CN113062373A - Limit bearing capacity detection device and method for front-supported grouting steel pipe pile - Google Patents
Limit bearing capacity detection device and method for front-supported grouting steel pipe pile Download PDFInfo
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- CN113062373A CN113062373A CN202110352890.2A CN202110352890A CN113062373A CN 113062373 A CN113062373 A CN 113062373A CN 202110352890 A CN202110352890 A CN 202110352890A CN 113062373 A CN113062373 A CN 113062373A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 198
- 239000010959 steel Substances 0.000 title claims abstract description 198
- 238000001514 detection method Methods 0.000 title claims abstract description 40
- 238000000034 method Methods 0.000 title claims abstract description 31
- 230000003068 static effect Effects 0.000 claims abstract description 22
- 238000012360 testing method Methods 0.000 claims abstract description 22
- 238000011068 loading method Methods 0.000 claims abstract description 11
- 238000003466 welding Methods 0.000 claims abstract description 8
- 238000006073 displacement reaction Methods 0.000 claims description 19
- 238000010276 construction Methods 0.000 claims description 12
- 238000006243 chemical reaction Methods 0.000 claims description 11
- 238000012544 monitoring process Methods 0.000 claims description 6
- 238000007569 slipcasting Methods 0.000 claims description 2
- 239000002689 soil Substances 0.000 abstract description 3
- 239000004568 cement Substances 0.000 description 3
- 238000005553 drilling Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 229910000746 Structural steel Inorganic materials 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D33/00—Testing foundations or foundation structures
Abstract
The invention discloses a limit bearing capacity detection device and a limit bearing capacity detection method for a front-supported grouting steel pipe pile, wherein the method comprises the steps of arranging a counter-force supporting mechanism between adjacent H-shaped steel of an underground continuous wall constructed by piles in an SMW (soil mixing wall) method; welding a head steel plate at the end part of the front-supporting grouting steel pipe pile; a hydraulic jack is arranged between the end socket steel plate and the counter-force supporting mechanism; the hydraulic jack is connected to a pile foundation static load test analysis system, and output load of the pile foundation static load test analysis system is loaded to the front-supporting type grouting steel pipe pile through the lifting of the hydraulic jack so as to detect the limit bearing capacity of the front-supporting type grouting steel pipe pile. The invention is suitable for detecting the ultimate bearing capacity of the front-supporting grouting steel pipe pile of an inclined strut system, can provide better reverse bearing capacity, and can load the output load on the front-supporting grouting steel pipe pile through the lifting of the hydraulic jack through a static load test analysis system of the pile foundation so as to carry out slow loading detection on the ultimate bearing capacity of the front-supporting grouting steel pipe pile.
Description
Technical Field
The invention relates to the field of constructional engineering, in particular to a device and a method for detecting the ultimate bearing capacity of a front-supporting grouting steel pipe pile.
Background
When the combination of the SMW construction method pile and the front support type grouting steel pipe pile is used as a foundation pit enclosure structure, the front support type grouting steel pipe pile needs to be ensured to have enough bearing capacity so as to ensure the safety of peripheral pipelines and peripheral environments and ensure the key factors of the foundation pit safety in the earth excavation stage. The slow loading detection method can detect whether the ultimate bearing capacity of a single vertical pile foundation meets design requirements, the counter weight block arranged by the pile loading method is used as a counter force supporting mechanism, the front-supporting grouting steel pipe pile is used as an inclined strut system, and the counter force supporting mechanism of the counter weight block is not suitable for the detection, so that the technical problem that how to detect the ultimate bearing capacity of the front-supporting grouting steel pipe pile by the slow loading detection method is urgently needed to be solved in the field is solved.
Disclosure of Invention
The invention aims to solve the technical problem that a limit bearing capacity detection device and method for a front-supporting type grouting steel pipe pile are provided, so that the problem that the limit bearing capacity of the front-supporting type grouting steel pipe pile cannot be detected through a slow loading detection method is solved.
In order to solve the technical problems, the technical scheme provided by the invention is as follows: a limit bearing capacity detection method of a front-supported grouting steel pipe pile comprises the following steps:
the method comprises the following steps that a counter-force supporting mechanism is arranged between adjacent H-shaped steels of the underground diaphragm wall constructed by the SMW pile construction method, the counter-force supporting mechanism comprises an I-shaped steel which is welded between webs of the adjacent H-shaped steels in an inclined mode, a supporting piece which is welded between an upper wing plate of the I-shaped steel and the inner surface of a wing plate on one side of the H-shaped steel, and a lower wing plate of the I-shaped steel is vertically distributed with a front-supporting grouting steel pipe pile;
welding a head steel plate at the end part of the front-supporting grouting steel pipe pile;
a hydraulic jack is arranged between the end socket steel plate and the counter-force supporting mechanism;
and connecting the hydraulic jack to a pile foundation static load test analysis system, and loading the output load of the pile foundation static load test analysis system to the front-supported grouting steel pipe pile through the lifting of the hydraulic jack so as to detect the limit bearing capacity of the front-supported grouting steel pipe pile.
Further, the method for detecting the ultimate bearing capacity of the front-supported grouting steel pipe pile further comprises the following steps:
and monitoring the ultimate bearing capacity of the front-supporting grouting steel pipe pile when monitoring the settlement of the front-supporting grouting steel pipe pile.
Further, the method for detecting the ultimate bearing capacity of the front-supporting grouting steel pipe pile provided by the invention monitors the settlement amount of the front-supporting grouting steel pipe pile through displacement detection devices arranged on two sides of the front-supporting grouting steel pipe pile.
Further, according to the limit bearing capacity detection method of the front-supporting type grouting steel pipe pile provided by the invention, the displacement detection device is fixedly arranged through the fixing pieces arranged on two sides of the front-supporting type grouting steel pipe pile.
Further, in the method for detecting ultimate bearing capacity of a front-supporting grouting steel pipe pile provided by the invention, the supporting piece rod-shaped piece, the plate body with a triangular section or the frame body with a triangular section is adopted.
Further, according to the method for detecting the ultimate bearing capacity of the front-supported grouting steel pipe pile, the supporting piece is a triangular steel plate.
In order to solve the above technical problems, another technical solution provided by the present invention is: the utility model provides a limit bearing capacity detection device of front-supporting slip casting steel-pipe pile, includes:
the counter-force supporting mechanism is welded between adjacent H-shaped steel of the underground continuous wall constructed by the SMW construction method pile; the reaction force supporting mechanism includes:
the I-shaped steel is obliquely welded between webs of adjacent H-shaped steel, so that a lower wing plate of the I-shaped steel is vertically distributed with the front-supporting grouting steel pipe pile;
the supporting piece is welded between the upper wing plate of the I-shaped steel and the inner surface of the wing plate on one side of the H-shaped steel;
the end socket steel plate is welded at the end part of the front support type grouting steel pipe pile;
the hydraulic jack is arranged between the end socket steel plate and the counter-force supporting mechanism;
and the pile foundation static load test analysis system is connected with the hydraulic jack and is used for applying an output load to the front-supporting grouting steel pipe pile through the lifting of the hydraulic jack.
Further, the ultimate bearing capacity detection device of the front-supported grouting steel pipe pile provided by the invention further comprises:
and the displacement detection devices are arranged on two sides of the front-supporting grouting steel pipe pile.
Further, the ultimate bearing capacity detection device of the front-supported grouting steel pipe pile provided by the invention further comprises:
and the fixing pieces are arranged on two sides of the front-supporting type grouting steel pipe pile and used for arranging the displacement detection device on the fixing pieces.
Further, according to the ultimate bearing capacity detection device of the front-supporting grouting steel pipe pile provided by the invention, the supporting piece rod-shaped piece, the plate body with the triangular section or the frame body with the triangular section is adopted.
Compared with the prior art, the invention has the following beneficial effects:
the invention provides a limit bearing capacity detection device and method of a front-supporting type grouting steel pipe pile, which combines the front-supporting type grouting steel pipe pile of an inclined strut system with H-shaped steel of an underground continuous wall constructed by an SMW construction method pile, utilizes the H-shaped steel of the underground continuous wall constructed by the SMW construction method pile, and adopts a counter-force support mechanism arranged between the adjacent H-shaped steel, end socket steel is welded at the end part of the front-supporting grouting steel pipe pile, so that a hydraulic jack connected with a pile foundation static load test analysis system is arranged between the front-supporting grouting steel pipe pile and the counter-force supporting mechanism, because the counter-force supporting mechanism can provide counter-supporting force for the front-supporting grouting steel pipe pile of the inclined strut system, therefore, the output load of the pile foundation static load test analysis system is loaded to the front-supporting grouting steel pipe pile through the lifting of the hydraulic jack, and the low-speed loading detection is carried out on the limit bearing capacity of the front-supporting grouting steel pipe pile. The limit that a counter-force supporting mechanism formed by stacking the counterweight blocks by a stacking method cannot be applied to the front-support grouting steel pipe pile of an inclined strut system is broken through.
According to the limit bearing capacity detection device and method for the front-supporting grouting steel pipe pile, the I-shaped steel of the counter-force supporting mechanism is obliquely welded between the webs of the H-shaped steel, so that the welding strength of the I-shaped steel can be improved, and the reliable connection of the I-shaped steel and the H-shaped steel is guaranteed. The support piece is welded between the upper wing plate of the I-shaped steel and the wing plate of the H-shaped steel, so that the reliable connection of the I-shaped steel can be enhanced, the welding surface of the I-shaped steel and the H-shaped steel is prevented from being detached due to reverse loading force, and the reverse bearing capacity of the counter-force support mechanism is ensured.
Drawings
FIG. 1 is a schematic structural diagram of a limit bearing capacity detection device of a front-supported grouting steel pipe pile;
FIG. 2 is a schematic side view of a static load testing and analyzing system of a limit bearing capacity detection device of a front-supporting grouting steel pipe pile, without a pile foundation;
shown in the figure:
110. a counterforce supporting mechanism 111, I-shaped steel 112 and a supporting piece;
120. sealing a steel plate;
130. a hydraulic jack 131, a hydraulic pipe;
140. a pile foundation static load test analysis system;
150. displacement detecting means 151, an electric wire;
160. a fixing member;
200. underground continuous wall, 210, H-shaped steel;
300. front-supporting grouting steel pipe piles;
400. and (5) foundation pit ground.
Detailed Description
The invention is described in detail below with reference to the attached drawing figures:
referring to fig. 1 to 2, an embodiment of the present invention provides a method for detecting a limit bearing capacity of a front-supported grouting steel pipe pile, which may include the following steps:
step 501, arranging a reaction force supporting mechanism 110 between adjacent H-shaped steels 210 of the SMW pile construction underground continuous wall 200, wherein the reaction force supporting mechanism 110 comprises an I-shaped steel 111 welded between webs of the adjacent H-shaped steels 210 in an inclined manner, a supporting piece 112 welded between an upper wing plate of the I-shaped steel 111 and the inner surface of a wing plate on one side of the H-shaped steel 210, and a lower wing plate of the I-shaped steel 111 is vertically distributed with a front-supporting grouting steel pipe pile. Wherein the i-beam 111 and the H-beam 210 each comprise two wing plates and a web connected between the wing plates. The SMW construction method is characterized in that a multi-shaft type drilling and digging stirrer is used for drilling and digging to a certain depth on site, cement series reinforcers are sprayed at a drill bit and are repeatedly mixed and stirred with foundation soil, overlapping construction is adopted among construction units, then H-shaped steel or steel plates are inserted into a cement soil mixture body before hardening to serve as stress reinforcement materials until cement is hardened, and a continuous, complete and seamless underground wall body with certain strength and rigidity is formed.
And 502, welding a seal head steel plate 120 at the end part of the front-supported grouting steel pipe pile 300.
Step 503, arranging a hydraulic jack 130 between the end socket steel plate 120 and the counterforce support mechanism 110.
Step 504, the hydraulic jack 130 is connected to the pile foundation static load test analysis system 140, and the output load of the pile foundation static load test analysis system 140 is loaded onto the front-supported grouting steel pipe pile 300 through the lifting of the hydraulic jack 130, so as to detect the limit bearing capacity of the front-supported grouting steel pipe pile 300. Wherein the pile foundation static load test analysis system 140 is a well-known technology. Wherein the hydraulic jack 130 is connected to the pile foundation static load test analysis system 140 through a hydraulic pipeline 131.
Referring to fig. 1, the method for detecting the ultimate bearing capacity of the front-supported grouting steel pipe pile 300 according to the embodiment of the present invention may further include:
and 505, monitoring the limit bearing capacity of the front-support grouting steel pipe pile 300 when monitoring the settlement of the front-support grouting steel pipe pile 300. The settlement amount of the front-prop type grouting steel pipe pile 300 is monitored by the displacement detecting devices 150 provided at both sides of the front-prop type grouting steel pipe pile 300. The displacement detecting device 150 may be a displacement sensor or the like.
Referring to fig. 1, in order to accurately measure the settling amount of the front-supported grouting steel pipe pile 300, in the method for detecting the ultimate bearing capacity of the front-supported grouting steel pipe pile 300 according to the embodiment of the present invention, the displacement detecting device 150 is fixed by the fixing members 160 disposed at both sides of the front-supported grouting steel pipe pile 300. Wherein the fixing member 160 may be a tubular member, an angle iron, etc. inserted into the foundation pit.
Referring to fig. 2, in the method for detecting ultimate bearing capacity of a front-supported grouting steel pipe pile 300 according to an embodiment of the present invention, the rod-shaped member, the plate with a triangular cross section, or the frame with a triangular cross section of the supporting member 112 is used. In which fig. 2 shows a support 112 of a plate body having a triangular cross-section. The two independent pieces can be welded on the H-shaped steel on each side, of course, the two ends of the connecting piece can be correspondingly welded on the H-shaped steel on one side. The plate body with the triangular section can be a triangular steel plate.
Referring to fig. 1 to 2, an embodiment of the present invention further provides a device for detecting a limit bearing capacity of a front-supported grouting steel pipe pile 300, which may include:
the reaction force supporting mechanism 110 is welded between adjacent H-shaped steels 210 of the underground continuous wall 200 constructed by the SMW method pile. Wherein the reaction force supporting mechanism 110 includes:
and the I-shaped steel 111 is obliquely welded between the webs of the adjacent H-shaped steel 210, so that the lower wing plate of the I-shaped steel 111 is vertically distributed with the front support type grouting steel pipe pile 300.
And a support member 112 welded between the upper wing plate of the i-beam 111 and the inner surface of one side wing plate of the H-beam 210.
And the end socket steel plate 120 is welded at the end part of the front support type grouting steel pipe pile 300.
And a hydraulic jack 130 disposed between the head steel plate 120 and the reaction force supporting mechanism 110.
And the pile foundation static load test analysis system 140 is connected with the hydraulic jack 130 and is used for applying an output load to the front-supported grouting steel pipe pile 300 through the lifting of the hydraulic jack 130.
Referring to fig. 2, the relationship between the H-beam 210 and the front-supported grouting steel pipe pile 300 above and below the ground 400 is shown.
Referring to fig. 1, the ultimate bearing capacity detection apparatus of a front-supported grouting steel pipe pile 300 according to an embodiment of the present invention may further include:
and displacement detection devices 150 arranged on both sides of the front-supported grouting steel pipe pile 300. Wherein the displacement detecting means 150 may be a displacement sensor. The displacement control device 150 is connected to the pile foundation static load test analysis system 140 through an electric wire 151.
Referring to fig. 1 to 2, the ultimate bearing capacity detection apparatus of a front-supported grouting steel pipe pile 300 according to an embodiment of the present invention may further include:
and fixtures 160 provided at both sides of the front-supported type grouting steel pipe pile 300 for installing the displacement detecting device 150 on the fixtures 160. The fixing member 160 can ensure accurate measurement of the displacement control device 150.
Referring to fig. 2, in the ultimate bearing capacity detecting apparatus of the front-supported grouting steel pipe pile 300 according to the embodiment of the present invention, the rod-shaped member (not shown), the plate body with a triangular cross section, or the frame body with a triangular cross section (not shown) of the supporting member 112 is provided. The supporting piece of the plate body with the triangular section can be a triangular steel plate.
The ultimate bearing capacity detection device and method of the front-supported grouting steel pipe pile 300 provided by the embodiment of the invention combine the front-supported grouting steel pipe pile 300 of an inclined strut system with the H-shaped steel 210 of the underground continuous wall 200 constructed by the piles in the SMW method, the H-shaped steel 210 of the underground continuous wall 200 constructed by the piles in the SMW method is utilized, the end socket steel is welded at the end part of the front-supported grouting steel pipe pile 300 through the counterforce support mechanism 110 arranged between the adjacent H-shaped steel 210, so that the hydraulic jack 130 connected with the pile foundation static load test analysis system 140 is arranged between the front-supported grouting steel pipe pile 300 and the counterforce support mechanism 110, because the counterforce support mechanism 110 can provide reverse support force for the front-supported grouting steel pipe pile 300 of the inclined strut system, the output load of the pile foundation static load test analysis system 140 is loaded on the front-supported grouting steel pipe pile 300 through the lifting of the hydraulic jack 130, so as to carry out slow loading detection on the ultimate bearing capacity of the front-supporting grouting steel pipe pile 300. The limitation that the reaction force supporting mechanism 110 formed by stacking the counterweight blocks by the stacking method cannot be applied to the front-supported grouting steel pipe pile 300 of the inclined strut system is broken through.
According to the device and the method for detecting the ultimate bearing capacity of the front-support grouting steel pipe pile 300, provided by the embodiment of the invention, the I-shaped steel 111 of the reaction force supporting mechanism 110 is obliquely welded between the webs of the H-shaped steel 210, so that the welding strength of the I-shaped steel 111 can be improved, and the reliable connection between the I-shaped steel 111 and the H-shaped steel 210 is ensured. The supporting piece 112 is welded between the upper wing plate of the I-shaped steel 111 and the wing plate of the H-shaped steel 210, so that the reliable connection of the I-shaped steel 111 can be enhanced, the welding surface of the I-shaped steel 111 and the H-shaped steel 210 is prevented from being detached due to reverse loading force, and the reverse bearing force of the reaction force supporting mechanism 110 is ensured.
The ultimate bearing capacity detection device of the front-support grouting steel pipe pile 300 provided by the embodiment of the invention has the advantages of simple structure and reliable performance, and the I-shaped steel 111 can be welded and manufactured on site, so that the construction is convenient. The reaction supporting mechanism 110 is effectively combined with the pile foundation static load test analysis system 140 to detect the limit bearing capacity of the front-supporting grouting steel pipe pile 300, and the method has the effects of simple detection and real data.
The present invention is not limited to the above-described specific embodiments, and it is apparent that the above-described embodiments are some, not all, of the embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the invention, are within the scope of the invention. Other levels of modification and variation of the present invention may be made by those skilled in the art. Thus, it is intended that the present invention cover the modifications and variations of this invention provided they come within the scope of the appended claims.
Claims (10)
1. A limit bearing capacity detection method of a front-supported grouting steel pipe pile is characterized by comprising the following steps:
the method comprises the following steps that a counter-force supporting mechanism is arranged between adjacent H-shaped steels of the underground diaphragm wall constructed by the SMW pile construction method, the counter-force supporting mechanism comprises an I-shaped steel which is welded between webs of the adjacent H-shaped steels in an inclined mode, a supporting piece which is welded between an upper wing plate of the I-shaped steel and the inner surface of a wing plate on one side of the H-shaped steel, and a lower wing plate of the I-shaped steel is vertically distributed with a front-supporting grouting steel pipe pile;
welding a head steel plate at the end part of the front-supporting grouting steel pipe pile;
a hydraulic jack is arranged between the end socket steel plate and the counter-force supporting mechanism;
and connecting the hydraulic jack to a pile foundation static load test analysis system, and loading the output load of the pile foundation static load test analysis system to the front-supported grouting steel pipe pile through the lifting of the hydraulic jack so as to detect the limit bearing capacity of the front-supported grouting steel pipe pile.
2. The method for detecting the ultimate bearing capacity of the front-supported grouting steel pipe pile according to claim 1, further comprising:
and monitoring the ultimate bearing capacity of the front-supporting grouting steel pipe pile when monitoring the settlement of the front-supporting grouting steel pipe pile.
3. The method for detecting ultimate bearing capacity of a front-supported grouting steel pipe pile according to claim 2, characterized in that the settlement amount of the front-supported grouting steel pipe pile is monitored by displacement detection devices arranged on both sides of the front-supported grouting steel pipe pile.
4. The method for detecting ultimate bearing capacity of a front-supported grouting steel pipe pile according to claim 3, wherein the displacement detecting device is fixedly arranged by fixing members arranged on both sides of the front-supported grouting steel pipe pile.
5. The method for detecting ultimate bearing capacity of a front-supported grouting steel pipe pile according to claim 1, wherein the strut member is a rod member, a plate body having a triangular cross section, or a frame body having a triangular cross section.
6. The method for detecting ultimate bearing capacity of a front-supported grouting steel pipe pile according to claim 5, wherein the support member is a triangular steel plate.
7. The utility model provides a limit bearing capacity detection device of front-supporting slip casting steel-pipe pile which characterized in that includes:
the counter-force supporting mechanism is welded between adjacent H-shaped steel of the underground continuous wall constructed by the SMW construction method pile; the reaction force supporting mechanism includes:
the I-shaped steel is obliquely welded between webs of adjacent H-shaped steel, so that a lower wing plate of the I-shaped steel is vertically distributed with the front-supporting grouting steel pipe pile;
the supporting piece is welded between the upper wing plate of the I-shaped steel and the inner surface of the wing plate on one side of the H-shaped steel;
the end socket steel plate is welded at the end part of the front support type grouting steel pipe pile;
the hydraulic jack is arranged between the end socket steel plate and the counter-force supporting mechanism;
and the pile foundation static load test analysis system is connected with the hydraulic jack and is used for applying an output load to the front-supporting grouting steel pipe pile through the lifting of the hydraulic jack.
8. The ultimate bearing capacity detection device of a front-supported grouting steel pipe pile according to claim 7, further comprising:
and the displacement detection devices are arranged on two sides of the front-supporting grouting steel pipe pile.
9. The ultimate bearing capacity detection device of a front-supported grouting steel pipe pile according to claim 7, further comprising:
and the fixing pieces are arranged on two sides of the front-supporting type grouting steel pipe pile and used for arranging the displacement detection device on the fixing pieces.
10. The ultimate bearing capacity detection apparatus of a front-supported grouting steel pipe pile according to claim 7, wherein the strut member bar, the plate body having a triangular cross section, or the frame body having a triangular cross section.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110352890.2A CN113062373A (en) | 2021-04-01 | 2021-04-01 | Limit bearing capacity detection device and method for front-supported grouting steel pipe pile |
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| CN202110352890.2A CN113062373A (en) | 2021-04-01 | 2021-04-01 | Limit bearing capacity detection device and method for front-supported grouting steel pipe pile |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004271394A (en) * | 2003-03-10 | 2004-09-30 | Railway Technical Res Inst | Apparatus and method for detecting external force of structure |
| CN106245689A (en) * | 2016-08-04 | 2016-12-21 | 上海岩土工程勘察设计研究院有限公司 | A kind of monitoring method mixing materials for support stake axle power |
| CN206189478U (en) * | 2016-10-31 | 2017-05-24 | 武汉科技大学 | Horizontal pile foundation single pile horizontal load test device |
| CN208505594U (en) * | 2018-06-27 | 2019-02-15 | 中铁二局集团有限公司 | A kind of steel pipe column loading test device |
| CN109457708A (en) * | 2018-12-14 | 2019-03-12 | 中冶天工集团有限公司 | The construction method of temporary support in a kind of deep foundation ditch concrete structure construction procedure |
-
2021
- 2021-04-01 CN CN202110352890.2A patent/CN113062373A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004271394A (en) * | 2003-03-10 | 2004-09-30 | Railway Technical Res Inst | Apparatus and method for detecting external force of structure |
| CN106245689A (en) * | 2016-08-04 | 2016-12-21 | 上海岩土工程勘察设计研究院有限公司 | A kind of monitoring method mixing materials for support stake axle power |
| CN206189478U (en) * | 2016-10-31 | 2017-05-24 | 武汉科技大学 | Horizontal pile foundation single pile horizontal load test device |
| CN208505594U (en) * | 2018-06-27 | 2019-02-15 | 中铁二局集团有限公司 | A kind of steel pipe column loading test device |
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Application publication date: 20210702 |
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