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JP2021055510A |
To provide an automatic hole expansion device for soil sampling.An automatic hole expansion device for soil sampling includes a base 10 and a body 60. The body is rotatably provided on a top face of the base, a first storage space 47 is ...
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JP6854011B2 |
To provide a foundation physical property estimation system which can practically accurately estimate foundation physical properties, even when existing data such as boring data is restricted in the periphery of an estimation point and i...
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JP2021050517A |
To provide a simple determination method of ground types easily determining ground types by detecting and analyzing, using a sensor, ground propagation sound generated upon excavation of or insertion to the ground with a tip of an excava...
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JP6842006B1 |
To disclose a sampling device for a soil excavation machine. A sampling box 20 is included, a ring-shaped sampling space 21 is provided in the sampling box, a storage groove 23 communicating with the outside is formed on the upper side o...
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JP6843427B2 |
To realize simplification of the operation for the ground survey by automatization of the extraction of the inflection point in the D-Vrb curve.The surface wave survey analyzer for the ground survey system to exerts the ground survey by ...
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JP6841704B2 |
To provide a method for improving ground which can continuously perform improvement of a necessary portion based on results of liquefaction determination by subsurface exploration.Provided is a method for improving ground for improving g...
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JP2021031863A |
To provide a ground surveying method capable of efficiently determining in terms of safety whether or not the ground is harmful for a building with a specific structure.A ground surveying method of the present invention is a method to su...
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JP6832497B2 |
To provide an estimation method of strength characteristics of soil cement capable of estimating strength characteristics from particle size of the soil, and an estimation device, a quality management method of a foot protection part whe...
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JP6832211B2 |
To provide a ground investigation device capable of largely reducing manhours and cost required for a ground investigation, by continuously executing a liquefaction determination and an evaluation of support performance of the ground by ...
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JP6824503B2 |
To provide a sediment sampling device capable of easily transporting and sampling columnar deposit of sand gravel on a lake bottom and a sea bottom.A sediment sampling device (10) comprises: a cylindrical penetration portion (12) receivi...
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JP6825262B2 |
To provide a foreign matter identification method and a foreign matter identification device which enable the kind of foreign matter present in the ground to be identified with high accuracy by a simple method.The foreign matter identifi...
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JP6815757B2 |
To provide a ground liquefaction evaluation method capable of evaluating liquefaction strength with high accuracy.In a ground liquefaction evaluation method which evaluates liquefaction strength of the ground 1 of an evaluation object, o...
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JP6812234B2 |
To provide a method and device for inspecting a pile hole, capable of obtaining reliable inspection results whether the hole bottom or hole wall of the pile hole has reached a bearing stratum or not.A method for inspecting a pile hole in...
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JP6812232B2 |
To provide a method and device for inspecting the hole wall of a pile hole, capable of obtaining reliable inspection results on whether the hole wall of the pile hole has reached a bearing stratum for securing the bearing capacity of a p...
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JP6812199B2 |
To provide a pile hole bottom inspection method and a pile hole bottom inspection device capable of confirming whether an entire pile hole bottom reaches a support layer.A pile hole bottom inspection method for inspecting whether a pile ...
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JP6812233B2 |
To provide a method and device for inspecting a pile hole, capable of confirming whether the hole bottom or hole wall of the pile hole has reached the bearing stratum or not.A method for inspecting a pile hole inspects whether a hole bot...
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JP6809132B2 |
To examine more accurately highly flowable soil such as floating mud.There is provided an instrument used for examining floating mud. The instrument includes: a region regulation member, which has a cylindrical body having opened upper a...
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JP2020204245A |
To provide a geological inspection sampling device based on environment management.A geological inspection sampling device based on environment management includes a body, in which a handle is fixedly installed on the left end face of th...
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JP6805040B2 |
To provide an original position testing device which can accurately measure a groundwater level and can surely collect a soil sample at a desired position with a simple constitution.An original position testing device 4 for measuring a g...
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JP6805068B2 |
To make it possible to reduce time and cost required in monitoring and repair work of settlement displacement as to a floor using a plurality of independently provided frame-type improved walls.A monitoring method of settlement displacem...
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JP6804739B2 |
To provide an estimating method and an estimating device of soil cement strength characteristics capable of estimating future expression strength early from compounding of soil cement, and a quality control method and a quality control d...
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JP6797721B2 |
To provide a jig for driving a thin wall straight and reliably towards hard but brittle ground.As shown in FIG. 3, this thin wall driving jig J is composed of a steel driving guide 1, a connecting jig 2 and a driving jig 3. When sampling...
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JP6798746B1 |
To provide a dynamic loading simulation device for a pile head and a method thereof. The housing case 1, the disk type loading mechanism 2, the gear group power transmission mechanism 10 and the external support mechanism are included, a...
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JP6793505B2 |
To provide a survey method of a water bottom foundation capable of efficiently surveying the water bottom foundation by a surface wave survey.A survey method of this water bottom foundation is the survey method of the water bottom founda...
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JP2020190117A |
To provide a loading tester that has a simple configuration and can improve the accuracy of test results.A loading tester 1 for obtaining support force properties for a deep ground where the hole bottom of an underground hole 10 is locat...
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JP6792117B1 |
To provide a uniform and reliable improvement evaluation method for the ground by accurately grasping the reachable range of the chemical solution during the construction of the chemical solution improvement work and efficiently evaluati...
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JP6790718B2 |
To help pick up samples of interstitial water from underground easily and efficiently.A water sampling tool for sampling underground interstitial water is equipped with a pump having an inlet and an outlet, a first hollow pipe of which o...
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JP2020176435A |
To provide a drilling head and a drilling device with a configuration that do not require a lot of energy when making excavation abilities function and that can make a cylindrical hole stably and quickly.The drilling head that comprises:...
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JP6777314B2 |
To easily and quickly connect a short rod on site and lengthen a life of use of a rod with little deformation or breakage of a threaded portion due to an axial force in a long rod which can transmit a shaft force and a rotational torque ...
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JP6773949B2 |
To provide a measuring method and a measuring device capable of accurately calculating physical properties of a bentonite mixed soil by means of RI measurement to thereby solve a problem in conventional techniques.Disclosed measuring met...
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JP2020169506A |
To provide a confirmation method of a ground improvement effect capable of predicting an improvement effect at a specific position with high accuracy.A confirmation method of an improvement effect of a ground into which a chemical liquid...
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JP6767700B2 |
To provide an eccentric joint and a ground investigation machine using the same that enable penetration of a penetration body even into a stratum containing gravel.An eccentric joint 13 is used with a penetration body 10 of a ground inve...
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JP2020165115A |
To provide a method of burying a pile body when burying a large number of pile bodies capable of reducing the time when vibrations and noises occur, and a pile body connection jig.The method for burying multiple pile bodies 2 in a ground...
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JP2020159002A |
To provide a soil sampler capable of appropriately pushing a cylindrical (tubular) component in to a prescribed depth and ensuring sampling of soils from the prescribed depth even when foreign objects are mixed and soil hardness is high....
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JP6762257B2 |
To provide a soil measurement method and a soil measurement apparatus capable of reducing the influence on the measurement of the dry density of soil by the proportion of moisture contained in soil while ensuring immediacy.A closed space...
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JP6763678B2 |
To provide a simple soil sampling method for sampling a soil under a part of an underground structure pressurized by groundwater while preventing groundwater from uncontrollably spouting into the underground structure at a low cost, and ...
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JP6763394B2 |
Provided is a technology for soil quality determination that makes it possible to calculate the safety rate of a slope without determining the soil properties of soil to be measured beforehand. A soil quality determination device 110B ac...
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JP6754662B2 |
To provide an apparatus and a method to determine a bearing capacity of foundation at an excavation tip of a concrete pile cast in place in an easy and inexpensive way.A dynamic load test apparatus E comprises: a measuring device 1; a dy...
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JP2020139282A |
To provide a strain measuring device capable of detecting axial strain and rotational strain of a rotating body, a strain measuring method, and a ground information estimation system.A strain of a rotating body (shaft member 10) is measu...
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JP6748566B2 |
To provide a technology capable of properly confirming that the tip of a hole reaches a support layer when forming a hole for inserting a pile such as a steel pipe pile by excavating the ground by striking a drilling tool such as a drill...
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JP2020133259A |
To make it possible to improve complete shape accuracy by improving the position accuracy of a boundary between a ground improvement body and the ground.An improvement body management system is provided that comprises: salt that is added...
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JP6748235B2 |
The invention relates to construction, in particular to methods for strengthening soils under bases and foundations of buildings and structures, including electric power industry facilities.The technical result achieved by this invention...
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JP3227316U |
To provide a sample collecting device for collecting a specimen for measuring the strength of calcia modified soil or the like, which can easily install and pull up a sample collecting tube without an diver. To do. A sampling device 3 is...
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JP6742633B2 |
To provide a test attachment applicable to a columnar ground improvement method.This device comprises: a cylindrical body 20 including a first inside hole 20a along a longitudinal direction; and a head portion 30 exchanged with an auger ...
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JP6737938B1 |
To provide a ground determination method and a ground determination device capable of determining whether or not humus is contained in the ground based on a ground survey of a low-cost house. The step includes a step of conducting a grou...
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JP6735088B2 |
To provide a ground compaction management unit capable of calculating the rigidity of the ground requiring no measuring device to be set on the ground, and a ground compaction management method.A ground compaction management unit 10a inc...
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JP6734116B2 |
To provide an evaluation method and system of trafficability capable of easily and quickly evaluating the trafficability of even a special ground such as a bottom of water and a disaster-stricken site.A correlation between penetration fo...
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JP6731309B2 |
To propose a pile performance evaluation method capable of simply evaluating performance of a pile.A pile performance evaluation method includes acquisition processing S10, estimation processing S12, and evaluation processing S14. The ac...
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JP6721914B2 |
To provide a progress of a soil investigation in real time.A server device 20 comprises: means 23 correlating position data of an investigation land and investigation status data indicating a progress of soil investigation with each othe...
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JP2020101069A |
To provide an evaluation method for foundation capable of estimating ultimate bearing power qt of the foundation from a measurement value by a rotational penetration test.An evaluation method for foundation executes regression analysis i...
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