supporting piles are "H"-shaped steels. The supporting main piles 8 are used to bear the lateral soil pressure of the foundation pit.

[0064] A water-stop auxiliary pile 7, which includes a plurality of steel sheet piles that are interlocked and connected to each other. The steel sheet piles are "U"-shaped steel sheet piles. The water-stop auxiliary piles 7 are used to block groundwater from entering the foundation pit. Some of the steel sheet piles are connected to the vertical support piles.

[0065] The steel sheet pile matches the first connecting part 2 , and the vertical support pile matches the second connecting part 3 .

[0066] Furthermore, the position of the steel sheet pile is positioned through the first connection portion 2 of the positioning frame body 1; and the position of the vertical support pile is positioned through the second connection portion 3 of the positioning frame body 1.

[0067] See also Figure 5 , the specific assembly process is as follows:

[0068] Step 1: Locate and position. According to the size of the supporting main pile 8 and the water-stop auxiliary pile 7, determine the inner positioning line, the middle positioning line and the outer positioning line, and construct the first Larsen U-shaped steel sheet pile so that the U-shaped bottom surface of the Larsen U-shaped steel sheet pile coincides with the middle positioning line;

[0069] Step 2: Place the steel locating frame and match the "half U" shaped connecting groove 22 of the steel locating frame with one side of the Larsen U-shaped steel sheet pile;

[0070] Step 3: Insert the pure H-shaped steel section at the bottom of the first HU composite pile to ensure that the pure H-shaped steel section matches the "semi-H"-shaped connecting groove 33 of the steel positioning frame, and fix the pure H-shaped steel section to the first connecting straight rod 31 and the second connecting straight rod 32 of the second connecting part 3 by bolts to ensure that the pure H-shaped steel section and the Larsen U-shaped steel sheet pile are installed and connected along the predetermined inner positioning line, middle positioning line and outer positioning line.

[0071] Step 4: Remove the steel positioning frame, insert the upper part of the first HU composite pile, and complete the assembly of the first vertical support pile and steel sheet pile;

[0072] Step 5: Insert the second Larsen steel sheet pile according to the positioning coordinates;

[0073] Step 6: Repeat steps 2-5 to complete the installation of the second HU composite pile.

[0074] Example 3

[0075] See also Figure 7 and Figure 8 The difference from Example 1 is that, based on Example 1, the second connection part 3 of the steel positioning frame is connected to the third connection part 34 through a connecting plate, the structure of the third connection part 34 is the same as the structure of the second connection part 3, and an "H"-shaped connecting groove 35 is formed between the second connection part 3 and the third connection part 34 to form a new steel positioning frame.

[0076] By forming the "H"-shaped connection groove 35, the entire vertical support pile is matched to ensure that the vertical support pile and the steel sheet pile will not deviate from the original set direction during the assembly process, further improving the installation accuracy of the retaining pile and its bending resistance.

[0077] Example 4

[0078] See also Fig. 9 and Fig.10 The difference from Example 2 is that, based on Example 2, the second connection part 3 of the steel positioning frame is connected to the third connection part 34 through a connecting plate, the structure of the third connection part 34 is the same as the structure of the second connection part 3, and an "H"-shaped connecting groove 35 is formed between the second connection part 3 and the third connection part 34 to form a new steel positioning frame.

[0079] By forming the "H"-shaped connection groove 35, the entire vertical support pile is matched to ensure that the vertical support pile and the steel sheet pile will not deviate from the original set direction during the assembly process, further improving the installation accuracy of the retaining pile and its bending resistance.

[0080] The present invention is a steel locating frame and a composite retaining pile assembled by the steel locating frame. The positions of the steel sheet pile and the supporting main pile 8 are limited respectively by the first connecting part 2 and the second connecting part 3 of the steel locating frame. Since the first connecting part 2 forms a "semi-U"-shaped connecting groove 22 between two first connecting folding rods 21, the "semi-U"-shaped connecting groove 22 matches the shape of the steel sheet pile. After the first connecting part 2 and the steel sheet pile are assembled, no deviation will occur in the horizontal plane. In addition, the second connecting part 3 forms a "semi-H"-shaped connecting groove 33 between the first slot and the first slot. The "semi-H"-shaped connecting groove 33 matches the shape of the supporting main pile 8. After the second connecting part 3 and the supporting main pile 8 are assembled, no deviation will occur in the horizontal plane, thereby overcoming the technical problems existing in the common buckling structure and the plug-in structure in the prior art, so that there will be no error in the installation process, which can not only improve the installation accuracy of the retaining pile, the installed vertical supporting pile and steel sheet pile will not deviate from the original preset position, but also improve its bending resistance, so that it can reliably support the lateral soil pressure of the foundation pit.

[0081] The supporting main piles 8 bear the lateral earth pressure of the foundation pit through vertical supporting piles, and have the characteristic of strong bending resistance. The water-stopping auxiliary piles 7 block groundwater from entering the foundation pit through U-shaped steel sheet piles that are interlocked and connected to each other. It has good water-stopping ability without the use of cement, which is beneficial to environmental protection; and the water-stopping auxiliary piles 7 are supported by connecting the vertical supporting piles with some U-shaped steel sheet piles, so that the assembled composite retaining piles not only have strong bending resistance and can reliably support the lateral earth pressure of the foundation pit, but also have good water-stopping ability without the use of cement, which is beneficial to environmental protection.

[0082] The above are only specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent replacements or modifications made based on the present invention to solve basically the same technical problems and achieve basically the same technical effects are all included in the protection scope of the present invention.

Claims

1. A steel positioning frame, including a positioning frame body, characterized in that: A first connection portion matching the steel sheet pile is provided on the left side of the positioning frame body, and a second connection portion matching the vertical support pile is provided on the right side of the positioning frame body; The first connecting portion comprises at least two first connecting folded rods bent downward, and a "semi-U"-shaped connecting groove is formed between the two first connecting folded rods; Or the first connecting portion includes at least two first connecting folded rods bent downward, and an inverted "half-U"-shaped connecting groove is formed between the two first connecting folded rods; The second connecting portion includes two upper first connecting straight rods and two lower second connecting straight rods, a first slot is formed between the two upper first connecting straight rods, a first slot is formed between the two lower second connecting straight rods, and a "semi-H" shaped connecting groove is formed between the first slots; The second connection part is connected to the third connection part through a connection plate, the structure of the third connection part is the same as that of the second connection part, and an "H"-shaped connection groove is formed between the second connection part and the third connection part; A first supporting link is provided at the lower portion of the first connecting portion; A second supporting link is disposed at the lower portion of the first connecting portion, and a third supporting link is disposed at the upper portion of the second connecting portion.

2. A composite retaining pile assembled by a steel positioning frame, characterized in that: A steel positioning frame comprising the steel positioning frame as claimed in claim 1; The supporting main piles include a number of vertical supporting piles arranged side by side. The vertical supporting piles are "H"-shaped steel. The supporting main piles are used to bear the lateral soil pressure of the foundation pit; Water-stop auxiliary piles, which include a number of steel sheet piles that are interlocked and connected to each other. The steel sheet piles are U-shaped steel sheet piles. The water-stop auxiliary piles are used to block groundwater from entering the foundation pit. Some of the steel sheet piles are connected to the vertical support piles. The steel sheet pile is positioned by the first connection part of the positioning frame body; the vertical support pile is positioned by the second connection part of the positioning frame body; The steel sheet pile matches the first connection portion, and the vertical support pile matches the second connection portion.

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