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BRETBY meeting
58A
RepQrts cyclic in-plane shear fatigue tests of commercially produced gypsum wallboard stripped of its paper covering, to simulate the behaviour of a brittle wall c o v ~ i n g subjected to static and cyclic strsdns.
Comminution of Rocks Cutting 813171 LINEAR ROCK CUTTING RIG TESTs TOOLS IN THE LABORATORY Snowdon, R A; Temporal, J; Hignett, H J Turmlg, VI2, NIl, Dec 1980, PIO-I3 Describes the design and i n s ~ e n t a t i o n of ~ e rig at the Trar~qport and Road Research Laboratory, UE. Disks ard other rotary tools used on full face tunnell~ng machines are being tested on rocks with unlaxial c~npressive strengths up to 190MN/sq m (sandstone, limestone, granite, dolerite ). 813172 LINEAR ROCK CUTTING RIG Snowdon, R A; Temlx~al, J; Hignett, H J Translx~t and Road Research Laberatory supplementary report 588, 1981, 17P The specification, design, conmmlssio~ing and instrumentation of the rig are described. The test system can accommodate single or multiple disc cutter assemblies and will be used to investigate the perfc~mmnce of different cutting tools in a variety of medium and hard rock types. Results of tests on Devon granite are given.
Rock and Soil Improvement Techniques 813173
TENSION RESISTANT INCLUSIONS IN SOILS A**Srswes, K Z; McGow'n, A; Maahour, M M J Geotech Engng Div ASCE, VI06, NGTI2, Dec 1980, P1313-1326 Considers the measurements necessary to identify the behavlour of the component materials in soilinclusion sy,tems and suggests the basis for a general mathematical model to simulate system behaviour. Gives as an exemple the prediction of the behaviour of a model embankment containing a single l%ver of fabric at the embankment-subsoil interface.
Bolts and anchors 813174
DESIGN AND CONSTRUCTION OF GROUND ANCHORS. SECOND EDITION Harms, T H Construction Industry Research ani I=formation Association, relx~rt 65, Oct 1980, 67P Includes a classification of grour~ anchors, calculation of load capacity, stressing and testing, amd consid~ations on the design of anchored structures. There is an extensive bibliography. 65 refs. Avail: CIRIA, 6 Storey's Gate, London, SWIP 3AU, UK
813175 DEVELOPMENTS IN THE CONCEPT OF COMPRESSION TUBE ANCHORS Ivering, J w Ground Engng, V14, N2, March 1981, P31-34 Outlines the concept of compression tube anchorages and reports on recent developments in this technique. The mechanism of bond of an embedded tube subjected to compression and some examples of the industrial application of the anchors are reviewed. Results of some lab tests are given and the design and reliability of the anchors are discussed. 813176 DESIGN ESTIMATION OF THE ULTIMATE LOAD-HOLDING CAPACITY OF GROUND ANCHORS Little John, G S Ground Emg~g, V13, NS, Nov 1980, P25-39 Describes the 4 ma@or types of cement grout injection anchor used in current practice snd gives empirical design methods based on system full scale testing and general field experience. The design rules are discussed in relation to rocks, cohesionless soils and cohesive soils. 46 refs. 813177 ANCHORS HOLD DOWN JEDDAH'S SPORTS CENTRE 'TENT' Ground Eng~g, V13, NS, Nov 1980, P~2-45 Describes the underreamed anchors used to secure the reinforced concrete ground beam to which the cables supporting the roof of this tent-like structure, which covers an area of 8500 sq m, are anchored. 813178 RESIN ANCHORS IN CONCRETE (IN 2 PARTS) Lee I N K; Mayfield, B; snell, C Civ Engng, London, April i~80, F35-41 (Part i), June 1960, P47-53 (Part 2) C~npares test results on working and ultimate behaviour of debonded resin grouted block erded bolts amd fully bonded rebars, and proposes design l~ocedures for estimating the ultimate capacity of single bolts. 813179 ROCK BOLTING TH~ME FOR MRDE/BRETBY MEETING Tunn Ttumnlg, V12, Nll, Dec 1980, P51-53 Reparts a meeting at the Mining Research and Development Establishment, UK, at which the Establishment's work in rock bolting was discussed and 4 papers presented, 2 on UK coal mine experience and 2 on civil engineering projects. 813180 EMBEDDED ANCHOR RESPONSE TO UPLIF~ LOADING Andreadis, A; Harvey, R C; Burley, E J Geotech Emgng Div ASCE, V107, NGT1, Jan
1981, ~ 7 8 Reports model tests on anchors to evaluate the factors which influence soil-anchor interaction, including the extent of soil dlsturbaDme and the influence of pore water pressures during testing, and develops an appropriate failure criterion. 813181 ELASTIC DISPLACEMENTS OF SINGLE AND MULTIPLE UNDERREAM ANCHORS IN A GIBSON SOIL Rowe, R K; Booker, J R Geotechnlque, VS1, N1, March 1981, P125-141 An accurate and economical technique for the analysis of buried footings and multiple unlerream anchors in a nor~homogeneous elastic soil is outlined. The method of analysis may be used for general nonhomogeneous, anisotropic elastic soil
RepQrts cyclic in-plane shear fatigue tests of commercially produced gypsum wallboard stripped of its paper covering, to simulate the behaviour of a brittle wall c o v ~ i n g subjected to static and cyclic strsdns.
Comminution of Rocks Cutting 813171 LINEAR ROCK CUTTING RIG TESTs TOOLS IN THE LABORATORY Snowdon, R A; Temporal, J; Hignett, H J Turmlg, VI2, NIl, Dec 1980, PIO-I3 Describes the design and i n s ~ e n t a t i o n of ~ e rig at the Trar~qport and Road Research Laboratory, UE. Disks ard other rotary tools used on full face tunnell~ng machines are being tested on rocks with unlaxial c~npressive strengths up to 190MN/sq m (sandstone, limestone, granite, dolerite ). 813172 LINEAR ROCK CUTTING RIG Snowdon, R A; Temlx~al, J; Hignett, H J Translx~t and Road Research Laberatory supplementary report 588, 1981, 17P The specification, design, conmmlssio~ing and instrumentation of the rig are described. The test system can accommodate single or multiple disc cutter assemblies and will be used to investigate the perfc~mmnce of different cutting tools in a variety of medium and hard rock types. Results of tests on Devon granite are given.
Rock and Soil Improvement Techniques 813173
TENSION RESISTANT INCLUSIONS IN SOILS A**Srswes, K Z; McGow'n, A; Maahour, M M J Geotech Engng Div ASCE, VI06, NGTI2, Dec 1980, P1313-1326 Considers the measurements necessary to identify the behavlour of the component materials in soilinclusion sy,tems and suggests the basis for a general mathematical model to simulate system behaviour. Gives as an exemple the prediction of the behaviour of a model embankment containing a single l%ver of fabric at the embankment-subsoil interface.
Bolts and anchors 813174
DESIGN AND CONSTRUCTION OF GROUND ANCHORS. SECOND EDITION Harms, T H Construction Industry Research ani I=formation Association, relx~rt 65, Oct 1980, 67P Includes a classification of grour~ anchors, calculation of load capacity, stressing and testing, amd consid~ations on the design of anchored structures. There is an extensive bibliography. 65 refs. Avail: CIRIA, 6 Storey's Gate, London, SWIP 3AU, UK
813175 DEVELOPMENTS IN THE CONCEPT OF COMPRESSION TUBE ANCHORS Ivering, J w Ground Engng, V14, N2, March 1981, P31-34 Outlines the concept of compression tube anchorages and reports on recent developments in this technique. The mechanism of bond of an embedded tube subjected to compression and some examples of the industrial application of the anchors are reviewed. Results of some lab tests are given and the design and reliability of the anchors are discussed. 813176 DESIGN ESTIMATION OF THE ULTIMATE LOAD-HOLDING CAPACITY OF GROUND ANCHORS Little John, G S Ground Emg~g, V13, NS, Nov 1980, P25-39 Describes the 4 ma@or types of cement grout injection anchor used in current practice snd gives empirical design methods based on system full scale testing and general field experience. The design rules are discussed in relation to rocks, cohesionless soils and cohesive soils. 46 refs. 813177 ANCHORS HOLD DOWN JEDDAH'S SPORTS CENTRE 'TENT' Ground Eng~g, V13, NS, Nov 1980, P~2-45 Describes the underreamed anchors used to secure the reinforced concrete ground beam to which the cables supporting the roof of this tent-like structure, which covers an area of 8500 sq m, are anchored. 813178 RESIN ANCHORS IN CONCRETE (IN 2 PARTS) Lee I N K; Mayfield, B; snell, C Civ Engng, London, April i~80, F35-41 (Part i), June 1960, P47-53 (Part 2) C~npares test results on working and ultimate behaviour of debonded resin grouted block erded bolts amd fully bonded rebars, and proposes design l~ocedures for estimating the ultimate capacity of single bolts. 813179 ROCK BOLTING TH~ME FOR MRDE/BRETBY MEETING Tunn Ttumnlg, V12, Nll, Dec 1980, P51-53 Reparts a meeting at the Mining Research and Development Establishment, UK, at which the Establishment's work in rock bolting was discussed and 4 papers presented, 2 on UK coal mine experience and 2 on civil engineering projects. 813180 EMBEDDED ANCHOR RESPONSE TO UPLIF~ LOADING Andreadis, A; Harvey, R C; Burley, E J Geotech Emgng Div ASCE, V107, NGT1, Jan
1981, ~ 7 8 Reports model tests on anchors to evaluate the factors which influence soil-anchor interaction, including the extent of soil dlsturbaDme and the influence of pore water pressures during testing, and develops an appropriate failure criterion. 813181 ELASTIC DISPLACEMENTS OF SINGLE AND MULTIPLE UNDERREAM ANCHORS IN A GIBSON SOIL Rowe, R K; Booker, J R Geotechnlque, VS1, N1, March 1981, P125-141 An accurate and economical technique for the analysis of buried footings and multiple unlerream anchors in a nor~homogeneous elastic soil is outlined. The method of analysis may be used for general nonhomogeneous, anisotropic elastic soil